initial chekin of code received by Ericsson on 20170410
diff --git a/SCCP_CNL113341/src/SCCP_Emulation.ttcn b/SCCP_CNL113341/src/SCCP_Emulation.ttcn
new file mode 100644
index 0000000..5e269cc
--- /dev/null
+++ b/SCCP_CNL113341/src/SCCP_Emulation.ttcn
@@ -0,0 +1,6031 @@
+///////////////////////////////////////////////////////////////////////////////
+//                                                                           //
+// Copyright Test Competence Center (TCC) ETH 2008                           //
+//                                                                           //
+// The copyright to the computer  program(s) herein  is the property of TCC. //
+// The program(s) may be used and/or copied only with the written permission //
+// of TCC or in accordance with  the terms and conditions  stipulated in the //
+// agreement/contract under which the program(s) have been supplied          //
+//                                                                           //
+///////////////////////////////////////////////////////////////////////////////
+//  File:         SCCP_Emulation.ttcn
+//  Description:  SS7 SCCP definitions and dynamic part according to
+//                 specification ITU-T SS7 SCCP, ANSI ..., ttc ...
+//  References:   ITU-T: Recommendation Q.711-Q.714,
+//                ANSI : T1.111-2001 (MTP) and T1.112-2001 (SCCP)
+//                TTC  : JT-Q711
+//  Rev:          R6A05
+//  Prodnr:       CNL 113 341
+//  Updated:      2009-01-26
+//  Contact:      http://ttcn.ericsson.se
+
+module SCCP_Emulation
+{//startmodule
+
+modulepar
+{
+  float   tsp_maxLocalReference := 16777216.0;  //loc ref= 0...tsp_maxLocalReference-1
+  float   tsp_max_ConnectionId  := 16777216.0;  //max connection id = 0..tsp_max_ConnectionId -1
+  integer tsp_force_xudt := 0;
+  integer tsp_SIF_MaxLength := 272
+}
+
+import from General_Types all;
+import from MTP3asp_Types all;
+import from MTP3asp_PortType all;
+import from SCCP_Types  all;
+import from SCCPasp_Types all;
+import from SCCP_Mapping all;
+
+group   SCCPConstants
+{//startgroup SCCPConstants
+
+//------------------------------------------------------------------------------
+// Subsystem Numbers
+//------------------------------------------------------------------------------
+
+const integer cg_SSN_notKnown:=0;
+const integer cg_SSN_sCCPmanagement:=1;
+const integer cg_SSN_reservedForITU:=2;
+const integer cg_SSN_iSUP:=3;
+const integer cg_SSN_oMAP:=4;
+const integer cg_SSN_mAP:=5;
+const integer cg_SSN_hLR:=6;
+const integer cg_SSN_vLR:=7;
+const integer cg_SSN_mSC:=8;
+const integer cg_SSN_eIC:=9;
+const integer cg_SSN_aUC:=10;
+const integer cg_SSN_isdnSS:=11;
+const integer cg_SSN_reservedForIntUse:=12;
+const integer cg_SSN_bISDNe2e:=13;
+const integer cg_SSN_tCtestResponder:=14;
+const integer cg_SSN_rANAP:=142;
+const integer cg_SSN_bSSAP:=254;
+// TCAP has not SSN
+
+//------------------------------------------------------------------------------
+// Routing Indicator values ITU: 3.4.1/Q713.
+//------------------------------------------------------------------------------
+const BIT1n cg_route_on_SSN := '1'B;
+const BIT1n cg_route_on_GT := '0'B;
+
+//------------------------------------------------------------------------------
+// Release Cause
+//------------------------------------------------------------------------------
+
+
+const integer cg_Rel_endUserOrig:=0;
+const integer cg_Rel_endUserCong:=1;
+const integer cg_Rel_endUserFailure:=2;
+const integer cg_Rel_sCCPUserOrig:=3;
+const integer cg_Rel_remProcError:=4;
+const integer cg_Rel_inconsConnData:=5;
+const integer cg_Rel_accessFailure:=6;
+const integer cg_Rel_accessCongestion:=7;
+const integer cg_Rel_subsystFailure:=8;
+const integer cg_Rel_subsystCongest:=9;
+const integer cg_Rel_mTPFailure:=10;
+const integer cg_Rel_networkCongest:=11;
+const integer cg_Rel_expResetTimer:=12;
+const integer cg_Rel_expRecInacTimer:=13;
+const integer cg_Rel_reserved:=14;
+const integer cg_Rel_unqualified:=15;
+const integer cg_Rel_sCCPFailure:=16;
+
+//------------------------------------------------------------------------------
+// Return Cause
+//------------------------------------------------------------------------------
+
+const integer cg_Ret_noTransl4AddrNature:=0;
+const integer cg_Ret_noTransl4SpecifAddr:=1;
+const integer cg_Ret_subsystemCongestion:=2;
+const integer cg_Ret_subsystemFailure:=3;
+const integer cg_Ret_unequippedUser:=4;
+const integer cg_Ret_mTPFailure:=5;
+const integer cg_Ret_networkCongestion:=6;
+const integer cg_Ret_unqualified:=7;
+const integer cg_Ret_errorMessageTransport:=8;
+const integer cg_Ret_errorLocalProcessing:=9;
+const integer cg_Ret_destNoReassembly:=10;
+const integer cg_Ret_sCCPFailure:=11;
+const integer cg_Ret_hopCounterViolation:=12;
+const integer cg_Ret_segmeNotSupported:=13;
+const integer cg_Ret_segmentationFailure:=14;
+
+//------------------------------------------------------------------------------
+// Reset Cause
+//------------------------------------------------------------------------------
+
+
+const integer cg_Res_endUserOrig:=0;
+const integer cg_Res_sCCPUserOrig:=1;
+const integer cg_Res_messOutOfOrder_incPs:=2;
+const integer cg_Res_messOutOfOrder_incPr:=3;
+const integer cg_Res_remProcErr_messOutOfWindow:=4;
+const integer cg_Res_remProcErr_IncPsAfterReinit:=5;
+const integer cg_Res_remProcErr_general:=6;
+const integer cg_Res_remEndUserOperational:=7;
+const integer cg_Res_networkOperational:=8;
+const integer cg_Res_accessOperational:=9;
+const integer cg_Res_networkCongestion:=10;
+const integer cg_Res_reserved:=11;
+const integer cg_Res_unqualified:=12;
+
+//------------------------------------------------------------------------------
+//Error Cause
+//------------------------------------------------------------------------------
+
+const integer cg_Err_unassignedDestinationLRN:=0 ;
+const integer cg_Err_inconsistentSourceLRN:=1 ;
+const integer cg_Err_pointCodeMismatch:=2 ;
+const integer cg_Err_serviceClassMismatch:=3 ;
+const integer cg_Err_unqualified:=4 ;
+
+//------------------------------------------------------------------------------
+//Refusal  Cause
+//------------------------------------------------------------------------------
+
+const integer cg_Ref_endUserOrigin:=0;
+const integer cg_Ref_endUserConges:=1;
+const integer cg_Ref_endUserFailure:=2;
+const integer cg_Ref_sCCPUserOrigin:=3;
+const integer cg_Ref_destAddrUnkn:=4;
+const integer cg_Ref_destInaccess:=5;
+const integer cg_Ref_qOSNotAvail_nonTransient:=6;
+const integer cg_Ref_qOSNotAvail_transient:=7;
+const integer cg_Ref_accessFailure:=8;
+const integer cg_Ref_accessCongestion:=9;
+const integer cg_Ref_subsystemFailure:=10;
+const integer cg_Ref_subsystemCongest:=11;
+const integer cg_Ref_expConnEstTimer:=12;
+const integer cg_Ref_incomUserData:=13;
+const integer cg_Ref_reserved:=14;
+const integer cg_Ref_unqualified:=15;
+const integer cg_Ref_hopCounterViol:=16;
+const integer cg_Ref_sCCPFailure:=17;
+const integer cg_Ref_noTransl4address:=18;
+const integer cg_Ref_unequippedUser:=19;
+
+//------------------------------------------------------------------------------
+// Originator
+//------------------------------------------------------------------------------
+
+const integer cg_Undefined:=0;
+const integer cg_NSU:=1;
+const integer cg_NSP:=2;
+
+
+//------------------------------------------------------------------------------
+// CREF Reason
+//------------------------------------------------------------------------------
+
+const integer cg_CREF_endUserOrig:=0;
+const integer cg_CREF_endUserCong:=1;
+const integer cg_CREF_endUserFailure:=2;
+const integer cg_CREF_SCCPUserOrig:=3;
+const integer cg_CREF_destAddrUnknwn_NT:=4;
+const integer cg_CREF_destInaccg_T:=5;
+const integer cg_CREF_QOSUnavail_NT:=6;
+const integer cg_CREF_QOSUnavail_T:=7;
+const integer cg_CREF_accessFailure:=8;
+const integer cg_CREF_accessCong:=9;
+const integer cg_CREF_destInaccg_NT:=10;
+const integer cg_CREF_subsystCong:=11;
+const integer cg_CREF_unspec_T:=12;
+const integer cg_CREF_incompInfo:=13;
+const integer cg_CREF_unspec_NT:=15;
+const integer cg_CREF_undef:=16;
+const integer cg_CREF_hopCntrViolation:=18;
+
+//------------------------------------------------------------------------------
+// DISC Reason
+//------------------------------------------------------------------------------
+
+const integer cg_DISC_normal:=20;
+const integer cg_DISC_endUserCong:=21;
+const integer cg_DISC_endUserFailure:=22;
+const integer cg_DISC_SCCPUserOrig:=23;
+const integer cg_DISC_abnormal_T:=24;
+const integer cg_DISC_accessFailure:=28;
+const integer cg_DISC_accessCong:=29;
+const integer cg_DISC_abnormal_NT:=30;
+const integer cg_DISC_subsystCong:=31;
+const integer cg_DISC_undef:=32;
+const integer cg_DISC_incompInfo:=33;
+const integer cg_DISC_abnormal:=35;
+
+//------------------------------------------------------------------------------
+// RESET Reason
+//------------------------------------------------------------------------------
+const integer cg_RESET_userSynch:= 40  ;
+const integer cg_RESET_unspec:= 41  ;
+const integer cg_RESET_netCong:= 42  ;
+const integer cg_RESET_undef:= 43  ;
+
+//------------------------------------------------------------------------------
+//Mapping Refusal  Cause to Reason and Originator A.1/Q.713
+//------------------------------------------------------------------------------
+
+const integer cg_Mapping_RefCause_Orig[19]:=
+{
+  cg_NSU,
+  cg_NSU,
+  cg_NSU,
+  cg_NSU,
+  cg_NSP,
+  cg_NSP,
+  cg_NSP,
+  cg_NSP,
+  cg_NSU,
+  cg_NSU,
+  cg_NSP,
+  cg_NSU,
+  cg_NSP,
+  cg_NSU,
+  cg_NSP,
+  cg_Undefined,
+  cg_NSP,
+  cg_NSP,
+  cg_NSP
+};
+
+
+const integer cg_Mapping_RefCause_Reason[19]:=
+{
+  cg_CREF_endUserOrig,
+  cg_CREF_endUserCong,
+  cg_CREF_endUserFailure,
+  cg_CREF_SCCPUserOrig,
+  cg_CREF_destAddrUnknwn_NT,
+  cg_CREF_destInaccg_T,
+  cg_CREF_QOSUnavail_NT,
+  cg_CREF_QOSUnavail_T,
+  cg_CREF_accessFailure,
+  cg_CREF_accessCong,
+  cg_CREF_destInaccg_NT,
+  cg_CREF_subsystCong,
+  cg_CREF_unspec_T,
+  cg_CREF_incompInfo,
+  cg_CREF_unspec_T,
+  cg_CREF_undef,
+  cg_CREF_hopCntrViolation,
+  cg_CREF_destAddrUnknwn_NT,
+  cg_CREF_destInaccg_NT
+};
+
+//------------------------------------------------------------------------------
+//Mapping Release  Cause to Reason and Originator A.2/Q.713
+//------------------------------------------------------------------------------
+
+const integer cg_Mapping_RelCause_Orig[17]:=
+{
+  cg_NSU,
+  cg_NSU,
+  cg_NSU,
+  cg_NSU,
+  cg_NSP,
+  cg_NSP,
+  cg_NSU,
+  cg_NSU,
+  cg_NSP,
+  cg_NSU,
+  cg_NSP,
+  cg_NSP,
+  cg_NSP,
+  cg_NSP,
+  cg_Undefined,
+  cg_Undefined,
+  cg_NSP
+};
+
+//mapping CREF-> ASP_SCCP_N_DISCONNECT_ind:
+//Reason:=cg_Mapping_RefCause_Reason[RefCause];
+//Originator:=cg_Mapping_RefCause_Orig[RefCause];
+
+
+//mapping ASP_SCCP_N_DISCONNECT_req-> CREF:
+//
+
+const integer cg_Mapping_RelCause_Reason[17]:= {
+  cg_DISC_normal,
+  cg_DISC_endUserCong,
+  cg_DISC_endUserFailure,
+  cg_DISC_SCCPUserOrig,
+  cg_DISC_abnormal_T,
+  cg_DISC_abnormal_T,
+  cg_DISC_accessFailure,
+  cg_DISC_accessCong,
+  cg_DISC_abnormal_NT,
+  cg_DISC_subsystCong,
+  cg_DISC_abnormal_NT,
+  cg_DISC_abnormal_T,
+  cg_DISC_abnormal_T,
+  cg_DISC_abnormal_T,
+  cg_DISC_undef,
+  cg_DISC_undef,
+  cg_DISC_abnormal_NT
+};
+
+
+
+//mapping RLSD-> ASP_SCCP_N_DISCONNECT_ind:
+//Reason:=cg_Mapping_RelCause_Reason[RelCause];
+//Originator:=cg_Mapping_RelCause_Orig[RelCause];
+
+//mapping ASP_SCCP_N_DISCONNECT_req-> RLSD:
+//
+
+
+//------------------------------------------------------------------------------
+//Mapping Reset  Cause to Reason and Originator A.2/Q.713
+//------------------------------------------------------------------------------
+
+
+const integer cg_Mapping_ResCause_Orig[12]:= {
+  cg_NSU,
+  cg_NSU,
+  cg_NSP,
+  cg_NSP,
+  cg_NSP,
+  cg_NSP,
+  cg_NSP,
+  cg_NSU,
+  cg_NSP,
+  cg_NSU,
+  cg_NSP,
+  cg_Undefined
+};
+
+
+const integer cg_Mapping_ResCause_Reason[12]:= {
+  cg_RESET_userSynch,
+  cg_RESET_userSynch,
+  cg_RESET_unspec,
+  cg_RESET_unspec,
+  cg_RESET_unspec,
+  cg_RESET_unspec,
+  cg_RESET_unspec,
+  cg_RESET_userSynch,
+  cg_RESET_unspec,
+  cg_RESET_userSynch,
+  cg_RESET_netCong,
+  cg_RESET_undef
+};
+
+//mapping RSR-> ASP_SCCP_N_DISCONNECT_ind:
+//Reason:=cg_Mapping_ResCause_Reason[ResCause];
+//Originator:=cg_Mapping_ResCause_Orig[ResCause];
+
+//mapping ASP_SCCP_N_DISCONNECT_req-> RSR:
+//
+
+const integer cg_TimerArraySize := 16;
+
+}//endgroup SCCPConstants
+
+//******************************************************************************
+// PDU templates
+//******************************************************************************
+
+
+group PDUTemplateDefinitionsSending
+{
+
+
+
+//******************************************************************************
+// Message Connection Request (CR) (Q713 $4.2)
+//******************************************************************************
+
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template           PDU_SCCP_ConnectionRequest t_PDU_SCCP_ConnectionRequest
+(
+          SCCP_param_SourceLocalReference   pl_SLR,
+          SCCP_param_ProtocolClass          pl_Proto_Class,
+          SCCP_param_CPartyAddressEnc       pl_CalledAddress,
+template  SCCP_param_Credit_opt             pl_credit,
+template  SCCP_param_CPartyAddressEnc_opt   pl_CallingAddress  ,
+template  SCCP_param_Data_opt               pl_Data,
+template  SCCP_param_HopCounter_opt         pl_HopCntr,
+template  SCCP_param_Importance_opt         pl_Imp,
+template  SCCP_param_EndOfOptionalParams    pl_eop
+
+):=
+  {
+    messageType:=cr,
+    sourceLocRef:=pl_SLR,
+    protClass:=pl_Proto_Class,
+    pointer1:=2,
+    pointer2:=0,
+    calledPAddress:=pl_CalledAddress,
+    optionalPart:=  {
+      credit:=pl_credit,
+      callingPAddress:=pl_CallingAddress,
+      data:=pl_Data,
+      hopCounter:=pl_HopCntr,
+      importance:=pl_Imp
+    },
+    eop:=pl_eop
+  }
+
+
+
+//******************************************************************************
+// Message Connection Confirm (CC) (Q713 $4.3)
+//******************************************************************************
+
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template          PDU_SCCP_ConnectionConfirm t_PDU_SCCP_ConnectionConfirm
+(
+         SCCP_param_DestLocalReference   pl_DLR,
+         SCCP_param_SourceLocalReference pl_SLR,
+         SCCP_param_ProtocolClass        pl_Proto_Class,
+template SCCP_param_Credit_opt           pl_credit,
+template SCCP_param_CPartyAddressEnc_opt pl_CalledAddress,
+template SCCP_param_Data_opt             pl_Data,
+template SCCP_param_Importance_opt       pl_Imp,
+template SCCP_param_EndOfOptionalParams  pl_eop
+):=
+  {
+    messageType:=cc,
+    destLocRef:=pl_DLR,
+    sourceLocRef:=pl_SLR,
+    protClass:=pl_Proto_Class,
+    pointer1:=1,
+    optionalPart:=  {
+          credit:=pl_credit,
+          calledPAddress:=pl_CalledAddress,
+          data:=pl_Data,
+          importance:=pl_Imp
+    },
+    eop:=pl_eop
+  }
+
+
+//******************************************************************************
+// Message Connection Refused (CREF) (Q713 $4.4)
+//******************************************************************************
+
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template  PDU_SCCP_ConnectionRefused t_PDU_SCCP_ConnectionRefused
+(
+          SCCP_param_DestLocalReference     pl_DLR,
+          SCCP_param_RefusalCause           pl_RefCause,
+template  SCCP_param_CPartyAddressEnc_opt   pl_CalledAddress,
+template  SCCP_param_Data_opt               pl_Data,
+template  SCCP_param_Importance_opt         pl_Imp,
+template  SCCP_param_EndOfOptionalParams     pl_eop
+):=
+  {
+   messageType:=cref,
+   destLocRef:=pl_DLR,
+   refusalCause:=pl_RefCause,
+   pointer1:=1,
+   optionalPart:=  {
+          calledPAddress:=pl_CalledAddress,
+          data:=pl_Data,
+          importance:=pl_Imp
+      },
+   eop:=pl_eop
+  }
+
+
+//******************************************************************************
+// Message Released (RLSD) (Q713 $4.5)
+//******************************************************************************
+
+
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template PDU_SCCP_Released t_PDU_SCCP_Released
+(
+         OCT3 pl_DLR,
+         OCT3 pl_SLR,
+         SCCP_param_ReleaseCause  pl_RelCause,
+template SCCP_param_Data_opt pl_Data,
+template SCCP_param_Importance_opt pl_Imp,
+template SCCP_param_EndOfOptionalParams pl_eop
+):=
+  {
+    messageType:=rlsd,
+    destLocRef:=pl_DLR,
+    sourceLocRef:=pl_SLR,
+    releaseCause:=pl_RelCause,
+    pointer1:=1,
+    optionalPart:=  {
+      data:=pl_Data,
+      importance:=pl_Imp
+    },
+    eop:=pl_eop
+  }
+
+//******************************************************************************
+// Message Release Complete (RLC) (Q713 $4.6)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template PDU_SCCP_ReleaseComplete  t_PDU_SCCP_ReleaseComplete
+(
+         OCT3 pl_DLR,
+         OCT3 pl_SLR
+):=
+  {
+    messageType:=rlc,
+    destLocRef:=pl_DLR,
+    sourceLocRef:=pl_SLR
+  }
+
+
+
+//******************************************************************************
+// Message Data form 1 (DT1) (Q713 $4.7)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template           PDU_SCCP_DataForm1  t_PDU_SCCP_DataForm1
+(
+         OCT3 pl_DLR,
+         SCCP_param_SegmentingReassembl pl_SegmReasm,
+         SCCP_param_Data  pl_Data
+):=
+  {
+    messageType:=dt1,
+    destLocRef:=pl_DLR,
+    segmentingReassembl:=pl_SegmReasm,
+    pointer1:=1,
+    data:=pl_Data
+  }
+
+
+
+//******************************************************************************
+// Message Data form 2 (DT2) (Q713 $4.8)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+//******************************************************************************
+// Message Data Acknowledgement (AK) (Q713 $4.9)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+
+//******************************************************************************
+// Message Unitdata (UDT) (Q713 $4.10)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template          PDU_SCCP_Unitdata t_PDU_SCCP_Unitdata
+(
+  SCCP_param_ProtocolClass      pl_Proto_Class,
+  SCCP_param_CPartyAddressEnc   pl_CalledAddress,
+  SCCP_param_CPartyAddressEnc   pl_CallingAddress,
+  SCCP_param_Data               pl_Data
+):=
+  {
+    messageType :=udt,
+    protClass   :=pl_Proto_Class,
+    pointer1:=3,
+    pointer2:=0,
+    pointer3:=0,
+    calledPAddress  := pl_CalledAddress,
+    callingPAddress := pl_CallingAddress,
+    data:=pl_Data
+  }
+
+
+
+//******************************************************************************
+// Message Unitdata service (UDTS) (Q713 $4.11)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template          PDU_SCCP_UnitdataService  t_PDU_SCCP_UnitdataService
+(
+  SCCP_param_ReturnCause          pl_RetCause,
+  SCCP_param_CPartyAddressEnc     pl_CalledAddress,
+  SCCP_param_CPartyAddressEnc     pl_CallingAddress,
+  SCCP_param_Data                 pl_Data
+):=
+  {
+    messageType:=udts,
+    returnCause:=pl_RetCause,
+    pointer1:=3,
+    pointer2:=0,
+    pointer3:=0,
+    calledPAddress:=pl_CalledAddress,
+    callingPAddress:=pl_CallingAddress,
+    data:=pl_Data
+  }
+
+//******************************************************************************
+// Message Expedited Data (ED) (Q713 $4.12)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+
+//******************************************************************************
+// Message Expedited Data Acknowledgement (EA) (Q713 $4.13)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+//******************************************************************************
+// Message Reset Request (RSR) (Q713 $4.14)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template          PDU_SCCP_ResetRequest t_PDU_SCCP_ResetRequest
+(
+         SCCP_param_DestLocalReference        pl_DLR,
+         SCCP_param_SourceLocalReference      pl_SLR,
+         SCCP_param_ResetCause         pl_ResCause
+):=
+  {
+    messageType:=rsr,
+    destLocRef:=pl_DLR,
+    sourceLocRef:=pl_SLR,
+    resetCause:=pl_ResCause
+  }
+
+
+//******************************************************************************
+// Message Reset Confirmation (RSC) (Q713 $4.15)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+  template  PDU_SCCP_ResetConfirm  t_PDU_SCCP_ResetConfirm
+  (
+    SCCP_param_DestLocalReference        pl_DLR,
+    SCCP_param_SourceLocalReference      pl_SLR
+  ):=
+    {
+      messageType:=rsr,
+      destLocRef:=pl_DLR,
+      sourceLocRef:=pl_SLR
+    }
+
+//******************************************************************************
+// Message Protocol data unit error (ERR) (Q713 $4.16)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template          PDU_SCCP_ProtDataUnitError t_PDU_SCCP_ProtDataUnitError
+(
+         SCCP_param_DestLocalReference        pl_DLR,
+         SCCP_param_ErrorCause                pl_ErrCause
+):=
+  {
+    messageType:=rsr,
+    destLocRef:=pl_DLR,
+    errorCause:=pl_ErrCause
+  }
+
+
+//******************************************************************************
+// Message Inactivity test (IT) (Q713 $4.17)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template          PDU_SCCP_InactivityTest t_PDU_SCCP_InactivityTest
+(
+         SCCP_param_DestLocalReference        pl_DLR,
+         SCCP_param_SourceLocalReference      pl_SLR,
+         SCCP_param_ProtocolClass             pl_Proto_Class,
+         SCCP_param_SequencingSegmenting      pl_SeqSegm,
+         SCCP_param_Credit                    pl_credit
+):=
+  {
+    messageType:=it,
+    destLocRef:=pl_DLR,
+    sourceLocRef:=pl_SLR,
+    protClass:=pl_Proto_Class,
+    sequencingSegmenting:=pl_SeqSegm,
+    credit:=pl_credit
+  }
+
+
+//******************************************************************************
+// Message Extended Unitdata (XUDT) (Q713 $4.18)
+//******************************************************************************
+//------------------------------------------------------------------------------
+
+template          PDU_SCCP_ExtUnitdata t_PDU_SCCP_ExtUnitdata
+(
+            SCCP_param_ProtocolClass            pl_Proto_Class,
+            SCCP_param_HopCounter               pl_hopCounter,
+            SCCP_param_CPartyAddressEnc         pl_calledPAddress,
+            SCCP_param_CPartyAddressEnc         pl_callingPAddress,
+            SCCP_param_Data                     pl_data,
+template    SCCP_param_Segmentation_opt         pl_segm,
+template    SCCP_param_Importance_opt           pl_imp
+):=
+  {
+    messageType:= xudt,
+    protClass:=pl_Proto_Class,
+    hopCounter:=pl_hopCounter,
+    pointer1:=0,
+    pointer2:=0,
+    pointer3:=0,
+    pointer4:=0,
+    calledPAddress:=pl_calledPAddress,
+    callingPAddress:=pl_callingPAddress,
+    data := pl_data,
+    optionalPart:= {
+      segmentation:=pl_segm,
+      importance := pl_imp
+    },
+    eop:= { paramName:=con_SCCP_eop }
+  }
+
+
+//******************************************************************************
+// Message Extended Unitdata Service(XUDTS) (Q713 $4.19)
+//******************************************************************************
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+
+
+//******************************************************************************
+// Message Long Unitdata (LUDT) (Q713 $4.20)
+//******************************************************************************
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+
+//******************************************************************************
+// Message Long Unitdata Service (LUDTS) (Q713 $4.21)
+//******************************************************************************
+
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+
+//******************************************************************************
+// SCCP management messages (Q713 $5.3)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+
+
+}//endgroup PDUTemplateDefinitionsSending
+
+//******************************************************************************
+
+group PDUTemplateDefinitionsReceiving
+{
+
+
+
+//******************************************************************************
+// Message Connection Request (CR) (Q713 $4.2)
+//******************************************************************************
+
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+  template           PDU_SCCP_ConnectionRequest tr_PDU_SCCP_ConnectionRequest:=
+  {
+    messageType:=cr,
+    sourceLocRef:=?,
+    protClass:=?,
+    pointer1:=?,
+    pointer2:=?,
+    calledPAddress:=?,
+    optionalPart:=    {
+      credit:=*,
+      callingPAddress:=*,
+      data:=*,
+      hopCounter:=*,
+      importance:=*
+    },
+    eop:=*
+  }
+
+
+
+//******************************************************************************
+// Message Connection Confirm (CC) (Q713 $4.3)
+//******************************************************************************
+
+
+
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template PDU_SCCP_ConnectionConfirm tr_PDU_SCCP_ConnectionConfirm:=
+{
+  messageType:=cc,
+  destLocRef:=?,
+  sourceLocRef:=?,
+  protClass:=?,
+  pointer1:=?,
+  optionalPart:= {
+    credit:=*,
+    calledPAddress:=*,
+    data:=*,
+    importance:=*
+  },
+  eop:=*
+}
+
+
+//******************************************************************************
+// Message Connection Refused (CREF) (Q713 $4.4)
+//******************************************************************************
+
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template  PDU_SCCP_ConnectionRefused tr_PDU_SCCP_ConnectionRefused:=
+{
+  messageType:=cref,
+  destLocRef:=?,
+  refusalCause:=?,
+  pointer1:=?,
+  optionalPart:=  {
+    calledPAddress:=*,
+    data:=*,
+    importance:=*
+  },
+  eop:=*
+}
+
+
+//******************************************************************************
+// Message Released (RLSD) (Q713 $4.5)
+//******************************************************************************
+
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template  PDU_SCCP_Released tr_PDU_SCCP_Released:=
+{
+  messageType:=rlsd,
+  destLocRef:=?,
+  sourceLocRef:=?,
+  releaseCause:=?,
+  pointer1:=?,
+  optionalPart:=  {
+    data:=*,
+    importance:=*
+    },
+  eop:=*
+}
+
+
+
+//******************************************************************************
+// Message Release Complete (RLC) (Q713 $4.6)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+
+template          PDU_SCCP_ReleaseComplete  tr_PDU_SCCP_ReleaseComplete:=
+{
+  messageType:=rlc,
+  destLocRef:=?,
+  sourceLocRef:=?
+}
+
+
+
+//******************************************************************************
+// Message Data form 1 (DT1) (Q713 $4.7)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+template           PDU_SCCP_DataForm1  tr_PDU_SCCP_DataForm1:=
+{
+  messageType:=dt1,
+  destLocRef:=?,
+  segmentingReassembl:=?,
+  pointer1:=?,
+  data:=?
+}
+
+//******************************************************************************
+// Message Data form 2 (DT2) (Q713 $4.8)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+//******************************************************************************
+// Message Data Acknowledgement (AK) (Q713 $4.9)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+
+//******************************************************************************
+// Message Unitdata (UDT) (Q713 $4.10)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+
+template          PDU_SCCP_Unitdata tr_PDU_SCCP_Unitdata:=
+{
+  messageType:=udt,
+  protClass:=?,
+  pointer1:=?,
+  pointer2:=?,
+  pointer3:=?,
+  calledPAddress:=?,
+  callingPAddress:=?,
+  data:=?
+}
+
+//******************************************************************************
+// Message Unitdata service (UDTS) (Q713 $4.11)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Message definition
+//------------------------------------------------------------------------------
+
+template          PDU_SCCP_UnitdataService  tr_PDU_SCCP_UnitdataService:=
+{
+  messageType:=udts,
+  returnCause:=?,
+  pointer1:=?,
+  pointer2:=?,
+  pointer3:=?,
+  calledPAddress:=?,
+  callingPAddress:=?,
+  data:=?
+}
+
+//******************************************************************************
+// Message Expedited Data (ED) (Q713 $4.12)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+
+//******************************************************************************
+// Message Expedited Data Acknowledgement (EA) (Q713 $4.13)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+//******************************************************************************
+// Message Reset Request (RSR) (Q713 $4.14)
+//******************************************************************************
+
+template          PDU_SCCP_ResetRequest tr_PDU_SCCP_ResetRequest:=
+{
+  messageType:=rsr,
+  destLocRef:=?,
+  sourceLocRef:=?,
+  resetCause:=?
+}
+
+//******************************************************************************
+// Message Reset Confirmation (RSC) (Q713 $4.15)
+//******************************************************************************
+
+template          PDU_SCCP_ResetConfirm  tr_PDU_SCCP_ResetConfirm:=
+{
+  messageType:=rsr,
+  destLocRef:=?,
+  sourceLocRef:=?
+}
+
+//******************************************************************************
+// Message Protocol data unit error (ERR) (Q713 $4.16)
+//******************************************************************************
+
+template          PDU_SCCP_ProtDataUnitError tr_PDU_SCCP_ProtDataUnitError:=
+{
+  messageType:=rsr,
+  destLocRef:=?,
+  errorCause:=?
+}
+
+//******************************************************************************
+// Message Inactivity test (IT) (Q713 $4.17)
+//******************************************************************************
+
+template          PDU_SCCP_InactivityTest tr_PDU_SCCP_InactivityTest:=
+{
+  messageType:=it,
+  destLocRef:=?,
+  sourceLocRef:=?,
+  protClass:=?,
+  sequencingSegmenting:=?,
+  credit:=?
+}
+
+//******************************************************************************
+// Message Extended Unitdata (XUDT) (Q713 $4.18)
+//******************************************************************************
+
+
+template          PDU_SCCP_ExtUnitdata tr_PDU_SCCP_ExtUnitdata :=
+{
+  messageType:=xudt,
+  protClass:= ?, //connection oriented but no flow control
+  hopCounter:=?,
+  pointer1:=?,
+  pointer2:=?,
+  pointer3:=?,
+  pointer4:=?,
+  calledPAddress:=?,
+  callingPAddress:=?,
+  data := ?,
+  optionalPart:= {
+    segmentation:=*,
+    importance := *
+  },
+  eop:= *
+}
+
+//------------------------------------------------------------------------------
+
+//******************************************************************************
+// Message Extended Unitdata Service(XUDTS) (Q713 $4.19)
+//******************************************************************************
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+//******************************************************************************
+// Message Long Unitdata (LUDT) (Q713 $4.20)
+//******************************************************************************
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+
+//******************************************************************************
+// Message Long Unitdata Service (LUDTS) (Q713 $4.21)
+//******************************************************************************
+
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+
+//******************************************************************************
+// SCCP management messages (Q713 $5.3)
+//******************************************************************************
+//------------------------------------------------------------------------------
+// Not supported
+//------------------------------------------------------------------------------
+
+
+
+}//endgroup PDUTemplateDefinitionsReceiving
+
+type record of boolean Timer_Snapshot;
+type enumerated TimerIdentifierType {conn_est, ias, iar, rel, repeat_rel, int, reset,internal_reset, t_guard};
+
+
+type component SCCP_CT
+{ //startcomponent  SCCP_CT
+
+  //Component variables
+  //***************************************************************
+  // Connection Oriented Signalling:
+  // StateTransition-> ConnectionData;
+  var ConnectionData ConnectionTable[16]; //16 connections 0 to 15
+  var integer   v_session; // actual conn. oriented session index
+
+  // Connectioenless Signalling:
+  //== sending ==
+  var OCT3  segmLocRefTable[16];
+  var integer v_segmLocRefIndex; // last index in segmLocRefTable, cyclical incremented
+  //==receiving==
+  var ClessRcvBuff ClessRcvBuffTable[16];
+
+  var integer    v_reference; // not used ???
+
+  var hexstring v_own_GT;
+  var hexstring v_remote_GT;
+  var integer   v_SSN;
+  var OCT1        v_SIO;
+  var integer     v_NI; //network indicator, if NI<2 => international
+  var integer     v_own_SPC;
+  var integer     v_remote_SPC;
+  var integer     v_SLS;
+
+  var SCCP_ServiceType v_SCCPServiceType; //enum: itu, ansi, ttc or mpt
+  //var v_maxLocalReference; // Local Reference max. value, see in SCCP.ttcn
+  var integer     v_PC_length; //length of point code, calculated at start! NOT USED
+  var integer     v_RoutingLabelLen; //in bytes
+  var integer     v_sccp_data_maxlen; // dt1 payload length upper limit
+  var integer     v_sccp_pdu_maxlen;  // SIF len -routing label len
+  
+  var Timer_Snapshot v_T_conn_est;
+  var Timer_Snapshot v_T_ias;
+  var Timer_Snapshot v_T_iar;
+  var Timer_Snapshot v_T_rel;  
+  var Timer_Snapshot v_T_repeat_rel;  
+  var Timer_Snapshot v_T_int;  
+  var Timer_Snapshot v_T_reset;    
+  var Timer_Snapshot v_T_internal_reset;    
+  var Timer_Snapshot v_T_guard;  
+  //var Timer_Snapshot v_T_T_guard;    
+  //***************************************************************
+
+  port SCCPasp_SP_PT   SCCP_SP_PORT;//port type defined in SCCP_ASPs
+  port MTP3asp_SCCP_PT MTP3_SCCP_PORT;
+
+  //component timers
+
+  timer T_conn_est[cg_TimerArraySize]:= { tspc_timer_T_conn_est,tspc_timer_T_conn_est,
+    tspc_timer_T_conn_est,tspc_timer_T_conn_est,
+    tspc_timer_T_conn_est,tspc_timer_T_conn_est,
+    tspc_timer_T_conn_est,tspc_timer_T_conn_est,
+    tspc_timer_T_conn_est,tspc_timer_T_conn_est,
+    tspc_timer_T_conn_est,tspc_timer_T_conn_est,
+    tspc_timer_T_conn_est,tspc_timer_T_conn_est,
+    tspc_timer_T_conn_est,tspc_timer_T_conn_est };
+
+  timer T_ias[cg_TimerArraySize]:=   { tspc_timer_T_ias,tspc_timer_T_ias,
+    tspc_timer_T_ias,tspc_timer_T_ias,
+    tspc_timer_T_ias,tspc_timer_T_ias,
+    tspc_timer_T_ias,tspc_timer_T_ias,
+    tspc_timer_T_ias,tspc_timer_T_ias,
+    tspc_timer_T_ias,tspc_timer_T_ias,
+    tspc_timer_T_ias,tspc_timer_T_ias,
+    tspc_timer_T_ias,tspc_timer_T_ias };
+
+  timer T_iar[cg_TimerArraySize]:= { tspc_timer_T_iar,tspc_timer_T_iar,
+    tspc_timer_T_iar,tspc_timer_T_iar,
+    tspc_timer_T_iar,tspc_timer_T_iar,
+    tspc_timer_T_iar,tspc_timer_T_iar,
+    tspc_timer_T_iar,tspc_timer_T_iar,
+    tspc_timer_T_iar,tspc_timer_T_iar,
+    tspc_timer_T_iar,tspc_timer_T_iar,
+    tspc_timer_T_iar,tspc_timer_T_iar };
+
+  timer T_rel[cg_TimerArraySize]:= { tspc_timer_T_rel,tspc_timer_T_rel,
+    tspc_timer_T_rel,tspc_timer_T_rel,
+    tspc_timer_T_rel,tspc_timer_T_rel,
+    tspc_timer_T_rel,tspc_timer_T_rel,
+    tspc_timer_T_rel,tspc_timer_T_rel,
+    tspc_timer_T_rel,tspc_timer_T_rel,
+    tspc_timer_T_rel,tspc_timer_T_rel,
+    tspc_timer_T_rel,tspc_timer_T_rel };
+
+  timer T_repeat_rel[cg_TimerArraySize]:= { tspc_timer_T_repeat_rel,tspc_timer_T_repeat_rel,
+    tspc_timer_T_repeat_rel,tspc_timer_T_repeat_rel,
+    tspc_timer_T_repeat_rel,tspc_timer_T_repeat_rel,
+    tspc_timer_T_repeat_rel,tspc_timer_T_repeat_rel,
+    tspc_timer_T_repeat_rel,tspc_timer_T_repeat_rel,
+    tspc_timer_T_repeat_rel,tspc_timer_T_repeat_rel,
+    tspc_timer_T_repeat_rel,tspc_timer_T_repeat_rel,
+    tspc_timer_T_repeat_rel,tspc_timer_T_repeat_rel };
+
+  timer T_int[cg_TimerArraySize]:= { tspc_timer_T_int,tspc_timer_T_int,
+    tspc_timer_T_int,tspc_timer_T_int,
+    tspc_timer_T_int,tspc_timer_T_int,
+    tspc_timer_T_int,tspc_timer_T_int,
+    tspc_timer_T_int,tspc_timer_T_int,
+    tspc_timer_T_int,tspc_timer_T_int,
+    tspc_timer_T_int,tspc_timer_T_int,
+    tspc_timer_T_int,tspc_timer_T_int };
+
+
+/*  timer T_T_guard[cg_TimerArraySize]:= { tspc_timer_T_guard,tspc_timer_T_guard,
+    tspc_timer_T_guard,tspc_timer_T_guard,
+    tspc_timer_T_guard,tspc_timer_T_guard,
+    tspc_timer_T_guard,tspc_timer_T_guard,
+    tspc_timer_T_guard,tspc_timer_T_guard,
+    tspc_timer_T_guard,tspc_timer_T_guard,
+    tspc_timer_T_guard,tspc_timer_T_guard,
+    tspc_timer_T_guard,tspc_timer_T_guard };
+*/    
+
+  timer T_reset[cg_TimerArraySize]:= { tspc_timer_T_reset,tspc_timer_T_reset,
+    tspc_timer_T_reset,tspc_timer_T_reset,
+    tspc_timer_T_reset,tspc_timer_T_reset,
+    tspc_timer_T_reset,tspc_timer_T_reset,
+    tspc_timer_T_reset,tspc_timer_T_reset,
+    tspc_timer_T_reset,tspc_timer_T_reset,
+    tspc_timer_T_reset,tspc_timer_T_reset,
+    tspc_timer_T_reset,tspc_timer_T_reset };
+
+
+  timer T_internal_reset[cg_TimerArraySize]:= { tspc_timer_T_internal_reset,tspc_timer_T_internal_reset,
+    tspc_timer_T_internal_reset,tspc_timer_T_internal_reset,
+    tspc_timer_T_internal_reset,tspc_timer_T_internal_reset,
+    tspc_timer_T_internal_reset,tspc_timer_T_internal_reset,
+    tspc_timer_T_internal_reset,tspc_timer_T_internal_reset,
+    tspc_timer_T_internal_reset,tspc_timer_T_internal_reset,
+    tspc_timer_T_internal_reset,tspc_timer_T_internal_reset,
+    tspc_timer_T_internal_reset,tspc_timer_T_internal_reset };
+
+
+  timer T_guard[cg_TimerArraySize]:= { tspc_timer_guard,tspc_timer_guard,
+    tspc_timer_guard,tspc_timer_guard,
+    tspc_timer_guard,tspc_timer_guard,
+    tspc_timer_guard,tspc_timer_guard,
+    tspc_timer_guard,tspc_timer_guard,
+    tspc_timer_guard,tspc_timer_guard,
+    tspc_timer_guard,tspc_timer_guard,
+    tspc_timer_guard,tspc_timer_guard };
+
+}//endcomponent  SCCP_CT
+
+
+group SCCPFunctions
+{//startgroup SCCPFunctions
+  //******************************************************************
+  function f_StartTimer(TimerIdentifierType pl_TimerIdentifier,integer pl_TimerIndex,float pl_duration := -1.0) runs on SCCP_CT 
+  //******************************************************************
+  {
+  select (pl_TimerIdentifier)
+    {
+      case(conn_est)
+       {
+         if(pl_duration < 0.0){
+           T_conn_est[pl_TimerIndex].start;
+           v_T_conn_est[pl_TimerIndex] := true;           
+           }
+         else{
+           T_conn_est[pl_TimerIndex].start(pl_duration);   
+           v_T_conn_est[pl_TimerIndex] := true;                         
+         }            
+       }
+      case(ias)
+       {
+        if(pl_duration < 0.0){             
+          T_ias[pl_TimerIndex].start;
+          v_T_ias[pl_TimerIndex] := true;
+          }
+        else{   
+          T_ias[pl_TimerIndex].start(pl_duration);
+          v_T_ias[pl_TimerIndex] := true;          
+         }         
+       }          
+      case(iar)
+       {  
+        if(pl_duration  < 0.0){                  
+          T_iar[pl_TimerIndex].start;
+          v_T_iar[pl_TimerIndex] := true; 
+         }
+        else{  
+          T_iar[pl_TimerIndex].start(pl_duration);
+          v_T_iar[pl_TimerIndex] := true;                    
+         } 
+       }               
+      case(rel) 
+       {  
+        if(pl_duration  < 0.0){                         
+          T_rel[pl_TimerIndex].start;
+          v_T_rel[pl_TimerIndex] := true;  
+          }
+        else{  
+          T_rel[pl_TimerIndex].start(pl_duration);
+          v_T_rel[pl_TimerIndex] := true;                      
+        }              
+       }          
+      case(repeat_rel)
+       {  
+        if(pl_duration  < 0.0){                
+          T_repeat_rel[pl_TimerIndex].start;
+          v_T_repeat_rel[pl_TimerIndex] := true;   
+        }  
+        else{            
+          T_repeat_rel[pl_TimerIndex].start(pl_duration);
+          v_T_repeat_rel[pl_TimerIndex] := true;                     
+        }   
+       }            
+      case(int)  
+       { 
+        if(pl_duration  < 0.0){                
+          T_int[pl_TimerIndex].start;
+          v_T_int[pl_TimerIndex] := true;
+        }
+        else{    
+          T_int[pl_TimerIndex].start(pl_duration);
+          v_T_int[pl_TimerIndex] := true;        
+         }    
+        }            
+      case(reset)
+       { 
+        if(pl_duration  < 0.0){                   
+          T_reset[pl_TimerIndex].start;
+          v_T_reset[pl_TimerIndex] := true; 
+        }
+        else{ 
+          T_reset[pl_TimerIndex].start(pl_duration);
+          v_T_reset[pl_TimerIndex] := true;         
+        }                      
+       }            
+      case(internal_reset) 
+       { 
+        if(pl_duration  < 0.0){                    
+          T_internal_reset[pl_TimerIndex].start;
+          v_T_internal_reset[pl_TimerIndex] := true;  
+        }
+        else{ 
+          T_internal_reset[pl_TimerIndex].start(pl_duration);
+          v_T_internal_reset[pl_TimerIndex] := true;                 
+        }
+       }                 
+      case(t_guard)
+       {
+        if(pl_duration  < 0.0){                     
+          T_guard[pl_TimerIndex].start;
+          v_T_guard[pl_TimerIndex] := true;  
+        }  
+        else{
+          T_guard[pl_TimerIndex].start(pl_duration);
+          v_T_guard[pl_TimerIndex] := true;                      
+        }  
+       }                       
+      case else
+     {log("Warning: Incorrect Timer!")}              
+    }      
+  }
+  //******************************************************************
+  function f_StopTimer(TimerIdentifierType pl_TimerIdentifier,integer pl_TimerIndex) runs on SCCP_CT
+  //******************************************************************
+  {
+  select (pl_TimerIdentifier)
+    {
+      case(conn_est)
+       {
+          T_conn_est[pl_TimerIndex].stop;
+          v_T_conn_est[pl_TimerIndex] := false;
+       }
+      case(ias)
+       {      
+          T_ias[pl_TimerIndex].stop;
+          v_T_ias[pl_TimerIndex] := false;
+       }          
+      case(iar)
+       {      
+          T_iar[pl_TimerIndex].stop;
+          v_T_iar[pl_TimerIndex] := false; 
+       }               
+      case(rel) 
+       {        
+          T_rel[pl_TimerIndex].stop;
+          v_T_rel[pl_TimerIndex] := false;    
+       }          
+      case(repeat_rel)
+       {      
+          T_repeat_rel[pl_TimerIndex].stop;
+          v_T_repeat_rel[pl_TimerIndex] := false;   
+        }            
+      case(int)  
+       {       
+          T_int[pl_TimerIndex].stop;
+          v_T_int[pl_TimerIndex] := false;   
+        }            
+      case(reset)
+       {      
+          T_reset[pl_TimerIndex].stop;
+          v_T_reset[pl_TimerIndex] := false;  
+       }            
+      case(internal_reset) 
+       {       
+          T_internal_reset[pl_TimerIndex].stop;
+          v_T_internal_reset[pl_TimerIndex] := false;  
+       }                 
+      case(t_guard)
+       {        
+          T_guard[pl_TimerIndex].stop;
+          v_T_guard[pl_TimerIndex] := false;  
+       }                  
+      case else
+     {log("Warning: Incorrect Timer!")}              
+    }      
+  }
+  
+  //******************************************************************  
+  function f_initialize_timer_states() runs on SCCP_CT
+  //******************************************************************  
+  {  
+    var integer i;
+    for (i:=0; i<cg_TimerArraySize;i:=i+1) {  
+      v_T_conn_est[i] := false;
+      v_T_ias[i] := false;
+      v_T_iar[i] := false;
+      v_T_rel[i] := false;
+      v_T_repeat_rel[i] := false;
+      v_T_int[i] := false;
+      v_T_reset[i] := false;
+      v_T_internal_reset[i] := false;
+      v_T_guard[i] :=  false;      
+    }
+  }
+
+  //******************************************************************
+  function SCCPStart(MSC_SCCP_MTP3_parameters pl_Boot) runs on SCCP_CT
+  //******************************************************************
+  {
+    //local declarations
+    var integer vl_j;
+
+    //initializes variables  with 'SCCP_CT' visibility/scope
+    v_segmLocRefIndex := 0;
+    v_reference:=0;
+    v_SIO:= bit2oct(pl_Boot.sio.ni & pl_Boot.sio.prio & pl_Boot.sio.si);
+    v_NI := oct2int(v_SIO)/64;
+    v_own_SPC:=pl_Boot.opc;
+    v_remote_SPC:=pl_Boot.dpc;
+    v_SLS:=pl_Boot.sls;
+    v_SCCPServiceType := pl_Boot.sccp_serviceType;
+
+    if (ispresent(pl_Boot.ssn))
+    {
+      v_SSN:=pl_Boot.ssn;
+    }
+    else
+    {
+      v_SSN:=0;
+    }
+    if( (v_SCCPServiceType == mtp3_itu) or
+        (v_SCCPServiceType == mtp3b_itu) )
+    {
+       v_RoutingLabelLen  := 4;
+    }
+    else if( (v_SCCPServiceType == mtp3_ansi) or
+             (v_SCCPServiceType == mtp3b_ansi) )
+    {
+      v_RoutingLabelLen := 7;
+    }
+    else if (  (v_SCCPServiceType == mtp3_ttc) or
+                (v_SCCPServiceType == mtp3b_ttc)  )
+    {
+      if(v_NI>= 2) { v_RoutingLabelLen := 5;  }
+      else { v_RoutingLabelLen := 4;   }
+    }
+    else if( v_SCCPServiceType == m3ua )
+    {
+      v_RoutingLabelLen := 4; // not really...
+      //v_sccp_data_maxlen := 261;
+    }
+    else if (  (v_SCCPServiceType == mtp3_mpt))
+    {
+      if(v_NI== 2) { v_RoutingLabelLen := 7;  }
+      else { v_RoutingLabelLen := 4;   }
+    }
+    else
+    {
+      log( "Wrong SCCPServiceType value was selected in the config file");
+      log("Modified for default value 'mtp3_itu'.");
+      v_SCCPServiceType := mtp3_itu;
+      v_RoutingLabelLen := 4; //itu
+
+    }
+
+    // mtp3_itu_b i.e. itu mtp3b
+    // SCCP_ansi_b i.e ansi mtp3b settings ???
+    //272= max length of SIF, see Fig3-3B/T1.111.4-2001
+    //temp for test: 10 ?
+    //tsp_SIF_MaxLength = 272
+    v_sccp_pdu_maxlen  := tsp_SIF_MaxLength - v_RoutingLabelLen; // -; //7: msg_type+locref+ptr+len
+    log("v_sccp_pdu_maxlen:",v_sccp_pdu_maxlen);
+    v_sccp_data_maxlen := v_sccp_pdu_maxlen-7; // dt1 payload // -7: msg_type+locref+ptr+len
+
+    for (vl_j:=0;vl_j<16;vl_j:=vl_j+1)
+    {
+      ConnectionTable[vl_j].localReference :='000000'O;
+      ConnectionTable[vl_j].remoteReference:='000000'O;
+      ConnectionTable[vl_j].state          :=idle;
+      ConnectionTable[vl_j].connectionId   :=0;
+      ConnectionTable[vl_j].reassembler_buffer.buffer :=''O;
+      ConnectionTable[vl_j].reassembler_buffer.actlen := 0;
+      ConnectionTable[vl_j].reassembler_buffer.maxlen := 16*v_sccp_data_maxlen; //????
+      segmLocRefTable[vl_j] := '000000'O;
+      reallocate_ClessRcvBuff(vl_j);
+
+    }//endfor
+
+    //starts SCCP execution
+    ScanEvents();
+  }//endfunction of SCCPStart
+
+
+  //******************************************************************
+  function ReleaseResources(in integer pl_session) runs on SCCP_CT
+  //******************************************************************
+  {//startfunction
+
+    //release resources
+    ConnectionTable[pl_session].remoteReference:='000000'O;
+    ConnectionTable[pl_session].localReference:='000000'O;
+    ConnectionTable[pl_session].connectionId:=0;
+    Stop_sessionTimers(pl_session);
+    ConnectionTable[pl_session].state:=idle;
+    ConnectionTable[pl_session].reassembler_buffer.buffer:=''O;
+    ConnectionTable[pl_session].reassembler_buffer.actlen:=0;
+  }//endfunction ReleaseResources
+
+  //******************************************************************
+  function GuardTimer_Expired(in integer pl_session) runs on SCCP_CT
+  //no answer to ASP_SCCP_N_CONNECT_ind received
+  //******************************************************************
+  {//startfunction
+
+    //local declarations
+    var   PDU_SCCP                 vl_PDU_SCCP;
+
+    //Action Table follows
+
+    if (ConnectionTable[pl_session].state==connection_pending_IC)
+    {//startif
+
+      //send Released-this should disconnect the other end
+      vl_PDU_SCCP.released.messageType:=rlsd;
+      vl_PDU_SCCP.released.destLocRef:=ConnectionTable[pl_session].remoteReference;
+      vl_PDU_SCCP.released.sourceLocRef:=ConnectionTable[pl_session].localReference;
+      vl_PDU_SCCP.released.releaseCause:=cg_Rel_endUserOrig;
+      vl_PDU_SCCP.released.pointer1:=0;
+      vl_PDU_SCCP.released.optionalPart:=omit;
+      vl_PDU_SCCP.released.eop:=omit;
+
+      MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Released
+
+      //release resources, return to idle
+      ReleaseResources(pl_session);
+
+    }//endif
+
+  }//endfunction GuardTimer_Expired
+
+
+  //******************************************************************
+  function InternalResetTimer_Expired(integer pl_session) runs on SCCP_CT
+  //******************************************************************
+  {//startfunction
+
+    //local declarations
+    var   PDU_SCCP  vl_PDU_SCCP;
+    var   ASP_SCCP_N_RESET_ind       vl_N_RESET_ind;
+
+    //Action Table follows
+
+    if (ConnectionTable[pl_session].state==active)
+    {//startif
+      //send ASP_SCCP_N_RESET_ind
+      //assemble ASP_SCCP_N_ASP
+      vl_N_RESET_ind.originator:=cg_NSP;
+      vl_N_RESET_ind.reason:=cg_DISC_abnormal_T;
+      vl_N_RESET_ind.connectionId:=ConnectionTable[pl_session].connectionId;
+
+      SCCP_SP_PORT.send( t_ASP_N_RESET_ind(
+        vl_N_RESET_ind.originator,
+        vl_N_RESET_ind.reason,
+        vl_N_RESET_ind.connectionId
+        ));//send ASP_SCCP_N_RESET_ind
+        //send Reset Request
+
+      vl_PDU_SCCP.resetreq.messageType:=rsr;
+      vl_PDU_SCCP.resetreq.destLocRef:=ConnectionTable[pl_session].remoteReference;
+      vl_PDU_SCCP.resetreq.sourceLocRef:=ConnectionTable[pl_session].localReference;
+      vl_PDU_SCCP.resetreq.resetCause:=cg_Res_endUserOrig;
+
+      MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Reset Request
+
+      //start reset timer
+
+      f_StartTimer(reset,pl_session);
+      //restart send inactivity timer
+      f_StopTimer(ias,pl_session);//to avoid warnings
+      f_StartTimer(ias,pl_session);
+      //reset variables etc.
+      //change state
+      ConnectionTable[pl_session].state:=reset_bothway;
+
+    }//endif
+  }//InternalResetTimer_Expired
+
+  //******************************************************************
+  function Reset_Timer_Expired(integer pl_session) runs on SCCP_CT
+  //******************************************************************
+  {//startfunction
+
+    //local declarations
+    var   ASP_SCCP_N_DISCONNECT_ind vl_N_DISCONNECT_ind;
+
+    //Action Table follows
+    if (ConnectionTable[pl_session].state==reset_bothway)
+    {//startif
+
+      //assemble ASP_SCCP_N_
+      vl_N_DISCONNECT_ind.originator:=cg_NSP;
+      vl_N_DISCONNECT_ind.reason:=cg_DISC_abnormal_T;
+      vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[pl_session].connectionId;
+
+      SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+        vl_N_DISCONNECT_ind.originator,
+        omit,
+        vl_N_DISCONNECT_ind.reason,
+        omit,
+        vl_N_DISCONNECT_ind.connectionId,
+        omit
+      ));//send ASP_SCCP_N_DISCONNECT_ind
+
+      //release resources, stop inactivity timers, change state to idle
+      ReleaseResources(pl_session);
+    }//endif
+
+  }//Reset_Timer_Expired
+
+  //******************************************************************
+  function Interval_Timer_Expired(integer pl_session) runs on SCCP_CT
+  //******************************************************************
+  {//startfunction
+
+    //Action Table follows
+    if (ConnectionTable[pl_session].state==disconnect_pending)
+    {
+      log ("Interval timer expired");
+      //release resources
+      ReleaseResources(pl_session);
+    }
+
+  }//Interval_Timer_Expired
+
+
+
+  //******************************************************************
+  function RepeatRelease_Timer_Expired(integer pl_session) runs on SCCP_CT
+  //******************************************************************
+  {
+
+    //local declarations
+    var   PDU_SCCP  vl_PDU_SCCP;
+
+    //Action Table follows
+    if (ConnectionTable[pl_session].state==disconnect_pending)
+    {
+      //assemble and route MTP3_ASP
+      vl_PDU_SCCP.released.messageType:=rlsd;
+      vl_PDU_SCCP.released.destLocRef:=ConnectionTable[pl_session].remoteReference;
+      vl_PDU_SCCP.released.sourceLocRef:=ConnectionTable[pl_session].localReference;
+      vl_PDU_SCCP.released.releaseCause:=cg_Res_endUserOrig;
+      vl_PDU_SCCP.released.pointer1:=0;
+      vl_PDU_SCCP.released.optionalPart:=omit;
+      vl_PDU_SCCP.released.eop:=omit;
+
+      MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Released
+
+      //restart repeat release timer
+      f_StopTimer(repeat_rel,pl_session);//to avoid warnings
+      f_StartTimer(repeat_rel,pl_session);
+      //no state change, return
+    }
+
+  }//RepeatRelease_Timer_Expired
+
+
+  //******************************************************************
+  function Release_Timer_Expired(integer pl_session) runs on SCCP_CT
+  //******************************************************************
+  {
+
+    //local declarations
+    var   PDU_SCCP  vl_PDU_SCCP;
+
+    //Action Table follows
+    if (ConnectionTable[pl_session].state==disconnect_pending)
+    {
+      //assemble and route MTP3_ASP
+      vl_PDU_SCCP.released.messageType:=rlsd;
+      vl_PDU_SCCP.released.destLocRef:=ConnectionTable[pl_session].remoteReference;
+      vl_PDU_SCCP.released.sourceLocRef:=ConnectionTable[pl_session].localReference;
+      vl_PDU_SCCP.released.releaseCause:=cg_Res_endUserOrig;//?
+      vl_PDU_SCCP.released.pointer1:=0;
+      vl_PDU_SCCP.released.optionalPart:=omit;
+      vl_PDU_SCCP.released.eop:=omit;
+
+      MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Released
+
+      f_StartTimer(repeat_rel,pl_session);
+      f_StartTimer(int,pl_session);
+      //no state change, return
+
+    }//endif
+
+  }//Release_Timer_Expired
+
+
+  //******************************************************************
+  function ReceiveInactivity_Timer_Expired(integer pl_session) runs on SCCP_CT
+  //******************************************************************
+  {
+    //local declarations
+    var   PDU_SCCP                   vl_PDU_SCCP;
+    var   ASP_SCCP_N_DISCONNECT_ind  vl_N_DISCONNECT_ind;
+
+    //Action Table follows
+    if (ConnectionTable[pl_session].state==idle){}
+    else if (ConnectionTable[pl_session].state==active)
+    {
+      //assemble ASP_SCCP_N_
+      vl_N_DISCONNECT_ind.originator:=cg_NSP;
+      vl_N_DISCONNECT_ind.reason:=cg_DISC_endUserFailure;//?
+      vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[pl_session].connectionId;
+
+      SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+         vl_N_DISCONNECT_ind.originator,
+         omit,
+         vl_N_DISCONNECT_ind.reason,
+         omit,
+         vl_N_DISCONNECT_ind.connectionId,
+         omit
+      ));//send ASP_SCCP_N_DISCONNECT_ind
+
+      //stop inactivity timers
+      f_StopTimer(ias,pl_session);
+      f_StopTimer(iar,pl_session);
+
+      //assemble and route MTP3_ASP
+
+      vl_PDU_SCCP.released.messageType:=rlsd;
+      vl_PDU_SCCP.released.destLocRef:=ConnectionTable[pl_session].remoteReference;
+      vl_PDU_SCCP.released.sourceLocRef:=ConnectionTable[pl_session].localReference;
+      vl_PDU_SCCP.released.releaseCause:=cg_Rel_expRecInacTimer;
+      vl_PDU_SCCP.released.pointer1:=0;// No options
+      vl_PDU_SCCP.released.optionalPart:=omit;
+      vl_PDU_SCCP.released.eop:=omit;
+
+      MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Released
+
+      //start release timer
+      f_StartTimer(rel,pl_session);
+      ConnectionTable[pl_session].state:=disconnect_pending;
+
+    }//endif
+
+  }//ReceiveInactivity_Timer_Expired
+
+
+  //******************************************************************
+  function SendInactivity_Timer_Expired(integer pl_session) runs on SCCP_CT
+  //******************************************************************
+  {
+
+    //local declarations
+    var   PDU_SCCP             vl_PDU_SCCP;
+
+    //Action Table follows
+
+    if (ConnectionTable[pl_session].state==active)
+    {
+
+      //assemble and route MTP3_ASP
+      vl_PDU_SCCP.inacttest.messageType :=it;
+      vl_PDU_SCCP.inacttest.destLocRef  :=ConnectionTable[pl_session].remoteReference;
+      vl_PDU_SCCP.inacttest.sourceLocRef:=ConnectionTable[pl_session].localReference;
+
+      vl_PDU_SCCP.inacttest.protClass:={
+        class:='0010'B,
+        messageHandling:='0000'B
+      };//protocol class 2
+
+      vl_PDU_SCCP.inacttest.sequencingSegmenting:={
+        reserved:='0'B,
+        p_s:='0000000'B,
+        more:='0'B,
+        pr:='0000000'B
+      };//it will be ignored
+
+      vl_PDU_SCCP.inacttest.credit:='00'O;
+      //Param name credit(9), length 1, credit 0 -it will be mercifully ignored anyhow
+
+      MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send inactivity test
+
+      //restart send inactivity timer
+      f_StopTimer(ias,pl_session);//to avoid warnings
+      f_StartTimer(ias,pl_session);
+
+    }//endif
+
+  }//endfunction
+
+  //******************************************************************
+  function Conn_Timer_Expired(integer pl_session) runs on SCCP_CT
+  //******************************************************************
+  {
+
+    //local declarations
+    var        ASP_SCCP_N_DISCONNECT_ind  vl_N_DISCONNECT_ind;
+
+    if (ConnectionTable[pl_session].state==connection_pending_OG)
+    {
+      //assemble ASP_SCCP_N_
+      vl_N_DISCONNECT_ind.originator:=cg_NSP;
+      vl_N_DISCONNECT_ind.reason:=cg_DISC_abnormal_T;
+      vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[pl_session].connectionId;
+
+      SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+          vl_N_DISCONNECT_ind.originator,
+          omit,
+          vl_N_DISCONNECT_ind.reason,
+          omit,
+          vl_N_DISCONNECT_ind.connectionId,
+          omit
+          ));//send ASP_SCCP_N_DISCONNECT_ind
+
+          //release resources
+      ReleaseResources(pl_session);
+    }
+    else if (ConnectionTable[pl_session].state==wait_conn_confirm)
+    {
+      ReleaseResources(pl_session);
+    }
+
+  }//Conn_Timer_Expired
+
+  //******************************************************************
+  function GenerateLocalReference()  runs on SCCP_CT return OCT3
+  //******************************************************************
+  {
+    var OCT3 vl_LocalReference;
+
+    do
+    {
+      vl_LocalReference := int2oct(float2int(rnd()*tsp_maxLocalReference), 3 );
+    }
+    while ( Retrieve_session( vl_LocalReference ) != -1 );
+    return vl_LocalReference;
+
+  }//GenerateLocalReference
+
+  //******************************************************************
+  function GenerateConnectionId()  runs on SCCP_CT return integer
+  //******************************************************************
+  {
+    var integer vl_ConnectionId;
+
+    do { vl_ConnectionId := float2int(rnd()*tsp_max_ConnectionId); }
+    while ( Retrieve_session_connectionId(  vl_ConnectionId ) != -1 );
+
+    return vl_ConnectionId;
+  }//GenerateConnectionId
+
+  //******************************************************************
+  function Stop_sessionTimers ( integer pl_session) runs on SCCP_CT
+  //******************************************************************
+  {
+    if (T_conn_est[pl_session].running)
+      { f_StopTimer(conn_est,pl_session);}
+    if (T_ias[pl_session].running)
+      { f_StopTimer(ias,pl_session);}
+    if (T_iar[pl_session].running)
+      { f_StopTimer(iar,pl_session);}
+    if (T_rel[pl_session].running)
+      { f_StopTimer(rel,pl_session);}
+    if (T_repeat_rel[pl_session].running)
+      { f_StopTimer(repeat_rel,pl_session);}
+    if (T_int[pl_session].running)
+      { f_StopTimer(int,pl_session);}
+   // if (T_T_guard[pl_session].running)
+   //   { f_StopTimer(t_t_guard,pl_session);}
+    if (T_reset[pl_session].running)
+      { f_StopTimer(reset,pl_session);}
+    //T_reassembly[pl_session].stop;
+
+  }//Stop_sessionTimers
+
+  //******************************************************************
+  function CheckIdleIndividuals()  runs on SCCP_CT return integer
+  //******************************************************************
+  {
+    var integer vl_j;
+    for (vl_j:=0;vl_j<16;vl_j:=vl_j+1)
+    {
+       if (ConnectionTable[vl_j].state==idle)
+       {
+         log("First idle individual index:",vl_j);
+         return vl_j;
+       }
+    }
+
+    return -1;
+
+  }//CheckIdleIndividuals
+
+  //******************************************************************
+  function ConnectionAlreadyEstablished(  OCT3 pl_LocRef) runs on SCCP_CT  return boolean
+  //******************************************************************
+  {
+    var integer vl_j;
+    for (vl_j:=0;vl_j<16;vl_j:=vl_j+1)
+    {
+      if (ConnectionTable[vl_j].localReference==pl_LocRef)
+      {
+        return true;
+      }
+    }
+    return false;
+
+  } //ConnectionAlreadyEstablished
+
+  //******************************************************************
+  function ConnectionAlreadyEstablished_remote(  OCT3 pl_LocRef)  runs on SCCP_CT return boolean
+  //******************************************************************
+  {
+    var integer vl_j;
+
+    for (vl_j:=0;vl_j<16;vl_j:=vl_j+1)
+    {
+      if (ConnectionTable[vl_j].remoteReference==pl_LocRef)
+      {
+        return true;
+      }
+    }
+    return false;
+
+  } //ConnectionAlreadyEstablished_remote
+
+  //******************************************************************
+  function ConnectionAlreadyEstablished_connectionId(integer pl_ConnId) runs on SCCP_CT  return boolean
+  //******************************************************************
+  {
+    var integer vl_j;
+    for (vl_j:=0;vl_j<16;vl_j:=vl_j+1)
+    {
+      if (ConnectionTable[vl_j].connectionId==pl_ConnId)
+      {
+        return true;
+      }
+    }
+
+    return false;
+
+  } //ConnectionAlreadyEstablished_connectionId
+
+  //******************************************************************
+  function Retrieve_session(  OCT3 pl_LocRef ) runs on SCCP_CT  return integer
+  //******************************************************************
+  {
+    var integer vl_j;
+    for (vl_j:=0;vl_j<16;vl_j:=vl_j+1)
+    {
+
+      if (ConnectionTable[vl_j].localReference==pl_LocRef)
+      {
+        log("Session index based on local reference:",vl_j);
+        return vl_j;
+      }
+    }
+
+    return -1;
+
+  } //Retrieve_session
+
+  //******************************************************************
+  function Retrieve_session_remote(  OCT3 pl_LocRef )
+  runs on SCCP_CT return integer
+  //******************************************************************
+  {
+    var integer vl_j;
+    for (vl_j:=0;vl_j<16;vl_j:=vl_j+1)
+    {
+      if (ConnectionTable[vl_j].remoteReference==pl_LocRef)
+      {
+        log("Session index based on remote reference:",vl_j);
+        return vl_j;
+      }
+    }
+    return -1;
+
+  } //Retrieve_session_remote
+
+  //******************************************************************
+  function Retrieve_session_connectionId(  integer pl_ConnId )
+  runs on SCCP_CT return integer
+  //******************************************************************
+  {
+    var integer vl_j;
+    for (vl_j:=0;vl_j<16;vl_j:=vl_j+1)
+    {
+      if (ConnectionTable[vl_j].connectionId==pl_ConnId)
+      {
+        log("Session index based on connection ID:",vl_j);
+        return vl_j;
+      }
+    }
+    return -1;
+
+  } //Retrieve_session_connectionId
+
+  //==================================================================
+  // Connectionless Segmented Data Handling/
+  //==================================================================
+  //==================================================================
+  // SENDING: SCCP->MTP3 Segmentation Local Reference Handling
+  // Handles segmLocRefTable,v_segmLocRefIndex,
+  // which are defined in SCCP_typedefs.ttcn
+  //==================================================================
+
+  //******************************************************************
+  //function exist_segmLocalRef
+  //******************************************************************
+
+  function exist_segmLocalRef( in OCT3 pl_segLocRef)
+  runs on SCCP_CT return boolean
+  {
+    if( get_segmLocalRefIndex(pl_segLocRef) == -1 ) { return false;}
+    else { return true; };
+  } //exist_segmLocalRef
+
+  //******************************************************************
+  //function get_segLocalRefIndex
+  //******************************************************************
+
+  function get_segmLocalRefIndex(in OCT3 pl_segmLocRef)
+  runs on SCCP_CT return integer
+  {
+    var integer vl_j;
+    for (vl_j:=0;vl_j<16;vl_j:=vl_j+1)
+    {
+      if( segmLocRefTable[vl_j] == pl_segmLocRef ) { return vl_j;}
+    }
+    return -1;
+  }//get_segLocalRefIndex
+
+  //******************************************************************
+  //function reset_segmLocalRef
+  //******************************************************************
+  function reset_segmLocalRef(in OCT3 pl_segmLocRef)
+  runs on SCCP_CT
+  {
+    var integer vl_j;
+    vl_j:= get_segmLocalRefIndex( pl_segmLocRef )
+    segmLocRefTable[vl_j] := '000000'O;
+  }
+
+  //******************************************************************
+  // function create_segmLocalRef
+  //******************************************************************
+
+  function create_segmLocalRef()
+  runs on SCCP_CT return OCT3
+  {
+    var OCT3 vl_segmLocRef;
+    v_segmLocRefIndex := (v_segmLocRefIndex +1) mod 16;
+    do
+    {
+      vl_segmLocRef := int2oct(float2int( rnd() *tsp_maxLocalReference), 3 );
+    }
+    while ( exist_segmLocalRef( vl_segmLocRef ) );
+
+    return vl_segmLocRef;
+  }//create_segmLocalRef
+
+  //==================================================================
+  // RECEIVING CONNECTIONLESS PDUs BY SCCP
+  //==================================================================
+
+  //******************************************************************
+  //function exist_ClessRcvBuff
+  //******************************************************************
+  function exist_ClessRcvBuff( in OCT3 pl_segmRemRef)
+  runs on SCCP_CT return boolean
+  {
+    if( get_ClessRcvBuffIndex(pl_segmRemRef) == -1 ) { return false;}
+    else { return true; };
+  } //exist_ClessRcvBuff
+
+  //******************************************************************
+  //function get_segRemoteRefIndex
+  //******************************************************************
+  function get_ClessRcvBuffIndex(in OCT3 pl_segmRemRef)
+  runs on SCCP_CT return integer
+  {
+    var integer vl_j;
+    for (vl_j:=0;vl_j<16;vl_j:=vl_j+1)
+    {
+      if( ClessRcvBuffTable[vl_j].segmRemoteRef == pl_segmRemRef )
+      { return vl_j;}
+    }
+    return -1;
+  }//get_ClessRcvBuffIndex
+
+  //******************************************************************
+  //function get_idle_ClessRcvBuffIndex
+  //******************************************************************
+  function get_idle_ClessRcvBuffIndex( )
+  runs on SCCP_CT return integer
+  {
+    var integer vl_j;
+    for (vl_j:=0;vl_j<16;vl_j:=vl_j+1)
+    {
+      if( ClessRcvBuffTable[vl_j].state == segmLocRef_idle ) { return vl_j;}
+    }
+    return -1;
+  }//get_idle_ClessRcvBuffIndex
+
+  //******************************************************************
+  //function allocate_ClessRcvBuff
+  //******************************************************************
+  function allocate_ClessRcvBuff(in OCT3 pl_segmRemRef)
+  runs on SCCP_CT return integer
+  {
+    var OCT3 vl_segmRemRef;
+    var integer vl_j;
+
+    if( exist_ClessRcvBuff(pl_segmRemRef) ){ return -1;};
+
+    vl_j := get_idle_ClessRcvBuffIndex();
+    ClessRcvBuffTable[vl_j].state := segmLocRef_busy;
+    ClessRcvBuffTable[vl_j].segmRemoteRef := pl_segmRemRef;
+    ClessRcvBuffTable[vl_j].reassembler_buffer.buffer:=''O;
+    ClessRcvBuffTable[vl_j].reassembler_buffer.actlen:=0;
+    return vl_j;
+
+  }//allocate_ClessRcvBuff
+  //******************************************************************
+  //function reallocate_ClessRcvBuff
+  //******************************************************************
+  function reallocate_ClessRcvBuff(in  integer pl_index )
+  runs on SCCP_CT
+  {
+    ClessRcvBuffTable[pl_index].state := segmLocRef_idle;
+    // maybe unnecessaryy
+    ClessRcvBuffTable[pl_index].segmRemoteRef := '000000'O;
+    ClessRcvBuffTable[pl_index].reassembler_buffer.buffer:=''O;
+    ClessRcvBuffTable[pl_index].reassembler_buffer.actlen:=0;
+    return;
+  }
+
+  //******************************************************************
+  //function store_segmData
+  //******************************************************************
+  function store_segmData(in  integer pl_index, in PDU_SCCP_ExtUnitdata pl_PDU_SCCP_ExtUnitdata)
+  runs on SCCP_CT
+  {
+    ClessRcvBuffTable[pl_index].reassembler_buffer.buffer:=
+      ClessRcvBuffTable[pl_index].reassembler_buffer.buffer&
+      pl_PDU_SCCP_ExtUnitdata.data.data;
+    ClessRcvBuffTable[pl_index].reassembler_buffer.actlen:=
+      ClessRcvBuffTable[pl_index].reassembler_buffer.actlen+
+      pl_PDU_SCCP_ExtUnitdata.data.paramLength;
+  } //store_segmData
+
+  //******************************************************************
+  //function send_ClessRcvBuff_in_N_UNITDATAind
+  //******************************************************************
+  function send_ClessRcvBuff_in_N_UNITDATAind (
+    in integer pl_index,
+    in PDU_SCCP_ExtUnitdata pl_PDU_SCCP_ExtUnitdata)
+  runs on SCCP_CT
+  {
+      var ASP_SCCP_N_UNITDATA_ind vl_N_UNITDATA_ind;
+
+      vl_N_UNITDATA_ind.calledAddress  :=
+        ConvertPDUEncodedAddressToASPAddress( pl_PDU_SCCP_ExtUnitdata.calledPAddress );
+
+      vl_N_UNITDATA_ind.callingAddress :=
+        ConvertPDUEncodedAddressToASPAddress( pl_PDU_SCCP_ExtUnitdata.callingPAddress );
+
+      vl_N_UNITDATA_ind.sequenceControl:=
+        '0000000'B&pl_PDU_SCCP_ExtUnitdata.protClass.class[3];
+      if( pl_PDU_SCCP_ExtUnitdata.protClass.messageHandling == '1000'B )
+      { vl_N_UNITDATA_ind.returnOption   := '00000001'B; }
+      else
+      { vl_N_UNITDATA_ind.returnOption   := '00000000'B; }
+
+      vl_N_UNITDATA_ind.userData := ClessRcvBuffTable[pl_index].reassembler_buffer.buffer;
+
+      vl_N_UNITDATA_ind.importance := omit;
+
+      SCCP_SP_PORT.send( vl_N_UNITDATA_ind );
+
+      return;
+  }//send_ClessRcvBuff_in_N_UNITDATAind
+
+  //******************************************************************
+  //function send_ClessData_in_N_UNITDATAind
+  // unbuffered data sending
+  //******************************************************************
+
+  function send_ClessData_in_N_UNITDATAind (
+    in PDU_SCCP_ExtUnitdata pl_PDU_SCCP_ExtUnitdata)
+  runs on SCCP_CT
+  {
+      var ASP_SCCP_N_UNITDATA_ind vl_N_UNITDATA_ind;
+
+      vl_N_UNITDATA_ind.calledAddress  :=
+        ConvertPDUEncodedAddressToASPAddress( pl_PDU_SCCP_ExtUnitdata.calledPAddress );
+
+      vl_N_UNITDATA_ind.callingAddress :=
+        ConvertPDUEncodedAddressToASPAddress( pl_PDU_SCCP_ExtUnitdata.callingPAddress );
+
+      vl_N_UNITDATA_ind.sequenceControl:=
+        '0000000'B&pl_PDU_SCCP_ExtUnitdata.protClass.class[3];
+      if( pl_PDU_SCCP_ExtUnitdata.protClass.messageHandling == '1000'B )
+      { vl_N_UNITDATA_ind.returnOption   := '00000001'B; }
+      else
+      { vl_N_UNITDATA_ind.returnOption   := '00000000'B; }
+
+      vl_N_UNITDATA_ind.userData := pl_PDU_SCCP_ExtUnitdata.data.data;
+
+      vl_N_UNITDATA_ind.importance := omit;
+
+      SCCP_SP_PORT.send( vl_N_UNITDATA_ind );
+      return;
+  }//send_ClessData_in_N_UNITDATAind
+
+  //******************************************************************
+  //  CONN.ORIENTED SEGMENTING/REASSEMBLING
+  //******************************************************************
+
+  //******************************************************************
+  // SEGMENTING
+  //******************************************************************
+
+  //******************************************************************
+  // function sending_dataform1s_in_ASP_MTP_TRANSFERreqs
+  // segmentates data and sends segments in dataform1 messages
+  // included in asp_MTP3_TRANSFERreq PDUs
+  // == segmentation - connection oriented case ==
+  // counterpair: buffered_sending_ASP_N_DATA_ind
+  //******************************************************************
+  function sending_dataform1s_in_ASP_MTP_TRANSFERreqs( in ASP_SCCP_N_DATA_req pl_N_DATA_req )
+  runs on SCCP_CT
+  {
+    var PDU_SCCP vl_PDU_SCCP;
+    var integer vl_len;
+    var integer vl_actdatalen;
+    var SCCP_PAR_UserData vl_data;
+    var integer vl_from; // first position in vl_data to be sent
+    vl_data := pl_N_DATA_req.userData;
+    vl_from := 0;
+    // fixed part of messages:
+    vl_PDU_SCCP.dataform1.messageType:=dt1;
+    vl_PDU_SCCP.dataform1.destLocRef:=ConnectionTable[v_session].remoteReference;
+    vl_PDU_SCCP.dataform1.segmentingReassembl:={
+      more:='1'B,
+      reserved:='0000000'B
+    };
+    vl_PDU_SCCP.dataform1.pointer1:=1;
+    // variable part of messages:
+    vl_len := lengthof(vl_data);
+
+    while ( vl_len > 0 )
+    {
+
+      log("vl_len:",vl_len);
+      log("vl_from",vl_from);
+      if(vl_len > v_sccp_data_maxlen)
+      {
+        vl_actdatalen := v_sccp_data_maxlen;
+        vl_PDU_SCCP.dataform1.segmentingReassembl.more :='1'B;
+      }
+      else
+      {
+        vl_actdatalen := vl_len;
+        vl_PDU_SCCP.dataform1.segmentingReassembl.more :='0'B;
+      };
+
+      vl_PDU_SCCP.dataform1.data.data:= substr( vl_data, vl_from, vl_actdatalen);
+      vl_PDU_SCCP.dataform1.data.paramLength:= vl_actdatalen;
+
+      MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+          (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Data Form1
+
+      log( "data sent by MTP3_SCCP_PORT: ",vl_PDU_SCCP.dataform1.data.data);
+
+      //restart send inactivity timer
+      f_StopTimer(ias,v_session);//to avoid warnings
+      f_StartTimer(ias,v_session);
+
+      vl_from := vl_from + vl_actdatalen;
+      vl_len  := vl_len  - vl_actdatalen;
+
+    }//while
+  } //sending_dataform1s_in_ASP_MTP_TRANSFERreqs
+
+  //******************************************************************
+  // REASSEMBLING
+  //******************************************************************
+
+  //******************************************************************
+  // function buffered_sending_ASP_N_DATA_ind
+  // counterpair of sending_dataform1s_in_ASP_MTP_TRANSFERreqs
+  //******************************************************************
+
+  function buffered_sending_ASP_N_DATA_ind( in PDU_SCCP_DataForm1 pl_PDU_SCCP_DataForm1 )
+  runs on SCCP_CT
+  {
+    // Investigate this shorcut (not implemented):
+    // if actlen==0 and more==0=> send immediately
+
+    // DT1 should be put to the reassembly buffer
+    var integer vl_newbufflen;
+    log("DT1 will be put to the reassembly buffer");
+    //log( ConnectionTable[v_session].connectionId );
+    vl_newbufflen := ConnectionTable[v_session].reassembler_buffer.actlen +
+      pl_PDU_SCCP_DataForm1.data.paramLength;
+
+    if( vl_newbufflen <=  ConnectionTable[v_session].reassembler_buffer.maxlen)
+    {
+      ConnectionTable[v_session].reassembler_buffer.buffer :=
+        ConnectionTable[v_session].reassembler_buffer.buffer &
+        pl_PDU_SCCP_DataForm1.data.data;
+      ConnectionTable[v_session].reassembler_buffer.actlen := vl_newbufflen;
+      log("DT1 data has been put to the reassembly buffer");
+    }
+    else
+    {
+      //send as much as possible OR error ???? NOT READY YET !!!!
+      //CONT HERE, ask LAFA
+      log("Unexpected/unimplemented program branch");
+    }
+
+    // sending:
+    if( pl_PDU_SCCP_DataForm1.segmentingReassembl.more == '0'B )
+    {
+      log("DT1/segmentingReassembl/more==0 received=> send ASP_SCCP_N_DATA comes");
+      //send:
+      SCCP_SP_PORT.send( t_ASP_N_DATA_ind(
+        ConnectionTable[v_session].reassembler_buffer.buffer,
+        ConnectionTable[v_session].connectionId,
+        omit));
+
+      //restart send inactivity timer
+      f_StopTimer(ias,v_session);//to avoid warnings
+      f_StartTimer(ias,v_session);
+
+      // clear the buffer:
+      ConnectionTable[v_session].reassembler_buffer.buffer :=''O;
+      ConnectionTable[v_session].reassembler_buffer.actlen := 0;
+    }
+    else
+    {
+      log("DT1/segmentingReassembl/more==1 received=> sent to buffer only");
+    }
+  }//buffered_sending_ASP_N_DATA_ind
+
+
+  //******************************************************************
+  //    CONVERSIONS
+  //******************************************************************
+  //
+  // Differences between standards are hidden here !!!!
+  //
+  // 3 different functions working on different structures with the
+  // virtually indentical code
+
+  //******************************************************************
+  // Functions coding ASP address into octetstream
+  //******************************************************************
+
+  // ITU
+
+  function ConvertASPAddressToEncodedAddress_itu( in SCCP_PAR_Address pl_ASPAddress)
+    runs on SCCP_CT
+    return SCCP_param_CPartyAddressEnc
+  {
+
+    var SCCP_param_CPartyAddress_itu vl_PDUAddress; //structured fit to encoding
+    var SCCP_param_CPartyAddressEnc vl_PDUAddressEncoded;
+
+    vl_PDUAddress.addressIndicator.pointCodeIndic:=
+      pl_ASPAddress.addressIndicator.pointCodeIndic;
+
+    vl_PDUAddress.addressIndicator.ssnIndicator:=
+      pl_ASPAddress.addressIndicator.ssnIndicator;
+
+    vl_PDUAddress.addressIndicator.globalTitleIndic:=
+     pl_ASPAddress.addressIndicator.globalTitleIndic;
+
+    vl_PDUAddress.addressIndicator.routingIndicator:=
+      pl_ASPAddress.addressIndicator.routingIndicator;
+
+    vl_PDUAddress.addressIndicator.reserved:='0'B;
+    // if (ischosen(pl_ASPAddress.signPointCode) ) not used because it is mandatory field (???)
+
+    //----signPointCode handling
+    if ( ispresent( pl_ASPAddress.signPointCode )) {
+      vl_PDUAddress.signPointCode :=
+        '00'B&pl_ASPAddress.signPointCode;
+    } else {
+      vl_PDUAddress.signPointCode := omit;
+    };
+
+    //----subsystemNumber handling
+    if ( ispresent( pl_ASPAddress.subsystemNumber ) ){
+      vl_PDUAddress.subsystemNumber := pl_ASPAddress.subsystemNumber;
+    } else {
+      vl_PDUAddress.subsystemNumber :=omit;
+    };
+
+    // --- globalTitle handling--
+    if ( ispresent(pl_ASPAddress.globalTitle))
+    {//startif1
+
+      var SCCP_ASPfield_GlobalTitle tmpGT ;
+      tmpGT := pl_ASPAddress.globalTitle;
+
+      if (ischosen(tmpGT.gti0001))
+      {
+        vl_PDUAddress.globalTitle.gti0001.natureOfAddress:=tmpGT.gti0001.natureOfAddress;
+        vl_PDUAddress.globalTitle.gti0001.oddeven:=tmpGT.gti0001.oddeven;
+        vl_PDUAddress.globalTitle.gti0001.globalTitleAddress:=tmpGT.gti0001.globalTitleAddress;
+      }
+      else if (ischosen(tmpGT.gti0010))
+      {
+        vl_PDUAddress.globalTitle.gti0010.translationType:=tmpGT.gti0010.translationType;
+        vl_PDUAddress.globalTitle.gti0010.globalTitleAddress:=tmpGT.gti0010.globalTitleAddress;
+      }
+      else if (ischosen(tmpGT.gti0011))
+      {
+        vl_PDUAddress.globalTitle.gti0011.translationType:=tmpGT.gti0011.translationType;
+        vl_PDUAddress.globalTitle.gti0011.encodingScheme:=tmpGT.gti0011.encodingScheme;
+        vl_PDUAddress.globalTitle.gti0011.numberingPlan:=tmpGT.gti0011.numberingPlan;
+        vl_PDUAddress.globalTitle.gti0011.globalTitleAddress:=tmpGT.gti0011.globalTitleAddress;
+      }
+      else if (ischosen(tmpGT.gti0100))
+      {
+        vl_PDUAddress.globalTitle.gti0100.translationType:=tmpGT.gti0100.translationType;
+        vl_PDUAddress.globalTitle.gti0100.encodingScheme:=tmpGT.gti0100.encodingScheme;
+        vl_PDUAddress.globalTitle.gti0100.numberingPlan:=tmpGT.gti0100.numberingPlan;
+        vl_PDUAddress.globalTitle.gti0100.natureOfAddress:=tmpGT.gti0100.natureOfAddress;
+        vl_PDUAddress.globalTitle.gti0100.reserved:='0'B;
+        vl_PDUAddress.globalTitle.gti0100.globalTitleAddress:=tmpGT.gti0100.globalTitleAddress;
+      }
+    }
+    else
+    {
+        vl_PDUAddress.globalTitle := omit;
+    };
+
+    vl_PDUAddressEncoded.addr:= enc_PDU_SCCP_Address_itu( vl_PDUAddress);
+    vl_PDUAddressEncoded.paramLength:= lengthof(vl_PDUAddressEncoded.addr);
+
+    return vl_PDUAddressEncoded;
+
+  } //ConvertASPAddressToEncodedAddress_itu
+
+  //******************************************************************
+
+  // ANSI
+  function ConvertASPAddressToEncodedAddress_ansi(in SCCP_PAR_Address pl_ASPAddress)
+    runs on SCCP_CT return SCCP_param_CPartyAddressEnc
+    {
+
+    var SCCP_param_CPartyAddress_ansi  vl_PDUAddress; //structured fit to encoding
+    var SCCP_param_CPartyAddressEnc vl_PDUAddressEncoded;
+
+    vl_PDUAddress.addressIndicator.pointCodeIndic:=
+      pl_ASPAddress.addressIndicator.pointCodeIndic;
+
+    vl_PDUAddress.addressIndicator.ssnIndicator:=
+      pl_ASPAddress.addressIndicator.ssnIndicator;
+
+    vl_PDUAddress.addressIndicator.globalTitleIndic:=
+     pl_ASPAddress.addressIndicator.globalTitleIndic;
+
+    vl_PDUAddress.addressIndicator.routingIndicator:=
+      pl_ASPAddress.addressIndicator.routingIndicator;
+
+    vl_PDUAddress.addressIndicator.reserved:='1'B;
+
+    //----signPointCode handling
+    if ( ispresent( pl_ASPAddress.signPointCode )){
+      vl_PDUAddress.signPointCode := pl_ASPAddress.signPointCode;
+    } else {
+      vl_PDUAddress.signPointCode := omit;
+    };
+
+    //----subsystemNumber handling
+    if ( ispresent( pl_ASPAddress.subsystemNumber )) {
+      vl_PDUAddress.subsystemNumber:=pl_ASPAddress.subsystemNumber;
+    } else {
+      vl_PDUAddress.subsystemNumber :=omit;
+    };
+
+    if (ispresent(pl_ASPAddress.globalTitle))
+    {//startif1
+
+      var SCCP_ASPfield_GlobalTitle tmpGT := pl_ASPAddress.globalTitle;
+
+
+      if (ischosen(tmpGT.gti0010))
+      {
+        vl_PDUAddress.globalTitle.gti0010.translationType:=tmpGT.gti0010.translationType;
+        vl_PDUAddress.globalTitle.gti0010.globalTitleAddress:=tmpGT.gti0010.globalTitleAddress;
+      }
+      else if (ischosen(tmpGT.gti0011)) //ansi gti001, meaning:
+                                        //used GT: SCCP_field_GlobalTitle_TT_NP_ES
+      {
+        //the left side is ANSI!!!:
+        vl_PDUAddress.globalTitle.gti0001.translationType:=tmpGT.gti0011.translationType;
+        vl_PDUAddress.globalTitle.gti0001.encodingScheme:=tmpGT.gti0011.encodingScheme;
+        vl_PDUAddress.globalTitle.gti0001.numberingPlan:=tmpGT.gti0011.numberingPlan;
+        vl_PDUAddress.globalTitle.gti0001.globalTitleAddress:=tmpGT.gti0011.globalTitleAddress;
+      };
+
+    }
+    else
+    {
+        vl_PDUAddress.globalTitle := omit;
+    };
+
+    // SCCP_param_CPartyAddress_ansi -> octetstring
+    vl_PDUAddressEncoded.addr:= enc_PDU_SCCP_Address_ansi( vl_PDUAddress);
+    vl_PDUAddressEncoded.paramLength:= lengthof(vl_PDUAddressEncoded.addr);
+
+    return vl_PDUAddressEncoded
+
+  } //ConvertASPAddressToEncodedAddress_ansi
+
+  // ttc national:
+
+  function ConvertASPAddressToEncodedAddress_ttc( in SCCP_PAR_Address pl_ASPAddress)
+    runs on SCCP_CT
+    return SCCP_param_CPartyAddressEnc
+  {
+
+    var SCCP_param_CPartyAddress_ttc vl_PDUAddress; //structured fit to encoding
+    var SCCP_param_CPartyAddressEnc vl_PDUAddressEncoded;
+
+    vl_PDUAddress.addressIndicator.pointCodeIndic:=
+      pl_ASPAddress.addressIndicator.pointCodeIndic;
+
+    vl_PDUAddress.addressIndicator.ssnIndicator:=
+      pl_ASPAddress.addressIndicator.ssnIndicator;
+
+    vl_PDUAddress.addressIndicator.globalTitleIndic:=
+     pl_ASPAddress.addressIndicator.globalTitleIndic;
+
+    vl_PDUAddress.addressIndicator.routingIndicator:=
+      pl_ASPAddress.addressIndicator.routingIndicator;
+
+    vl_PDUAddress.addressIndicator.reserved:='1'B;
+
+    //----signPointCode handling
+    if ( ispresent( pl_ASPAddress.signPointCode )) {
+      vl_PDUAddress.signPointCode := pl_ASPAddress.signPointCode;
+    } else {
+      vl_PDUAddress.signPointCode := omit;
+    };
+
+    //----subsystemNumber handling
+    if ( ispresent( pl_ASPAddress.subsystemNumber ) ){
+      vl_PDUAddress.subsystemNumber:= pl_ASPAddress.subsystemNumber;
+    } else {
+      vl_PDUAddress.subsystemNumber :=omit;
+    };
+
+    // --- globalTitle handling--
+    if ( ispresent(pl_ASPAddress.globalTitle))
+    {//startif1
+
+      var SCCP_ASPfield_GlobalTitle tmpGT ;
+      tmpGT := pl_ASPAddress.globalTitle;
+
+      if (ischosen(tmpGT.gti0001))
+      {
+        vl_PDUAddress.globalTitle.gti0001.natureOfAddress:=tmpGT.gti0001.natureOfAddress;
+        vl_PDUAddress.globalTitle.gti0001.oddeven:=tmpGT.gti0001.oddeven;
+        vl_PDUAddress.globalTitle.gti0001.globalTitleAddress:=tmpGT.gti0001.globalTitleAddress;
+      }
+      else if (ischosen(tmpGT.gti0010))
+      {
+        vl_PDUAddress.globalTitle.gti0010.translationType:=tmpGT.gti0010.translationType;
+        vl_PDUAddress.globalTitle.gti0010.globalTitleAddress:=tmpGT.gti0010.globalTitleAddress;
+      }
+      else if (ischosen(tmpGT.gti0011))
+      {
+        vl_PDUAddress.globalTitle.gti0011.translationType:=tmpGT.gti0011.translationType;
+        vl_PDUAddress.globalTitle.gti0011.encodingScheme:=tmpGT.gti0011.encodingScheme;
+        vl_PDUAddress.globalTitle.gti0011.numberingPlan:=tmpGT.gti0011.numberingPlan;
+        vl_PDUAddress.globalTitle.gti0011.globalTitleAddress:=tmpGT.gti0011.globalTitleAddress;
+      }
+      else if (ischosen(tmpGT.gti0100))
+      {
+        vl_PDUAddress.globalTitle.gti0100.translationType:=tmpGT.gti0100.translationType;
+        vl_PDUAddress.globalTitle.gti0100.encodingScheme:=tmpGT.gti0100.encodingScheme;
+        vl_PDUAddress.globalTitle.gti0100.numberingPlan:=tmpGT.gti0100.numberingPlan;
+        vl_PDUAddress.globalTitle.gti0100.natureOfAddress:=tmpGT.gti0100.natureOfAddress;
+        vl_PDUAddress.globalTitle.gti0100.reserved:='0'B;
+        vl_PDUAddress.globalTitle.gti0100.globalTitleAddress:=tmpGT.gti0100.globalTitleAddress;
+      };
+    }
+    else
+    {
+        vl_PDUAddress.globalTitle := omit;
+    };
+
+    vl_PDUAddressEncoded.addr:= enc_PDU_SCCP_Address_ttc( vl_PDUAddress);
+    vl_PDUAddressEncoded.paramLength:= lengthof(vl_PDUAddressEncoded.addr);
+
+    return vl_PDUAddressEncoded;
+
+  } //ConvertASPAddressToEncodedAddress_ttc
+
+  // mpt national:
+
+  function ConvertASPAddressToEncodedAddress_mpt( in SCCP_PAR_Address pl_ASPAddress)
+    runs on SCCP_CT
+    return SCCP_param_CPartyAddressEnc
+  {
+
+    var SCCP_param_CPartyAddress_mpt vl_PDUAddress; //structured fit to encoding
+    var SCCP_param_CPartyAddressEnc vl_PDUAddressEncoded;
+
+    vl_PDUAddress.addressIndicator.pointCodeIndic:=
+      pl_ASPAddress.addressIndicator.pointCodeIndic;
+
+    vl_PDUAddress.addressIndicator.ssnIndicator:=
+      pl_ASPAddress.addressIndicator.ssnIndicator;
+
+    vl_PDUAddress.addressIndicator.globalTitleIndic:=
+     pl_ASPAddress.addressIndicator.globalTitleIndic;
+
+    vl_PDUAddress.addressIndicator.routingIndicator:=
+      pl_ASPAddress.addressIndicator.routingIndicator;
+
+    vl_PDUAddress.addressIndicator.reserved:='1'B;
+
+    //----signPointCode handling
+    if ( ispresent( pl_ASPAddress.signPointCode )) {
+      vl_PDUAddress.signPointCode := pl_ASPAddress.signPointCode;
+    } else {
+      vl_PDUAddress.signPointCode := omit;
+    };
+
+    //----subsystemNumber handling
+    if ( ispresent( pl_ASPAddress.subsystemNumber ) ){
+      vl_PDUAddress.subsystemNumber:= pl_ASPAddress.subsystemNumber;
+    } else {
+      vl_PDUAddress.subsystemNumber :=omit;
+    };
+
+    // --- globalTitle handling--
+    if ( ispresent(pl_ASPAddress.globalTitle))
+    {//startif1
+
+      var SCCP_ASPfield_GlobalTitle tmpGT ;
+      tmpGT := pl_ASPAddress.globalTitle;
+
+      if (ischosen(tmpGT.gti0001))
+      {
+        vl_PDUAddress.globalTitle.gti0001.natureOfAddress:=tmpGT.gti0001.natureOfAddress;
+        vl_PDUAddress.globalTitle.gti0001.oddeven:=tmpGT.gti0001.oddeven;
+        vl_PDUAddress.globalTitle.gti0001.globalTitleAddress:=tmpGT.gti0001.globalTitleAddress;
+      }
+      else if (ischosen(tmpGT.gti0010))
+      {
+        vl_PDUAddress.globalTitle.gti0010.translationType:=tmpGT.gti0010.translationType;
+        vl_PDUAddress.globalTitle.gti0010.globalTitleAddress:=tmpGT.gti0010.globalTitleAddress;
+      }
+      else if (ischosen(tmpGT.gti0011))
+      {
+        vl_PDUAddress.globalTitle.gti0011.translationType:=tmpGT.gti0011.translationType;
+        vl_PDUAddress.globalTitle.gti0011.encodingScheme:=tmpGT.gti0011.encodingScheme;
+        vl_PDUAddress.globalTitle.gti0011.numberingPlan:=tmpGT.gti0011.numberingPlan;
+        vl_PDUAddress.globalTitle.gti0011.globalTitleAddress:=tmpGT.gti0011.globalTitleAddress;
+      }
+      else if (ischosen(tmpGT.gti0100))
+      {
+        vl_PDUAddress.globalTitle.gti0100.translationType:=tmpGT.gti0100.translationType;
+        vl_PDUAddress.globalTitle.gti0100.encodingScheme:=tmpGT.gti0100.encodingScheme;
+        vl_PDUAddress.globalTitle.gti0100.numberingPlan:=tmpGT.gti0100.numberingPlan;
+        vl_PDUAddress.globalTitle.gti0100.natureOfAddress:=tmpGT.gti0100.natureOfAddress;
+        vl_PDUAddress.globalTitle.gti0100.reserved:='0'B;
+        vl_PDUAddress.globalTitle.gti0100.globalTitleAddress:=tmpGT.gti0100.globalTitleAddress;
+      };
+    }
+    else
+    {
+        vl_PDUAddress.globalTitle := omit;
+    };
+
+    vl_PDUAddressEncoded.addr:= enc_PDU_SCCP_Address_mpt( vl_PDUAddress);
+    vl_PDUAddressEncoded.paramLength:= lengthof(vl_PDUAddressEncoded.addr);
+
+    return vl_PDUAddressEncoded;
+
+  } //ConvertASPAddressToEncodedAddress_mpt
+
+  //******************************************************************
+
+  //******************************************************************
+  // CONVERSION / DECODING
+  //******************************************************************
+
+  //******************************************************************
+  // function ConvertPDUEncodedAddressToASPAddress_itu
+  // converts Encoded PDU Address into sturctured ASP Address
+  // according to ITU
+  //******************************************************************
+  function ConvertPDUEncodedAddressToASPAddress_itu( in SCCP_param_CPartyAddressEnc pl_PDUAddress)
+    runs on SCCP_CT return SCCP_PAR_Address
+  {
+    var SCCP_PAR_Address  vl_ASPAddress;
+    var SCCP_ASPfield_GlobalTitle tmpGT; // the same for itu, ansi and ttc
+    var SCCP_param_CPartyAddress_itu vl_PDUAddress;
+
+    //new code detail (ethbaat 2003.11.04:
+    // decoding from octetstring to structure "SCCP_param_CPartyAddress_itu":
+    vl_PDUAddress := dec_PDU_SCCP_Address_itu( pl_PDUAddress.addr );
+
+    vl_ASPAddress.addressIndicator.pointCodeIndic   :=
+      vl_PDUAddress.addressIndicator.pointCodeIndic;
+
+    vl_ASPAddress.addressIndicator.ssnIndicator     :=
+      vl_PDUAddress.addressIndicator.ssnIndicator;
+
+    vl_ASPAddress.addressIndicator.globalTitleIndic :=
+      vl_PDUAddress.addressIndicator.globalTitleIndic;
+
+    vl_ASPAddress.addressIndicator.routingIndicator :=
+      vl_PDUAddress.addressIndicator.routingIndicator;
+
+    if (ispresent ( vl_PDUAddress.signPointCode)) {
+       vl_ASPAddress.signPointCode:= substr(vl_PDUAddress.signPointCode,2,14);
+    }
+    else   {
+      vl_ASPAddress.signPointCode := omit; //ethbaat 2003.11.04
+    }
+
+    if (ispresent (vl_PDUAddress.subsystemNumber )) {  //always suggested ...
+      vl_ASPAddress.subsystemNumber:= vl_PDUAddress.subsystemNumber;
+    }
+    else {
+      vl_ASPAddress.subsystemNumber:=omit;  //ethbaat 2003.11.04
+    }
+
+    if( ispresent( vl_PDUAddress.globalTitle ) ){
+      if  (ischosen (vl_PDUAddress.globalTitle.gti0001))
+      {
+        tmpGT.gti0001.natureOfAddress:=vl_PDUAddress.globalTitle.gti0001.natureOfAddress;
+        tmpGT.gti0001.oddeven:=vl_PDUAddress.globalTitle.gti0001.oddeven;
+        tmpGT.gti0001.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0001.globalTitleAddress;
+        vl_ASPAddress.globalTitle:=tmpGT;
+      }
+      else if  (ischosen (vl_PDUAddress.globalTitle.gti0010))
+      {
+        tmpGT.gti0010.translationType:=vl_PDUAddress.globalTitle.gti0010.translationType;
+        tmpGT.gti0010.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0010.globalTitleAddress;
+        vl_ASPAddress.globalTitle:=tmpGT;
+      }
+      else if  (ischosen (vl_PDUAddress.globalTitle.gti0011))
+      {
+        tmpGT.gti0011.translationType   :=vl_PDUAddress.globalTitle.gti0011.translationType;
+        tmpGT.gti0011.encodingScheme    :=vl_PDUAddress.globalTitle.gti0011.encodingScheme;
+        tmpGT.gti0011.numberingPlan     :=vl_PDUAddress.globalTitle.gti0011.numberingPlan;
+        tmpGT.gti0011.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0011.globalTitleAddress;
+        vl_ASPAddress.globalTitle     :=tmpGT;
+      }
+      else if  (ischosen (vl_PDUAddress.globalTitle.gti0100))
+      {
+        tmpGT.gti0100.translationType   :=vl_PDUAddress.globalTitle.gti0100.translationType;
+        tmpGT.gti0100.encodingScheme    :=vl_PDUAddress.globalTitle.gti0100.encodingScheme;
+        tmpGT.gti0100.numberingPlan     :=vl_PDUAddress.globalTitle.gti0100.numberingPlan;
+        tmpGT.gti0100.natureOfAddress   :=vl_PDUAddress.globalTitle.gti0100.natureOfAddress
+        //tmpGT.gti0100.reserved:='00'B;
+        tmpGT.gti0100.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0100.globalTitleAddress;
+        vl_ASPAddress.globalTitle     :=tmpGT;
+      }
+    }
+    else
+    {
+      vl_ASPAddress.globalTitle:= omit;
+    };
+
+    return vl_ASPAddress;
+  } //ConvertPDUEncodedAddressToASPAddress_itu
+
+  //******************************************************************
+  // function ConvertPDUEncodedAddressToASPAddress_ansi
+  // converts Encoded PDU Address into sturctured ASP Address
+  // according to ANSI
+  //******************************************************************
+
+  function ConvertPDUEncodedAddressToASPAddress_ansi( in SCCP_param_CPartyAddressEnc pl_PDUAddress)
+    runs on SCCP_CT return SCCP_PAR_Address
+  {
+    var SCCP_PAR_Address  vl_ASPAddress;
+    var SCCP_ASPfield_GlobalTitle tmpGT; // the same for itu, ansi and ttc
+    var SCCP_param_CPartyAddress_ansi vl_PDUAddress;
+
+    //new code detail (ethbaat 2003.11.04:
+    // decoding from octetstring to structure "SCCP_param_CPartyAddress_itu":
+    vl_PDUAddress := dec_PDU_SCCP_Address_ansi( pl_PDUAddress.addr );
+
+    vl_ASPAddress.addressIndicator.pointCodeIndic   :=
+      vl_PDUAddress.addressIndicator.pointCodeIndic;
+
+    vl_ASPAddress.addressIndicator.ssnIndicator     :=
+      vl_PDUAddress.addressIndicator.ssnIndicator;
+
+    vl_ASPAddress.addressIndicator.globalTitleIndic :=
+      vl_PDUAddress.addressIndicator.globalTitleIndic;
+
+    vl_ASPAddress.addressIndicator.routingIndicator :=
+      vl_PDUAddress.addressIndicator.routingIndicator;
+
+    if (ispresent (vl_PDUAddress.signPointCode )) {
+      vl_ASPAddress.signPointCode:=  vl_PDUAddress.signPointCode;
+    }
+    else   {
+     //vl_ASPAddress.signPointCode.pointCode:='0000000000000000'B; //or empty??? ( 16len bitstring
+     vl_ASPAddress.signPointCode:= omit; //ethbaat 2003.11.11
+    }
+
+    if (ispresent (vl_PDUAddress.subsystemNumber)) {  //always suggested ...
+      vl_ASPAddress.subsystemNumber:= vl_PDUAddress.subsystemNumber;
+    }
+    else {
+      vl_ASPAddress.subsystemNumber:=omit;  //ethbaat 2003.11.04
+      //vl_ASPAddress.subsystemNumber:= 0;
+    };
+
+    if( ispresent( vl_PDUAddress.globalTitle ) ){
+      if  (ischosen (vl_PDUAddress.globalTitle.gti0001))
+      {
+        tmpGT.gti0011.translationType   :=vl_PDUAddress.globalTitle.gti0001.translationType;
+        tmpGT.gti0011.encodingScheme    :=vl_PDUAddress.globalTitle.gti0001.encodingScheme;
+        tmpGT.gti0011.numberingPlan     :=vl_PDUAddress.globalTitle.gti0001.numberingPlan;
+        tmpGT.gti0011.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0001.globalTitleAddress;
+        vl_ASPAddress.globalTitle     :=tmpGT;
+      }
+      if  (ischosen (vl_PDUAddress.globalTitle.gti0010))
+      {
+        tmpGT.gti0010.translationType:=vl_PDUAddress.globalTitle.gti0010.translationType;
+        tmpGT.gti0010.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0010.globalTitleAddress;
+        vl_ASPAddress.globalTitle:=tmpGT;
+      };
+    }
+    else
+    {
+      vl_ASPAddress.globalTitle:= omit;
+    };
+
+    return vl_ASPAddress;
+  } //ConvertPDUEncodedAddressToASPAddress_ansi
+
+  //******************************************************************
+  // function ConvertPDUEncodedAddressToASPAddress_ttc
+  // converts Encoded PDU Address into sturctured ASP Address
+  // according to ttc
+  //******************************************************************
+  function ConvertPDUEncodedAddressToASPAddress_ttc( in SCCP_param_CPartyAddressEnc pl_PDUAddress)
+    runs on SCCP_CT return SCCP_PAR_Address
+  {
+    var SCCP_PAR_Address  vl_ASPAddress;
+    var SCCP_ASPfield_GlobalTitle tmpGT; // the same for itu, ansi and ttc
+    var SCCP_param_CPartyAddress_ttc vl_PDUAddress;
+
+    //new code detail (ethbaat 2003.11.04:
+    // decoding from octetstring to structure "SCCP_param_CPartyAddress_itu":
+    vl_PDUAddress := dec_PDU_SCCP_Address_ttc( pl_PDUAddress.addr );
+
+    vl_ASPAddress.addressIndicator.pointCodeIndic   :=
+      vl_PDUAddress.addressIndicator.pointCodeIndic;
+
+    vl_ASPAddress.addressIndicator.ssnIndicator     :=
+      vl_PDUAddress.addressIndicator.ssnIndicator;
+
+    vl_ASPAddress.addressIndicator.globalTitleIndic :=
+      vl_PDUAddress.addressIndicator.globalTitleIndic;
+
+    vl_ASPAddress.addressIndicator.routingIndicator :=
+      vl_PDUAddress.addressIndicator.routingIndicator;
+
+    if (ispresent ( vl_PDUAddress.signPointCode)) {
+       vl_ASPAddress.signPointCode:= vl_PDUAddress.signPointCode; //old:substr(vl_PDUAddress.signPointCode,2,16);
+    }
+    else   {
+      vl_ASPAddress.signPointCode := omit; //ethbaat 2003.11.04
+    }
+
+    if (ispresent (vl_PDUAddress.subsystemNumber )) {  //always suggested ...
+      vl_ASPAddress.subsystemNumber:= vl_PDUAddress.subsystemNumber;
+    }
+    else {
+      vl_ASPAddress.subsystemNumber:=omit;  //ethbaat 2003.11.04
+    }
+
+    if( ispresent( vl_PDUAddress.globalTitle)){
+      if  (ischosen (vl_PDUAddress.globalTitle.gti0001))
+      {
+        tmpGT.gti0001.natureOfAddress:=vl_PDUAddress.globalTitle.gti0001.natureOfAddress;
+        tmpGT.gti0001.oddeven:=vl_PDUAddress.globalTitle.gti0001.oddeven;
+        tmpGT.gti0001.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0001.globalTitleAddress;
+        vl_ASPAddress.globalTitle:=tmpGT;
+      }
+      else if  (ischosen (vl_PDUAddress.globalTitle.gti0010))
+      {
+        tmpGT.gti0010.translationType:=vl_PDUAddress.globalTitle.gti0010.translationType;
+        tmpGT.gti0010.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0010.globalTitleAddress;
+        vl_ASPAddress.globalTitle:=tmpGT;
+      }
+      else if  (ischosen (vl_PDUAddress.globalTitle.gti0011))
+      {
+        tmpGT.gti0011.translationType   :=vl_PDUAddress.globalTitle.gti0011.translationType;
+        tmpGT.gti0011.encodingScheme    :=vl_PDUAddress.globalTitle.gti0011.encodingScheme;
+        tmpGT.gti0011.numberingPlan     :=vl_PDUAddress.globalTitle.gti0011.numberingPlan;
+        tmpGT.gti0011.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0011.globalTitleAddress;
+        vl_ASPAddress.globalTitle     :=tmpGT;
+      }
+      else if  (ischosen (vl_PDUAddress.globalTitle.gti0100))
+      {
+        tmpGT.gti0100.translationType   :=vl_PDUAddress.globalTitle.gti0100.translationType;
+        tmpGT.gti0100.encodingScheme    :=vl_PDUAddress.globalTitle.gti0100.encodingScheme;
+        tmpGT.gti0100.numberingPlan     :=vl_PDUAddress.globalTitle.gti0100.numberingPlan;
+        tmpGT.gti0100.natureOfAddress   :=vl_PDUAddress.globalTitle.gti0100.natureOfAddress;
+        //tmpGT.gti0100.reserved:='00'B;
+        tmpGT.gti0100.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0100.globalTitleAddress;
+        vl_ASPAddress.globalTitle     :=tmpGT;
+      };
+    }
+    else
+    {
+      vl_ASPAddress.globalTitle:= omit;
+    };
+
+    return vl_ASPAddress;
+  } //ConvertPDUEncodedAddressToASPAddress_ttc
+
+  //******************************************************************
+  // function ConvertPDUEncodedAddressToASPAddress_mpt
+  // converts Encoded PDU Address into sturctured ASP Address
+  // according to mpt
+  //******************************************************************
+  function ConvertPDUEncodedAddressToASPAddress_mpt( in SCCP_param_CPartyAddressEnc pl_PDUAddress)
+    runs on SCCP_CT return SCCP_PAR_Address
+  {
+    var SCCP_PAR_Address  vl_ASPAddress;
+    var SCCP_ASPfield_GlobalTitle tmpGT; // the same for itu, ansi and ttc
+    var SCCP_param_CPartyAddress_mpt vl_PDUAddress;
+
+    vl_PDUAddress := dec_PDU_SCCP_Address_mpt( pl_PDUAddress.addr );
+
+    vl_ASPAddress.addressIndicator.pointCodeIndic   :=
+      vl_PDUAddress.addressIndicator.pointCodeIndic;
+
+    vl_ASPAddress.addressIndicator.ssnIndicator     :=
+      vl_PDUAddress.addressIndicator.ssnIndicator;
+
+    vl_ASPAddress.addressIndicator.globalTitleIndic :=
+      vl_PDUAddress.addressIndicator.globalTitleIndic;
+
+    vl_ASPAddress.addressIndicator.routingIndicator :=
+      vl_PDUAddress.addressIndicator.routingIndicator;
+
+    if (ispresent ( vl_PDUAddress.signPointCode)) {
+       vl_ASPAddress.signPointCode:= vl_PDUAddress.signPointCode;
+    }
+    else   {
+      vl_ASPAddress.signPointCode := omit;
+    }
+
+    if (ispresent (vl_PDUAddress.subsystemNumber )) {  //always suggested ...
+      vl_ASPAddress.subsystemNumber:= vl_PDUAddress.subsystemNumber;
+    }
+    else {
+      vl_ASPAddress.subsystemNumber:=omit;
+    }
+
+    if( ispresent( vl_PDUAddress.globalTitle)){
+      if  (ischosen (vl_PDUAddress.globalTitle.gti0001))
+      {
+        tmpGT.gti0001.natureOfAddress:=vl_PDUAddress.globalTitle.gti0001.natureOfAddress;
+        tmpGT.gti0001.oddeven:=vl_PDUAddress.globalTitle.gti0001.oddeven;
+        tmpGT.gti0001.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0001.globalTitleAddress;
+        vl_ASPAddress.globalTitle:=tmpGT;
+      }
+      else if  (ischosen (vl_PDUAddress.globalTitle.gti0010))
+      {
+        tmpGT.gti0010.translationType:=vl_PDUAddress.globalTitle.gti0010.translationType;
+        tmpGT.gti0010.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0010.globalTitleAddress;
+        vl_ASPAddress.globalTitle:=tmpGT;
+      }
+      else if  (ischosen (vl_PDUAddress.globalTitle.gti0011))
+      {
+        tmpGT.gti0011.translationType   :=vl_PDUAddress.globalTitle.gti0011.translationType;
+        tmpGT.gti0011.encodingScheme    :=vl_PDUAddress.globalTitle.gti0011.encodingScheme;
+        tmpGT.gti0011.numberingPlan     :=vl_PDUAddress.globalTitle.gti0011.numberingPlan;
+        tmpGT.gti0011.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0011.globalTitleAddress;
+        vl_ASPAddress.globalTitle     :=tmpGT;
+      }
+      else if  (ischosen (vl_PDUAddress.globalTitle.gti0100))
+      {
+        tmpGT.gti0100.translationType   :=vl_PDUAddress.globalTitle.gti0100.translationType;
+        tmpGT.gti0100.encodingScheme    :=vl_PDUAddress.globalTitle.gti0100.encodingScheme;
+        tmpGT.gti0100.numberingPlan     :=vl_PDUAddress.globalTitle.gti0100.numberingPlan;
+        tmpGT.gti0100.natureOfAddress   :=vl_PDUAddress.globalTitle.gti0100.natureOfAddress;
+        //tmpGT.gti0100.reserved:='00'B;
+        tmpGT.gti0100.globalTitleAddress:=vl_PDUAddress.globalTitle.gti0100.globalTitleAddress;
+        vl_ASPAddress.globalTitle     :=tmpGT;
+      };
+    }
+    else
+    {
+      vl_ASPAddress.globalTitle:= omit;
+    };
+
+    return vl_ASPAddress;
+  } //ConvertPDUEncodedAddressToASPAddress_mpt
+
+  //==================================================================
+  // MAIN CONVERSION FUNCTIONS:
+  //==================================================================
+
+  //******************************************************************
+  //  function ConvertASPAddressToEncodedAddress
+  //  converts ASP address structure to PDU address structure
+  //  THIS IS THE MAIN ENCODE FUNCTION (coordinator)
+  //******************************************************************
+
+  function ConvertASPAddressToEncodedAddress( in SCCP_PAR_Address pl_ASPAddress)
+    runs on SCCP_CT return SCCP_param_CPartyAddressEnc
+  {
+      var SCCP_param_CPartyAddressEnc vl_PDUAddressEncoded;
+      if( ( v_SCCPServiceType == mtp3_itu) or
+          ( v_SCCPServiceType == mtp3b_itu))
+      {
+         return  ConvertASPAddressToEncodedAddress_itu( pl_ASPAddress );
+      }
+      else if(  (v_SCCPServiceType == mtp3_ansi) or
+                (v_SCCPServiceType == mtp3b_ansi))
+      {
+        return ConvertASPAddressToEncodedAddress_ansi( pl_ASPAddress );
+      }
+      else if((v_SCCPServiceType == mtp3_ttc) or
+              (v_SCCPServiceType == mtp3b_ttc))
+      {
+        if( (v_SIO == '83'O) or (v_SIO == '43'O) or (v_SIO == 'C3'O) ) //ttc national
+        {
+          return ConvertASPAddressToEncodedAddress_ttc( pl_ASPAddress );
+        }
+        else
+        { //international == itu
+          return  ConvertASPAddressToEncodedAddress_itu( pl_ASPAddress );
+        }
+      }//if1
+      else if((v_SCCPServiceType == mtp3_mpt))
+      {
+        if( v_NI == 2 ) //mpt national
+        {
+          return ConvertASPAddressToEncodedAddress_mpt( pl_ASPAddress );
+        }
+        else
+        { //international == itu
+          return  ConvertASPAddressToEncodedAddress_itu( pl_ASPAddress );
+        }
+      }//if1
+      else {
+        log("Error in ConvertASPAddressToEncodedAddress: Unknown SCCPServiceType");
+        stop;
+      }
+      return vl_PDUAddressEncoded; // error!!!
+  }
+
+  //******************************************************************
+  // function ConvertPDUEncodedAddressToASPAddress
+  // converts Encoded PDU Address into sturctured ASP Address
+  // THIS IS THE MAIN DECODE FUNCTION (coordinator)
+  //******************************************************************
+
+
+  function ConvertPDUEncodedAddressToASPAddress( in SCCP_param_CPartyAddressEnc pl_PDUAddress)
+  runs on SCCP_CT return SCCP_PAR_Address
+  {
+    var SCCP_PAR_Address vl_dummyretval;
+
+    if( (v_SCCPServiceType == mtp3_itu) or
+        (v_SCCPServiceType == mtp3b_itu) )
+    {
+      return  ConvertPDUEncodedAddressToASPAddress_itu( pl_PDUAddress );
+    }
+    else if( (v_SCCPServiceType == mtp3_ansi) or
+             (v_SCCPServiceType == mtp3b_ansi) )
+    {
+      return  ConvertPDUEncodedAddressToASPAddress_ansi( pl_PDUAddress );
+    }
+    else if( (v_SCCPServiceType == mtp3_ttc) or
+             (v_SCCPServiceType == mtp3b_ttc)){
+      if( (v_SIO == '83'O) or (v_SIO == '43'O) or (v_SIO == 'C3'O) )
+      {
+        //ttc national
+        return ConvertPDUEncodedAddressToASPAddress_ttc( pl_PDUAddress );
+      }
+      else {
+        return  ConvertPDUEncodedAddressToASPAddress_itu( pl_PDUAddress );
+      }
+    }
+    else if((v_SCCPServiceType == mtp3_mpt))
+    {
+      if( v_NI == 2 ) //mpt national
+      {
+        return ConvertPDUEncodedAddressToASPAddress_mpt( pl_PDUAddress );
+      }
+      else
+      { //international == itu
+        return  ConvertPDUEncodedAddressToASPAddress_itu( pl_PDUAddress );
+      }
+    }
+    else {
+      log("Error in function ConvertPDUEncodedAddressToASPAddress, Unknown SCCPSCCPType");
+      stop;
+    }
+    return vl_dummyretval;
+  }//ConvertPDUEncodedAddressToASPAddress
+/*
+//*************************************************************************
+//*************************************************************************
+//EncDec ComponentBehaviour
+//*************************************************************************
+//*************************************************************************
+
+  // TO DO:Desk check it! As I see, it's OK, but the meaning has been changed\
+  // because structure of PDU_SCCP has been changed
+
+  //*************************************************************************
+  function ScanRAWPorts()  runs on SCCP_EncDec_CT
+  //*************************************************************************
+  {
+    //local declarations
+  var  ASP_MTP3_TRANSFERind vl_ASP_MTP3_TRANSFERind;
+  var  ASP_MTP3_TRANSFERreq vl_ASP_MTP3_TRANSFERreq;
+  var  ASP_MTP3_TRANSFERreq_sccp vl_ASP_MTP3_TRANSFERreq_sccp
+
+  var  PDU_SCCP   vl_PDU_SCCP;
+  var  integer    vl_msg_type;
+
+  while (true)
+  {
+    alt
+    {
+
+    //********************************************************************
+    //message received from SCCP , containing a PDU to be encoded
+    //********************************************************************
+
+      []MTP3_SCCP_SP_PORT.receive( tr_ASP_MTP3_TRANSFERreq_sccp) -> value vl_ASP_MTP3_TRANSFERreq_sccp
+        {
+          var bitstring vl_sio_bit := oct2bit(vl_ASP_MTP3_TRANSFERreq_sccp.sio);
+          var MTP3_Field_sio vl_sio_struct;
+          vl_sio_struct.ni := substr(vl_sio_bit,0,2);
+          vl_sio_struct.prio := substr(vl_sio_bit,2,2);
+          vl_sio_struct.si := substr(vl_sio_bit,4,4);
+
+          MTP3_PORT.send(t_ASP_MTP3_TRANSFERreq(
+            vl_sio_struct,
+            vl_ASP_MTP3_TRANSFERreq_sccp.opc,
+            vl_ASP_MTP3_TRANSFERreq_sccp.dpc,
+            vl_ASP_MTP3_TRANSFERreq_sccp.sls,
+            enc_PDU_SCCP(vl_ASP_MTP3_TRANSFERreq_sccp.data)
+          ));
+        }
+
+      //********************************************************************
+      //message received from MTP3 , containing an octetstring to be decoded:
+      //********************************************************************
+
+      []MTP3_PORT.receive(tr_ASP_MTP3_TRANSFERind) -> value  vl_ASP_MTP3_TRANSFERind
+        {//startStatementBlock
+          if (vl_ASP_MTP3_TRANSFERind.sio.si != '0011'B)
+          {
+            log("The received message is not SCCP. Ignored.");
+            repeat;
+          }
+          vl_msg_type:= oct2int( vl_ASP_MTP3_TRANSFERind.data[0] );
+
+          select(vl_msg_type)
+          {
+            case (xudt)  // '11'O
+            {
+              vl_PDU_SCCP:=dec_PDU_SCCP(vl_ASP_MTP3_TRANSFERind.data);
+              MTP3_SCCP_SP_PORT.send( vl_PDU_SCCP.extudata );
+            }
+            case (udt) //'09'O
+            {
+              //decode octetstring
+              vl_PDU_SCCP:=dec_PDU_SCCP(vl_ASP_MTP3_TRANSFERind.data);
+
+              MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_Unitdata(
+                    vl_PDU_SCCP.unitdata.protClass,
+                    vl_PDU_SCCP.unitdata.calledPAddress,
+                    vl_PDU_SCCP.unitdata.callingPAddress,
+                    vl_PDU_SCCP.unitdata.data));
+
+            }//endif
+            case (dt1)//'06'O
+            {
+              vl_PDU_SCCP:=dec_PDU_SCCP(vl_ASP_MTP3_TRANSFERind.data);
+
+              MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_DataForm1(
+                  vl_PDU_SCCP.dataform1.destLocRef,
+                  vl_PDU_SCCP.dataform1.segmentingReassembl,
+                  vl_PDU_SCCP.dataform1.data
+                  ));
+            }
+            case (cr) //'01'O
+            {//startif
+              vl_PDU_SCCP:=dec_PDU_SCCP(vl_ASP_MTP3_TRANSFERind.data);
+
+              if (ispresent(vl_PDU_SCCP.connrequest.eop))
+              {
+                MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_ConnectionRequest(
+                      vl_PDU_SCCP.connrequest.sourceLocRef,
+                      vl_PDU_SCCP.connrequest.protClass,
+                      vl_PDU_SCCP.connrequest.calledPAddress,
+                      vl_PDU_SCCP.connrequest.optionalPart.credit,
+                      vl_PDU_SCCP.connrequest.optionalPart.callingPAddress,
+                      vl_PDU_SCCP.connrequest.optionalPart.data,
+                      vl_PDU_SCCP.connrequest.optionalPart.hopCounter,
+                      vl_PDU_SCCP.connrequest.optionalPart.importance,
+                      vl_PDU_SCCP.connrequest.eop
+                ));
+              }
+              else
+              {
+                MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_ConnectionRequest(
+                      vl_PDU_SCCP.connrequest.sourceLocRef,
+                      vl_PDU_SCCP.connrequest.protClass,
+                      vl_PDU_SCCP.connrequest.calledPAddress,
+                      vl_PDU_SCCP.connrequest.optionalPart.credit,
+                      vl_PDU_SCCP.connrequest.optionalPart.callingPAddress,
+                      vl_PDU_SCCP.connrequest.optionalPart.data,
+                      vl_PDU_SCCP.connrequest.optionalPart.hopCounter,
+                      vl_PDU_SCCP.connrequest.optionalPart.importance,
+                      omit
+                ));
+              }
+
+            }
+            case (cc) //'02'O
+            {
+              vl_PDU_SCCP:=dec_PDU_SCCP(vl_ASP_MTP3_TRANSFERind.data);
+
+              if (ispresent(vl_PDU_SCCP.connconfirm.eop))
+              {
+                MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_ConnectionConfirm(
+                      vl_PDU_SCCP.connconfirm.destLocRef,
+                      vl_PDU_SCCP.connconfirm.sourceLocRef,
+                      vl_PDU_SCCP.connconfirm.protClass,
+                      vl_PDU_SCCP.connconfirm.optionalPart.credit,
+                      vl_PDU_SCCP.connconfirm.optionalPart.calledPAddress,
+                      vl_PDU_SCCP.connconfirm.optionalPart.data,
+                      vl_PDU_SCCP.connconfirm.optionalPart.importance,
+                      vl_PDU_SCCP.connconfirm.eop                  ));
+              }
+              else
+              {
+                MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_ConnectionConfirm(
+                      vl_PDU_SCCP.connconfirm.destLocRef,
+                      vl_PDU_SCCP.connconfirm.sourceLocRef,
+                      vl_PDU_SCCP.connconfirm.protClass,
+                      vl_PDU_SCCP.connconfirm.optionalPart.credit,
+                      vl_PDU_SCCP.connconfirm.optionalPart.calledPAddress,
+                      vl_PDU_SCCP.connconfirm.optionalPart.data,
+                      vl_PDU_SCCP.connconfirm.optionalPart.importance,
+                      omit));
+              }
+
+            }
+            case (udts) //'0A'O
+          {//startif
+            vl_PDU_SCCP:=dec_PDU_SCCP(vl_ASP_MTP3_TRANSFERind.data);
+
+            MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_UnitdataService(
+                  vl_PDU_SCCP.udataserv.returnCause,
+                  vl_PDU_SCCP.udataserv.calledPAddress,
+                  vl_PDU_SCCP.udataserv.callingPAddress,
+                  vl_PDU_SCCP.udataserv.data));
+
+          }//endif
+            case (rlsd) //'04'O
+            {
+              vl_PDU_SCCP:=dec_PDU_SCCP(vl_ASP_MTP3_TRANSFERind.data);
+
+              if (ispresent(vl_PDU_SCCP.released.eop))
+              {
+                MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_Released(
+                      vl_PDU_SCCP.released.destLocRef,
+                      vl_PDU_SCCP.released.sourceLocRef,
+                      vl_PDU_SCCP.released.releaseCause,
+                      vl_PDU_SCCP.released.optionalPart.data,
+                      vl_PDU_SCCP.released.optionalPart.importance,
+                      vl_PDU_SCCP.released.eop
+                      ));
+              }
+              else
+              {
+                MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_Released(
+                      vl_PDU_SCCP.released.destLocRef,
+                      vl_PDU_SCCP.released.sourceLocRef,
+                      vl_PDU_SCCP.released.releaseCause,
+                      vl_PDU_SCCP.released.optionalPart.data,
+                      vl_PDU_SCCP.released.optionalPart.importance,
+                      omit
+                      ));
+              }
+
+            }
+            case (err)//'0F'O
+            {
+              vl_PDU_SCCP:=dec_PDU_SCCP(vl_ASP_MTP3_TRANSFERind.data);
+
+              MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_ProtDataUnitError(
+                    vl_PDU_SCCP.pduerror.destLocRef,
+                    vl_PDU_SCCP.pduerror.errorCause
+                     ));
+            }
+            case (rlc)//'05'O
+            {
+              vl_PDU_SCCP:=dec_PDU_SCCP(vl_ASP_MTP3_TRANSFERind.data);
+
+              MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_ReleaseComplete(
+                    vl_PDU_SCCP.relcomp.destLocRef,
+                    vl_PDU_SCCP.relcomp.sourceLocRef
+                    ));
+            }
+            case (it)//'10'O
+            {
+                vl_PDU_SCCP:=dec_PDU_SCCP(vl_ASP_MTP3_TRANSFERind.data);
+
+                MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_InactivityTest(
+                    vl_PDU_SCCP.inacttest.destLocRef,
+                    vl_PDU_SCCP.inacttest.sourceLocRef,
+                    vl_PDU_SCCP.inacttest.protClass,
+                    vl_PDU_SCCP.inacttest.sequencingSegmenting,
+                    vl_PDU_SCCP.inacttest.credit
+                    ));
+            }
+            case (rsr)//'0D'O
+            {
+              vl_PDU_SCCP:=dec_PDU_SCCP(vl_ASP_MTP3_TRANSFERind.data);
+
+              MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_ResetRequest(
+                    vl_PDU_SCCP.resetreq.destLocRef,
+                    vl_PDU_SCCP.resetreq.sourceLocRef,
+                    vl_PDU_SCCP.resetreq.resetCause
+                    ));
+            }
+            case (rsc)//'0E'O
+            {
+
+              vl_PDU_SCCP:=dec_PDU_SCCP(vl_ASP_MTP3_TRANSFERind.data);
+
+              MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_ResetConfirm(
+                    vl_PDU_SCCP.resconf.destLocRef,
+                    vl_PDU_SCCP.resconf.sourceLocRef
+                    ));
+            }//endif
+            case (cref)//'03'O
+            {
+              vl_PDU_SCCP:=dec_PDU_SCCP(vl_ASP_MTP3_TRANSFERind.data);
+
+              if (ispresent(vl_PDU_SCCP.connrefused.eop))
+              {
+                MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_ConnectionRefused(
+                    vl_PDU_SCCP.connrefused.destLocRef,
+                    vl_PDU_SCCP.connrefused.refusalCause,
+                    vl_PDU_SCCP.connrefused.optionalPart.calledPAddress,
+                    vl_PDU_SCCP.connrefused.optionalPart.data,
+                    vl_PDU_SCCP.connrefused.optionalPart.importance,
+                    vl_PDU_SCCP.connrefused.eop
+                    ));
+              }
+              else
+              {
+                MTP3_SCCP_SP_PORT.send( t_PDU_SCCP_ConnectionRefused(
+                    vl_PDU_SCCP.connrefused.destLocRef,
+                    vl_PDU_SCCP.connrefused.refusalCause,
+                    vl_PDU_SCCP.connrefused.optionalPart.calledPAddress,
+                    vl_PDU_SCCP.connrefused.optionalPart.data,
+                    vl_PDU_SCCP.connrefused.optionalPart.importance,
+                    omit
+                    ));
+              }
+            }
+            case (xudts,ludt,ludts)
+            {
+              log ("Unsupported connectionless message ((-XUDT or))  XUDTS or LUDT or LUDTS - received and discarded");
+            }
+            case (dt2,ak,ed,ea )
+            {
+              log ("Unsupported connection-oriented  message -DT2 or AK or ED or EA - received and discarded");
+            }
+            case else { log ("Unrecognized message received and discarded"); }
+          }
+        }//endStatementBlock
+
+      }//endalt
+
+    }//endwhile
+
+  }//endfunction
+*/
+
+//******************************************************************
+//
+//    working functions for ScanEvents
+//
+//******************************************************************
+
+//******************************************************************
+//    Part 1 :  Receiving msg on port "MTP3_SCCP_PORT"
+//******************************************************************
+
+
+  //******************************************************************
+  //  processing_PDU_SCCP_Unitdata
+  //******************************************************************
+  function processing_PDU_SCCP_Unitdata( in PDU_SCCP_Unitdata pl_PDU_SCCP_Unitdata)
+  runs on SCCP_CT
+  {
+    //var   PDU_SCCP_Unitdata vl_PDU_SCCP_Unitdata;
+    var   PDU_SCCP          vl_PDU_SCCP;
+    var   ASP_SCCP_N_UNITDATA_ind    vl_N_UNITDATA_ind;
+
+    vl_PDU_SCCP.unitdata:= pl_PDU_SCCP_Unitdata;
+
+    // it should be decoded to structure to read if it is a mgmt message or not
+    vl_N_UNITDATA_ind.calledAddress :=
+      ConvertPDUEncodedAddressToASPAddress(pl_PDU_SCCP_Unitdata.calledPAddress);
+
+    if ( ispresent(vl_N_UNITDATA_ind.calledAddress.subsystemNumber)  and
+      vl_N_UNITDATA_ind.calledAddress.subsystemNumber != cg_SSN_sCCPmanagement)
+    //SCCP mgmt message
+    {//startif1
+
+      //no SCCP or node congestion assumed
+      //'route on SSN' assumed
+
+      //subsystems are assumed equipped and available
+      //as the message is received from MTP3 , DPC is assumed to be matching the PC of the own node without
+      // any further checks
+
+      //assemble ASP_SCCP_N_
+      vl_N_UNITDATA_ind.callingAddress:=
+        ConvertPDUEncodedAddressToASPAddress(pl_PDU_SCCP_Unitdata.callingPAddress);
+
+      // Wrong old:
+      //vl_N_UNITDATA_ind.sequenceControl:=
+      //  '0000000'B&pl_PDU_SCCP_Unitdata.protClass.class[0]; // Q.713/3.6  0.bit=1=>seq msb???
+
+      vl_N_UNITDATA_ind.sequenceControl:=
+        '0000000'B&pl_PDU_SCCP_Unitdata.protClass.class[3];
+
+      if( pl_PDU_SCCP_Unitdata.protClass.messageHandling == '1000'B )
+      { vl_N_UNITDATA_ind.returnOption   := '00000001'B; }
+      else
+      { vl_N_UNITDATA_ind.returnOption   := '00000000'B; }
+
+      //connectionless-class 0 or 1
+      //protocol class 0- SCCP_sequence_ctrl_off
+      //protocol class 1- SCCP_sequence_ctrl_on
+      // wrong: vl_N_UNITDATA_ind.returnOption       :='0000000'B&pl_PDU_SCCP_Unitdata.protClass.messageHandling[3];
+
+      //only two values( '0000'B -no special options
+      //and   '1000'B -return message on error) assumed
+      //octetstring                          vs.   length+octetstring
+      vl_N_UNITDATA_ind.userData         :=pl_PDU_SCCP_Unitdata.data.data;
+      vl_N_UNITDATA_ind.importance := omit;
+      SCCP_SP_PORT.send( vl_N_UNITDATA_ind );
+
+
+    }//endif1
+    else { //startelse1-SCCPmanagement message
+
+      log ("SCCP management message received");
+      var octetstring  vl_data;
+      vl_data:=pl_PDU_SCCP_Unitdata.data.data;
+
+      vl_PDU_SCCP.unitdata.messageType:=udt ;
+      vl_PDU_SCCP.unitdata.calledPAddress:=pl_PDU_SCCP_Unitdata.callingPAddress;
+      vl_PDU_SCCP.unitdata.callingPAddress:=pl_PDU_SCCP_Unitdata.calledPAddress;
+
+      if ((vl_data[0]=='03'O) and                       //SST message
+          ((v_SSN==0) or (oct2int(vl_data[1])==v_SSN))) //right SSN
+      {//startif2
+
+        //send Unitdata with SSA
+        vl_PDU_SCCP.unitdata.data.data[0]:='01'O;//Change to SSA
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+            (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Unitdata_SSA
+
+      }//endif2
+      else if ((vl_data[0]=='02'O) and                       //SSP message
+               ((v_SSN==0) or (oct2int(vl_data[1])==v_SSN))) //right SSN
+      {//startif2
+
+        //send Unitdata with SST
+        vl_PDU_SCCP.unitdata.data.data[0]:='03'O;//Change to SST
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+            (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Unitdata_SST
+
+      }//endif2
+      else if ((vl_data[0]=='01'O) and                        //SSA message
+               ((v_SSN==0) or (oct2int(vl_data[1])==v_SSN)))  //right SSN
+      {//startif2
+
+        //send Unitdata with SS
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+          (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP ));//send Unitdata_SSA
+
+      }//endif2
+      else
+      {
+        log("Unsupported (or containing inconsistent SSN)SCCP management message  received and discarded")
+      }
+    }//endelse1
+    return;
+  } // processing_PDU_SCCP_Unitdata()
+
+  //******************************************************************
+  //  processing_PDU_SCCP_UnitdataService
+  //******************************************************************
+  function processing_PDU_SCCP_UnitdataService( in PDU_SCCP_UnitdataService pl_PDU_SCCP_UnitdataService )
+  runs on SCCP_CT
+  {
+
+    var ASP_SCCP_N_NOTICE_ind  vl_N_NOTICE_ind;
+
+    //no SCCP or node congestion assumed
+    //'route on SSN' assumed
+
+    //subsystems are assumed equipped and available
+    //as the message is received from MTP3 , DPC is assumed to be the PC of the own node without
+    // any further checks
+
+    //assemble ASP_SCCP_N_
+
+    vl_N_NOTICE_ind.calledAddress :=ConvertPDUEncodedAddressToASPAddress(pl_PDU_SCCP_UnitdataService.calledPAddress );
+    vl_N_NOTICE_ind.callingAddress:=ConvertPDUEncodedAddressToASPAddress(pl_PDU_SCCP_UnitdataService.callingPAddress);
+    //one to one mapping between reasonForReturn and returnCause -Q713 A5
+    vl_N_NOTICE_ind.reasonForReturn  := pl_PDU_SCCP_UnitdataService.returnCause   ;
+    vl_N_NOTICE_ind.userData         := pl_PDU_SCCP_UnitdataService.data.data   ;
+
+    SCCP_SP_PORT.send( t_ASP_N_NOTICE_ind(
+      vl_N_NOTICE_ind.calledAddress ,
+      vl_N_NOTICE_ind.callingAddress,
+      vl_N_NOTICE_ind.reasonForReturn,
+      vl_N_NOTICE_ind.userData ,
+      omit));
+
+  }// processing_PDU_SCCP_UnitdataService
+
+
+  //******************************************************************
+  //   processing_PDU_SCCP_ConnectionRequest
+  //******************************************************************
+  function processing_PDU_SCCP_ConnectionRequest( in PDU_SCCP_ConnectionRequest pl_PDU_SCCP_ConnectionRequest)
+  runs on SCCP_CT
+  {
+    //no SCCP or node congestion assumed
+    //we assume that routing is done on SSN; we are in the dest.node
+    //SS is equipped and available
+
+    //check if connection already established
+    //local reference not assigned yet; search has to be done based on remote reference,
+    // to prevent erroneous situations
+    //for all other MTP3_ASPs, search is done based on destLocRef, containing the local
+    //reference sent to the neighbouring node
+
+    if (ConnectionAlreadyEstablished_remote(pl_PDU_SCCP_ConnectionRequest.sourceLocRef))
+    {//startif3
+      v_session :=Retrieve_session_remote(pl_PDU_SCCP_ConnectionRequest.sourceLocRef);
+      //Action Table follows
+
+      if (ConnectionTable[v_session].state==idle)
+      { log("CR received with reference for an already established conn. in state:idle");}//no source ref known
+      else if (ConnectionTable[v_session].state==active)
+      { log("CR received with reference for an already established conn. in state:active");}
+      else if (ConnectionTable[v_session].state==reset_bothway)
+      { log("CR received with reference for an already established conn. in state:reset_bothway");}
+      else if (ConnectionTable[v_session].state==connection_pending_IC)
+      { log("CR received with reference for an already established conn. in state:connection_pending_IC");}
+      //discard message, return
+      else if (ConnectionTable[v_session].state==disconnect_pending)
+      { log("CR received with reference for an already established conn. in state:disconnect_pending");}//discard message, return
+      else if (ConnectionTable[v_session].state==reset_IC) {//startif4
+        //discard received message
+        f_StartTimer(internal_reset,v_session,0.0);//the dummy timer times out immediately
+        //state changed to active
+        ConnectionTable[v_session].state:=active;
+
+      }//endif4
+      else if (ConnectionTable[v_session].state==wait_conn_confirm)
+      {//startif4
+        //stop connection timer
+        f_StopTimer(conn_est,v_session);
+        //release resources
+        ReleaseResources(v_session);
+      }//endif4
+    }//endif3
+    else  {//startelse
+
+      //*************************************************************************
+      //connection not yet established  - new v_session
+      //check if resources available
+      v_session:=CheckIdleIndividuals()
+
+      //idle individual found  , resources available, 0<=v_session<=15
+      if ( v_session!=-1 )
+      {//startif3
+        //
+        ConnectionTable[v_session].localReference := GenerateLocalReference();
+        ConnectionTable[v_session].remoteReference:= pl_PDU_SCCP_ConnectionRequest.sourceLocRef;
+        //local reference assigned here!!(see Fig. C.3/Q714)
+
+        ConnectionTable[v_session].connectionId   := GenerateConnectionId();
+
+        //once local reference is assigned , a session is considered established
+        //determine protocol class
+        //assemble ASP_SCCP_N_
+        //start guard timer T_guard ;if no answer to ASP_SCCP_N_CONNECT_ind is received, timer will release
+
+        var ASP_SCCP_N_CONNECT_ind vl_N_CONNECT_ind;
+        f_StartTimer(t_guard,v_session);
+
+        vl_N_CONNECT_ind.calledAddress:=ConvertPDUEncodedAddressToASPAddress(pl_PDU_SCCP_ConnectionRequest.calledPAddress);
+
+        if (ispresent(pl_PDU_SCCP_ConnectionRequest.optionalPart))
+        {
+          if (ispresent(pl_PDU_SCCP_ConnectionRequest.optionalPart.callingPAddress))
+          {//startif4
+
+            //temporary variable to avoid type conversion problems
+            var SCCP_param_CPartyAddressEnc  vl_PDUAddress;
+            vl_PDUAddress.addr             := pl_PDU_SCCP_ConnectionRequest.optionalPart.callingPAddress.addr;
+            vl_PDUAddress.paramLength      := pl_PDU_SCCP_ConnectionRequest.optionalPart.callingPAddress.paramLength;
+            vl_N_CONNECT_ind.callingAddress:= ConvertPDUEncodedAddressToASPAddress(vl_PDUAddress);
+
+          }//endif4
+          else {vl_N_CONNECT_ind.callingAddress:=omit}
+
+          if (ispresent(pl_PDU_SCCP_ConnectionRequest.optionalPart.data))
+          {//startif4
+            //temporary variable to avoid type conversion problems
+            var SCCP_param_Data_opt  vl_SCCP_param_Data_opt;
+
+            vl_SCCP_param_Data_opt:=pl_PDU_SCCP_ConnectionRequest.optionalPart.data;
+            vl_N_CONNECT_ind.userData:=vl_SCCP_param_Data_opt.data;
+
+          }//endif4
+          else {vl_N_CONNECT_ind.userData:=omit}
+        }
+        else
+        {
+          vl_N_CONNECT_ind.callingAddress:=omit;
+          vl_N_CONNECT_ind.userData:=omit;
+        }
+
+        vl_N_CONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+
+        SCCP_SP_PORT.send( t_ASP_N_CONNECT_ind(
+          vl_N_CONNECT_ind.calledAddress,
+          vl_N_CONNECT_ind.callingAddress,
+          omit,
+          vl_N_CONNECT_ind.userData,  //ethcky
+          vl_N_CONNECT_ind.connectionId,
+          omit));//send ASP_SCCP_N_CONNECT_ind
+
+        //restart send inactivity timer (baat)
+        f_StopTimer(ias,v_session);//to avoid warnings
+        f_StartTimer(ias,v_session);
+        ConnectionTable[v_session].state:=connection_pending_IC;
+
+      }//endif3
+
+      //no idle individual found , no resources available , v_session=-1
+      if (v_session==-1)
+      {//startif3
+
+        var  PDU_SCCP vl_PDU_SCCP;
+        //assemble and route MTP3 ASP
+        vl_PDU_SCCP.connrefused.messageType:=cref;
+        vl_PDU_SCCP.connrefused.destLocRef:=pl_PDU_SCCP_ConnectionRequest.sourceLocRef;
+        vl_PDU_SCCP.connrefused.refusalCause:=1;//End user congestion
+        vl_PDU_SCCP.connrefused.pointer1:=0;// No options
+        vl_PDU_SCCP.connrefused.optionalPart:=omit;
+        vl_PDU_SCCP.connrefused.eop:=omit;
+        MTP3_SCCP_PORT.send ( t_ASP_MTP3_TRANSFERreq_sccp
+          (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Connection refused, no idle individuals
+        //return to idle
+      }//endif3
+    }//endelse
+
+  }//processing_PDU_SCCP_ConnectionRequest
+
+//******************************************************************
+//  processing_PDU_SCCP_ConnectionConfirm
+//******************************************************************
+  function processing_PDU_SCCP_ConnectionConfirm( in PDU_SCCP_ConnectionConfirm pl_PDU_SCCP_ConnectionConfirm)
+  runs on SCCP_CT
+  {
+    var PDU_SCCP        vl_PDU_SCCP;
+    var ASP_SCCP_N_CONNECT_cfm   vl_N_CONNECT_cfm;
+
+    log(pl_PDU_SCCP_ConnectionConfirm);
+
+    //check if connection already established
+    if (ConnectionAlreadyEstablished(pl_PDU_SCCP_ConnectionConfirm.destLocRef))
+    {//startif2
+      v_session :=Retrieve_session(pl_PDU_SCCP_ConnectionConfirm.destLocRef);
+      //Action Table follows
+      if (ConnectionTable[v_session].state==idle)
+      {
+        //assemble and route MTP3_ASP
+
+        vl_PDU_SCCP.pduerror.messageType:=err;
+        vl_PDU_SCCP.pduerror.destLocRef:=ConnectionTable[v_session].remoteReference;
+        vl_PDU_SCCP.pduerror.errorCause:=cg_Err_unassignedDestinationLRN;
+
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Error
+        //then return to idle
+      }
+      else if (ConnectionTable[v_session].state==connection_pending_IC)
+      { log("CC received in state:connection_pending_IC"); }//discard message, return
+      else if (ConnectionTable[v_session].state==disconnect_pending)
+      { log("CC received in state:disconnect_pending"); }//discard message, return
+      else if (ConnectionTable[v_session].state==active)
+      { log("CC received in state:active"); }//do nothing, return
+      else if (ConnectionTable[v_session].state==reset_bothway)
+      { log("CC received in state:reset_bothway"); }//
+      else if (ConnectionTable[v_session].state==connection_pending_OG)
+      {//startif3
+        //stop connection timer
+        f_StopTimer(conn_est,v_session);
+        //start inactivity timers
+        f_StartTimer(ias,v_session);
+        f_StartTimer(iar,v_session);
+        //assign protocol class:=2, associate remote reference
+        ConnectionTable[v_session].remoteReference:=pl_PDU_SCCP_ConnectionConfirm.sourceLocRef;
+        //assemble ASP_SCCP_N_
+        vl_N_CONNECT_cfm.connectionId:=ConnectionTable[v_session].connectionId;
+
+        SCCP_SP_PORT.send( t_ASP_N_CONNECT_cfm(
+            omit,
+            omit,
+            omit,
+            vl_N_CONNECT_cfm.connectionId,
+            omit
+            ));//send ASP_SCCP_N_CONNECT_confirm
+
+        ConnectionTable[v_session].state:=active;
+      }//endif3
+      else if (ConnectionTable[v_session].state==wait_conn_confirm)//connection is confirmed ,
+        // but it has meanwhile been disconnected by the user
+      {//startif3
+        //stop connection timer
+        f_StopTimer(conn_est,v_session);
+        //associate remote reference to connection
+        ConnectionTable[v_session].remoteReference:=pl_PDU_SCCP_ConnectionConfirm.sourceLocRef;
+        //assemble and route MTP3_ASP
+        vl_PDU_SCCP.released.messageType:=rlsd;
+        vl_PDU_SCCP.released.destLocRef:=ConnectionTable[v_session].remoteReference;
+        vl_PDU_SCCP.released.sourceLocRef:=ConnectionTable[v_session].localReference;
+        vl_PDU_SCCP.released.releaseCause:=cg_DISC_normal;
+        vl_PDU_SCCP.released.pointer1:=0;//No options
+        vl_PDU_SCCP.released.optionalPart:=omit;
+        vl_PDU_SCCP.released.eop:=omit;
+
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+          (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Released
+        //start release timer
+        f_StartTimer(rel,v_session);
+        ConnectionTable[v_session].state:=disconnect_pending;
+      }//endif3
+      else if (ConnectionTable[v_session].state==reset_IC)
+      {//startif3
+        //discard received message
+        f_StartTimer(internal_reset,v_session,0.0);//the timer times out immediately
+        //state changed to active
+        ConnectionTable[v_session].state:=active;
+
+      }//endif3
+      else { log("CC received in an unexpected state");  }
+    }//endif2
+    else {//startelse -Connection confirm  received with destLocRef  not in ConnectionTable
+      //send ERR
+
+      vl_PDU_SCCP.pduerror.messageType:=err;
+      vl_PDU_SCCP.pduerror.destLocRef:=pl_PDU_SCCP_ConnectionConfirm.sourceLocRef;
+      vl_PDU_SCCP.pduerror.errorCause:=cg_Err_unassignedDestinationLRN;
+
+      MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Error
+    }//endelse
+
+  }//processing_PDU_SCCP_ConnectionConfirm
+
+  //******************************************************************
+  //  processing_PDU_SCCP_Released
+  //******************************************************************
+  function processing_PDU_SCCP_Released( in PDU_SCCP_Released pl_PDU_SCCP_Released)
+  runs on SCCP_CT
+  {
+    var PDU_SCCP vl_PDU_SCCP;
+    var ASP_SCCP_N_DISCONNECT_ind  vl_N_DISCONNECT_ind;
+
+    //Store data parameter
+    var template SCCP_PAR_UserData tl_data := omit;
+    if (ispresent(pl_PDU_SCCP_Released.optionalPart))
+    {
+      if (ispresent(pl_PDU_SCCP_Released.optionalPart.data))
+      {
+         tl_data := pl_PDU_SCCP_Released.optionalPart.data.data;
+      }
+    }
+
+    //check if connection already established
+    if (ConnectionAlreadyEstablished(pl_PDU_SCCP_Released.destLocRef))
+    {//startif1
+      v_session :=Retrieve_session(pl_PDU_SCCP_Released.destLocRef);
+      //check if remote reference is correct -Table B.2 /Q.714
+      if (ConnectionTable[v_session].remoteReference==pl_PDU_SCCP_Released.sourceLocRef)
+      {//startif2
+        //Action Table follows
+        if (ConnectionTable[v_session].state==idle)//C.3- 1/6  ????nem valoszinu hogy ez eloallhat
+        {//startif3
+
+          //assemble and route MTP3_ASP
+          vl_PDU_SCCP.relcomp.messageType:=rlc;
+          vl_PDU_SCCP.relcomp.destLocRef:=ConnectionTable[v_session].remoteReference;
+          vl_PDU_SCCP.relcomp.sourceLocRef:=ConnectionTable[v_session].localReference;
+
+          MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+            (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Release complete
+            //then return to idle
+        }//endif3
+        else if (ConnectionTable[v_session].state==connection_pending_IC)
+        { log("RLSD received in state:connection_pending_IC");}//discard message, return
+        else if (ConnectionTable[v_session].state==disconnect_pending)
+        { log("RLSD received in state:disconnect_pending");}//discard message, return
+        else if (ConnectionTable[v_session].state==active)
+        {//startif3
+          //assemble ASP_SCCP_N_
+          vl_N_DISCONNECT_ind.originator:=cg_Mapping_RelCause_Orig[pl_PDU_SCCP_Released.releaseCause];
+          vl_N_DISCONNECT_ind.reason:=cg_Mapping_RelCause_Reason[pl_PDU_SCCP_Released.releaseCause];
+          vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+
+          SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            tl_data,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+            ));//send ASP_SCCP_N_DISCONNECT_ind
+          //assemble and route MTP3_ASP
+
+          vl_PDU_SCCP.relcomp.messageType :=rlc;
+          vl_PDU_SCCP.relcomp.destLocRef  :=pl_PDU_SCCP_Released.sourceLocRef;
+          vl_PDU_SCCP.relcomp.sourceLocRef:=pl_PDU_SCCP_Released.destLocRef;
+
+          MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+            (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Release complete
+
+          //release resources
+          ReleaseResources(v_session);
+        }//endif3
+        else if (ConnectionTable[v_session].state==connection_pending_OG)
+        {//startif3
+          //assemble and route MTP3_ASP
+          vl_PDU_SCCP.relcomp.messageType :=rlc;
+          vl_PDU_SCCP.relcomp.destLocRef  :=pl_PDU_SCCP_Released.sourceLocRef;
+          vl_PDU_SCCP.relcomp.sourceLocRef:=pl_PDU_SCCP_Released.destLocRef;
+          MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+            (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Release complete
+
+          //stop connection timer
+          f_StopTimer(conn_est,v_session);
+          //assemble ASP_SCCP_N_
+
+          vl_N_DISCONNECT_ind.originator  :=cg_Mapping_RelCause_Orig[pl_PDU_SCCP_Released.releaseCause];
+          vl_N_DISCONNECT_ind.reason      :=cg_Mapping_RelCause_Reason[pl_PDU_SCCP_Released.releaseCause];
+          vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+
+          SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            tl_data,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+            ));//send ASP_SCCP_N_DISCONNECT_ind
+           //release resources
+           ReleaseResources(v_session);
+
+        }//endif3
+        else if (ConnectionTable[v_session].state==wait_conn_confirm)
+        {//startif3
+          //assemble and route MTP3_ASP
+          vl_PDU_SCCP.relcomp.messageType  :=rlc;
+          vl_PDU_SCCP.relcomp.destLocRef   :=pl_PDU_SCCP_Released.sourceLocRef;
+          vl_PDU_SCCP.relcomp.sourceLocRef :=pl_PDU_SCCP_Released.destLocRef;
+          MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+            (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Release complete
+          //stop connection timer
+          f_StopTimer(conn_est,v_session);
+          //release resources
+          ReleaseResources(v_session);
+        }//endif3
+        else if (ConnectionTable[v_session].state==reset_IC)
+        {//startif3
+          //assemble ASP_SCCP_N_
+          vl_N_DISCONNECT_ind.originator:=cg_Mapping_RelCause_Orig[pl_PDU_SCCP_Released.releaseCause];
+          vl_N_DISCONNECT_ind.reason  :=cg_Mapping_RelCause_Reason[pl_PDU_SCCP_Released.releaseCause];
+          vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+          SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            tl_data,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+            ));//send ASP_SCCP_N_DISCONNECT_ind
+
+          //release resources, stop inactivity timers, change state to idle
+          ReleaseResources(v_session);
+        }//endif3
+        else if (ConnectionTable[v_session].state==reset_bothway)
+        {//startif3
+          //assemble ASP_SCCP_N_
+
+          vl_N_DISCONNECT_ind.originator:=cg_Mapping_RelCause_Orig[pl_PDU_SCCP_Released.releaseCause];
+          vl_N_DISCONNECT_ind.reason :=cg_Mapping_RelCause_Reason[pl_PDU_SCCP_Released.releaseCause];
+          vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+
+          SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            tl_data,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+            ));//send ASP_SCCP_N_DISCONNECT_ind
+
+          //release resources, stop inactivity timers, change state to idle
+          ReleaseResources(v_session);
+
+        }//endif3
+        else { log("RLSD received in an unexpected state");  }
+      }//endif2
+      else {//remote reference inconsistent, error action follows
+
+        vl_PDU_SCCP.pduerror.messageType:=err;
+        vl_PDU_SCCP.pduerror.destLocRef :=pl_PDU_SCCP_Released.sourceLocRef;
+        vl_PDU_SCCP.pduerror.errorCause :=cg_Err_inconsistentSourceLRN;
+
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+          (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Error
+      }//endelse
+    }//endif1
+    else   {//Released(Y,X) received with destLocRef  not in ConnectionTable
+    //send RLC(X,Y)
+
+      vl_PDU_SCCP.relcomp.messageType :=rlc;
+      vl_PDU_SCCP.relcomp.destLocRef  :=pl_PDU_SCCP_Released.sourceLocRef;
+      vl_PDU_SCCP.relcomp.sourceLocRef:=pl_PDU_SCCP_Released.destLocRef;
+
+      MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Release complete
+
+    }//endelse
+  }//processing_PDU_SCCP_Released
+
+  //******************************************************************
+  //  processing_PDU_SCCP_ProtDataUnitError
+  //******************************************************************
+  function processing_PDU_SCCP_ProtDataUnitError( in PDU_SCCP_ProtDataUnitError pl_PDU_SCCP_ProtDataUnitError)
+  runs on SCCP_CT
+  {
+    var PDU_SCCP vl_PDU_SCCP;
+    var ASP_SCCP_N_DISCONNECT_ind  vl_N_DISCONNECT_ind;
+
+    //check if connection already established
+    if (ConnectionAlreadyEstablished(pl_PDU_SCCP_ProtDataUnitError.destLocRef))
+    {//startif2
+      v_session :=Retrieve_session(pl_PDU_SCCP_ProtDataUnitError.destLocRef);
+      //Action Table follows
+
+      if (ConnectionTable[v_session].state==idle)
+      {//startif3
+        //assemble and route MTP3_ASP
+
+        vl_PDU_SCCP.pduerror.messageType:=err;
+        vl_PDU_SCCP.pduerror.destLocRef:=ConnectionTable[v_session].remoteReference;
+        vl_PDU_SCCP.pduerror.errorCause:=cg_Err_unassignedDestinationLRN;
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Error
+         //then return to idle
+
+      }//endif3
+      else if (ConnectionTable[v_session].state==disconnect_pending)
+      { log("PDUError received in state:disconnect_pending ");}//discard message, return
+      else if (ConnectionTable[v_session].state==connection_pending_IC)
+      { log("PDUError received in state:connection_pending_IC ");}//discard message, return
+      else if (ConnectionTable[v_session].state==reset_bothway)
+      {//startif3
+        //assemble ASP_SCCP_N_
+        vl_N_DISCONNECT_ind.originator  :=cg_Undefined;
+        vl_N_DISCONNECT_ind.reason      :=pl_PDU_SCCP_ProtDataUnitError.errorCause;//?
+        vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+        SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            omit,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+            ));//send ASP_SCCP_N_DISCONNECT_ind
+
+          //release resources, stop inactivity timers, change state to idle
+          ReleaseResources(v_session);
+      }//endif3
+      else if (ConnectionTable[v_session].state==active)
+      {//startif3
+        if (pl_PDU_SCCP_ProtDataUnitError.errorCause!=cg_Err_serviceClassMismatch)
+        {//startif4
+
+          //assemble ASP_SCCP_N_
+          vl_N_DISCONNECT_ind.originator:=cg_Undefined;
+          vl_N_DISCONNECT_ind.reason:=pl_PDU_SCCP_ProtDataUnitError.errorCause;//?
+          vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+
+          SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            omit,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+            ));//send ASP_SCCP_N_DISCONNECT_ind
+          //release resources
+          ReleaseResources(v_session);
+
+        }//endif4
+        else {//startelse -Service class mismatch
+
+          //assemble ASP_SCCP_N_
+
+          vl_N_DISCONNECT_ind.originator  :=cg_Undefined;
+          vl_N_DISCONNECT_ind.reason      :=pl_PDU_SCCP_ProtDataUnitError.errorCause;
+          vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+
+          SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+          vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            omit,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+              ));//send ASP_SCCP_N_DISCONNECT_ind
+
+           //stop inactivity timers
+          f_StopTimer(iar,v_session);
+          f_StopTimer(ias,v_session);
+          //send Released
+          //assemble and route MTP3_ASP
+
+          vl_PDU_SCCP.released.messageType:=rlsd;
+          vl_PDU_SCCP.released.destLocRef:=ConnectionTable[v_session].remoteReference;
+          vl_PDU_SCCP.released.sourceLocRef:=ConnectionTable[v_session].localReference;
+          vl_PDU_SCCP.released.releaseCause:=cg_Rel_inconsConnData;
+          vl_PDU_SCCP.released.pointer1:=0;//No optional part
+          vl_PDU_SCCP.released.optionalPart:=omit;
+          vl_PDU_SCCP.released.eop:=omit;
+
+          MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+            (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Released
+
+          //start release timer
+          f_StartTimer(rel,v_session);
+          //change state to diconnect pending
+          ConnectionTable[v_session].state:=disconnect_pending;
+
+        }//endelse
+
+      }//endif3
+      else if (ConnectionTable[v_session].state==connection_pending_OG)
+      {//startif3
+        //stop connection timer
+        f_StopTimer(conn_est,v_session);
+        //assemble ASP_SCCP_N_
+
+        vl_N_DISCONNECT_ind.originator  :=cg_Undefined;
+        vl_N_DISCONNECT_ind.reason      :=pl_PDU_SCCP_ProtDataUnitError.errorCause;
+        vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+
+        SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+          vl_N_DISCONNECT_ind.originator,
+          omit,
+          vl_N_DISCONNECT_ind.reason,
+          omit,
+          vl_N_DISCONNECT_ind.connectionId,
+          omit
+        ));//send ASP_SCCP_N_DISCONNECT_ind
+        //release resources
+        ReleaseResources(v_session);
+      }//endif3
+      else if (ConnectionTable[v_session].state==wait_conn_confirm)
+      {//startif3
+
+        //stop connection timer
+        f_StopTimer(conn_est,v_session);
+        //release resources
+        ReleaseResources(v_session);
+
+
+      }//endif3
+      else if (ConnectionTable[v_session].state==reset_IC)
+      {//startif3
+        //assemble ASP_SCCP_N_
+        vl_N_DISCONNECT_ind.originator:=cg_Undefined;
+        vl_N_DISCONNECT_ind.reason:=pl_PDU_SCCP_ProtDataUnitError.errorCause;
+        vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+        SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            omit,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+            ));//send ASP_SCCP_N_DISCONNECT_ind
+
+        //release resources, stop inactivity timers, change state to idle
+        ReleaseResources(v_session);
+
+      }//endif3
+      else { log("PDUError received in an unexpected state");  }
+    }//endif2
+    else {}//PDU_Error received with destLocRef  not in ConnectionTable
+
+  }//processing_PDU_SCCP_ProtDataUnitError
+
+  //******************************************************************
+  //  processing_PDU_SCCP_ReleaseComplete
+  //******************************************************************
+  function processing_PDU_SCCP_ReleaseComplete(in PDU_SCCP_ReleaseComplete pl_PDU_SCCP_ReleaseComplete)
+  runs on SCCP_CT
+  {
+    var ASP_SCCP_N_DISCONNECT_ind  vl_N_DISCONNECT_ind;
+
+    //check if connection already established
+    if (ConnectionAlreadyEstablished(pl_PDU_SCCP_ReleaseComplete.destLocRef))
+    {//startif1
+
+      v_session :=Retrieve_session(pl_PDU_SCCP_ReleaseComplete.destLocRef);
+      //check if remote reference is correct -Table B.2 /Q.714
+      if (ConnectionTable[v_session].remoteReference==pl_PDU_SCCP_ReleaseComplete.sourceLocRef)
+      {//startif2
+
+        //Action Table follows
+        if (ConnectionTable[v_session].state==idle)
+        { log("RLC received in state: idle"); }//C.3 1/6-do nothing-return to idle state
+        else if (ConnectionTable[v_session].state==connection_pending_IC)
+        { log("RLC received in state: connection_pending_IC"); }//discard message, return
+        else if (ConnectionTable[v_session].state==active)
+        { log("RLC received in state: active"); }//do nothing, return
+        else if (ConnectionTable[v_session].state==reset_bothway)
+        { log("RLC received in state:reset_bothway "); }//
+        else if (ConnectionTable[v_session].state==disconnect_pending)
+        {//startif3
+          log("RLC received in state:disconnect_pending ");
+          //log("release resources");
+          ReleaseResources(v_session);
+        }//endif3
+        else if (ConnectionTable[v_session].state==connection_pending_OG)
+        {//startif3
+          f_StopTimer(conn_est,v_session);
+          //assemble ASP_SCCP_N_
+          vl_N_DISCONNECT_ind.originator:=cg_NSU;
+          vl_N_DISCONNECT_ind.reason:=cg_DISC_normal;
+          vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+
+          SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            omit,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+            ));//send ASP_SCCP_N_DISCONNECT_ind
+          //release resources
+          ReleaseResources(v_session);
+        }//endif3
+        else if (ConnectionTable[v_session].state==wait_conn_confirm)
+        {//startif3
+          log("RLC received in state:wait_conn_confirm");
+          //stop connection timer
+          f_StopTimer(conn_est,v_session);
+          //release resources
+          ReleaseResources(v_session);
+        }//endif3
+        else if (ConnectionTable[v_session].state==reset_IC)
+        {//startif3
+          log("RLC received in state:reset_IC");
+          //discard received message
+          f_StartTimer(internal_reset,v_session,0.0);//the timer times out immediately
+          //state changed to active
+          ConnectionTable[v_session].state:=active;
+        }//endif3
+        else { log("RLC received in an unexpected state");  }
+
+      }//endif2
+      else {}//remote reference inconsistent, discard
+
+    }//endif1
+    else {}//Release complete received with destLocRef  not in ConnectionTable
+    //discard
+
+  }//processing_PDU_SCCP_ReleaseComplete
+
+  //******************************************************************
+  //  processing_PDU_SCCP_InactivityTest
+  //******************************************************************
+  function processing_PDU_SCCP_InactivityTest( in PDU_SCCP_InactivityTest pl_PDU_SCCP_InactivityTest)
+  runs on SCCP_CT
+  {
+    var PDU_SCCP vl_PDU_SCCP;
+    var ASP_SCCP_N_DISCONNECT_ind  vl_N_DISCONNECT_ind;
+
+    //check if connection already established
+    if (ConnectionAlreadyEstablished(pl_PDU_SCCP_InactivityTest.destLocRef))
+    {//startif1
+      v_session :=Retrieve_session(pl_PDU_SCCP_InactivityTest.destLocRef);
+
+      //check if remote reference is correct -Table B.2 /Q.714
+      if (ConnectionTable[v_session].remoteReference==pl_PDU_SCCP_InactivityTest.sourceLocRef)
+      {//startif2
+
+        //Action Table follows
+        if (ConnectionTable[v_session].state==idle)
+        { log("IT received in state :idle "); }//C.3 1/6-do nothing-return to idle state
+        else if (ConnectionTable[v_session].state==connection_pending_IC)
+        { log("IT received in state : connection_pending_IC"); }//discard message, return
+        else if (ConnectionTable[v_session].state==connection_pending_OG)
+        {//startif3
+
+          //stop connection timer
+          f_StopTimer(conn_est,v_session);
+          //assemble ASP_SCCP_N_
+          vl_N_DISCONNECT_ind.originator    := cg_NSU;
+          vl_N_DISCONNECT_ind.reason        := cg_DISC_normal;
+          vl_N_DISCONNECT_ind.connectionId  := ConnectionTable[v_session].connectionId;
+
+          SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            omit,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+            ));//send ASP_SCCP_N_DISCONNECT_ind
+          //release resources
+          ReleaseResources(v_session);
+
+        }//endif3
+        else if (ConnectionTable[v_session].state==disconnect_pending) {}
+        else if (ConnectionTable[v_session].state==reset_bothway) {}//
+        else if (ConnectionTable[v_session].state==active)
+        {//startif3
+           //source reference number assumed OK
+          //or:
+          //if (ConnectionTable[v_session].remoteReference!=pl_PDU_SCCP_InactivityTest.sourceLocRef)
+          // release connection
+          //protocol class assumed 2
+          //restart receive inactivity timer
+          f_StopTimer(iar,v_session);//to avoid warnings
+          f_StartTimer(iar,v_session);
+        }//endif3
+        else if (ConnectionTable[v_session].state==reset_IC)
+        {//startif3
+          //discard received message
+          f_StartTimer(internal_reset,v_session,0.0);//the timer times out immediately
+          //state changed to active
+          ConnectionTable[v_session].state:=active;
+        }//endif3
+        else if (ConnectionTable[v_session].state==wait_conn_confirm)
+        {//startif3
+
+          //stop connection timer
+          f_StopTimer(conn_est,v_session);
+          //release resources
+          ReleaseResources(v_session);
+
+        }//endif3
+        else { log("IT received in an unexpected state");  }
+      }//endif2
+      else {//remote reference inconsistent, error action follows
+            //message received with remote reference not the same as stored
+            // two RLSD messages are sent back, one to the sored and to the received remote reference
+            //sent first RLSD-see B.2/Q.714
+
+        vl_PDU_SCCP.released.messageType :=rlsd;
+        vl_PDU_SCCP.released.destLocRef  :=pl_PDU_SCCP_InactivityTest.sourceLocRef;
+        vl_PDU_SCCP.released.sourceLocRef:=pl_PDU_SCCP_InactivityTest.destLocRef;
+        vl_PDU_SCCP.released.releaseCause:=cg_Rel_inconsConnData;
+        vl_PDU_SCCP.released.pointer1:=0;
+        vl_PDU_SCCP.released.optionalPart:=omit;
+        vl_PDU_SCCP.released.eop:=omit;
+
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Released
+
+        //sent second  RLSD-see B.2/Q.714
+        vl_PDU_SCCP.released.destLocRef :=ConnectionTable[v_session].remoteReference;
+
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Released
+
+      }//endelse
+
+    }//endif1
+    else {}//Inactivity test received with destLocRef  not in ConnectionTable
+    //discard
+
+  }//processing_PDU_SCCP_InactivityTest
+
+  //******************************************************************
+  //   processing_PDU_SCCP_ResetRequest
+  //******************************************************************
+  function processing_PDU_SCCP_ResetRequest ( in PDU_SCCP_ResetRequest pl_PDU_SCCP_ResetRequest)
+  runs on SCCP_CT
+  {
+    var PDU_SCCP vl_PDU_SCCP;
+
+    //check if connection already established
+    if (ConnectionAlreadyEstablished(pl_PDU_SCCP_ResetRequest.destLocRef))
+    {//startif1
+      v_session :=Retrieve_session(pl_PDU_SCCP_ResetRequest.destLocRef);
+      //check if remote reference is correct -Table B.2 /Q.714
+
+      if (ConnectionTable[v_session].remoteReference==pl_PDU_SCCP_ResetRequest.sourceLocRef)
+      {//startif2
+        //Action Table follows
+        if (ConnectionTable[v_session].state==idle)
+        {//startif3
+
+          //assemble and route MTP3_ASP
+          vl_PDU_SCCP.pduerror.messageType:=err;
+          vl_PDU_SCCP.pduerror.destLocRef:=ConnectionTable[v_session].remoteReference;
+          vl_PDU_SCCP.pduerror.errorCause:=cg_Err_unassignedDestinationLRN;
+          MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+            (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Error
+          //then return to idle
+
+        }//endif3
+        else if (ConnectionTable[v_session].state==connection_pending_IC) {}//discard message, return
+        else if (ConnectionTable[v_session].state==connection_pending_OG)
+        {//startif3
+          //stop connection timer
+          f_StopTimer(conn_est,v_session);
+          //assemble ASP_SCCP_N_
+          var ASP_SCCP_N_DISCONNECT_ind  vl_N_DISCONNECT_ind;
+          vl_N_DISCONNECT_ind.originator:=cg_NSU;
+          vl_N_DISCONNECT_ind.reason:=cg_DISC_normal;
+          vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+          SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            omit,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+            ));//send ASP_SCCP_N_DISCONNECT_ind
+          //release resources
+          ReleaseResources(v_session);
+        }//endif3
+        else if (ConnectionTable[v_session].state==disconnect_pending) {}
+        else if (ConnectionTable[v_session].state==reset_bothway)
+        {//startif3
+
+          //assemble ASP_SCCP_N_
+          var ASP_SCCP_N_RESET_cfm vl_N_RESET_cfm;
+          vl_N_RESET_cfm.connectionId:=ConnectionTable[v_session].connectionId;
+          SCCP_SP_PORT.send( t_ASP_N_RESET_cfm(vl_N_RESET_cfm.connectionId));//send ASP_SCCP_N_RESET_cfm
+
+          //stop reset timer
+          f_StopTimer(reset,v_session);
+
+          //restart receive inactivity timer
+          f_StopTimer(iar,v_session);//to avoid warnings
+          f_StartTimer(iar,v_session);
+          //change state
+          ConnectionTable[v_session].state:=reset_IC;
+        }//endif3
+        else if (ConnectionTable[v_session].state==active)
+        {//startif3
+          //restart receive inactivity timer
+          f_StopTimer(iar,v_session);//to avoid warnings
+          f_StartTimer(iar,v_session);
+          //send ASP_SCCP_N_RESET_ind
+          //assemble ASP_SCCP_N_
+          var ASP_SCCP_N_RESET_ind vl_N_RESET_ind;
+          vl_N_RESET_ind.originator:=cg_NSU;
+          vl_N_RESET_ind.reason:=cg_RESET_unspec;
+          vl_N_RESET_ind.connectionId:=ConnectionTable[v_session].connectionId;
+
+          SCCP_SP_PORT.send( t_ASP_N_RESET_ind(
+            vl_N_RESET_ind.originator,
+            vl_N_RESET_ind.reason,
+            vl_N_RESET_ind.connectionId
+            ));//send ASP_SCCP_N_RESET_ind
+
+          //reset variables
+          ConnectionTable[v_session].state:=reset_IC;
+        }//endif3
+        else if (ConnectionTable[v_session].state==wait_conn_confirm)
+        {//startif3
+
+          //stop connection timer
+          f_StopTimer(conn_est,v_session);
+          //release resources
+          ReleaseResources(v_session);
+        }//endif3
+        else { log("RESREQ received in an unexpected state");  }
+      }//endif2
+      else {//remote reference inconsistent, error action follows
+
+        vl_PDU_SCCP.pduerror.messageType:=err;
+        vl_PDU_SCCP.pduerror.destLocRef:=pl_PDU_SCCP_ResetRequest.sourceLocRef;
+        vl_PDU_SCCP.pduerror.errorCause:=cg_Err_inconsistentSourceLRN;
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Error
+
+      }//endelse
+    }//endif1
+    else     {//startelse-Reset request received with destLocRef  not in ConnectionTable
+
+      //send ERR
+      vl_PDU_SCCP.pduerror.messageType:=err;
+      vl_PDU_SCCP.pduerror.destLocRef:=pl_PDU_SCCP_ResetRequest.sourceLocRef;
+      vl_PDU_SCCP.pduerror.errorCause:=cg_Err_unassignedDestinationLRN;
+
+      MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+      (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Error
+
+    }//endelse
+
+  }//processing_PDU_SCCP_ResetRequest
+
+  //******************************************************************
+  //   processing_PDU_SCCP_ResetConfirm
+  //******************************************************************
+  function processing_PDU_SCCP_ResetConfirm ( in PDU_SCCP_ResetConfirm pl_PDU_SCCP_ResetConfirm)
+  runs on SCCP_CT
+  {
+    var PDU_SCCP vl_PDU_SCCP;
+
+    //check if connection already established
+    if (ConnectionAlreadyEstablished(pl_PDU_SCCP_ResetConfirm.destLocRef))
+    {//startif1
+      v_session :=Retrieve_session(pl_PDU_SCCP_ResetConfirm.destLocRef);
+
+      //check if remote reference is correct -Table B.2 /Q.714
+      if (ConnectionTable[v_session].remoteReference==pl_PDU_SCCP_ResetConfirm.sourceLocRef)
+      {//startif2
+        //Action Table follows
+
+        if (ConnectionTable[v_session].state==idle)
+        { log("RSC received in state:idle ");}//do nothing-return to idle state, no source ref known
+        else if (ConnectionTable[v_session].state==connection_pending_IC)
+        { log("RSC received in state:connection_pending_IC ");}//discard message, return
+        else if (ConnectionTable[v_session].state==connection_pending_OG)
+        {//startif3
+
+          var ASP_SCCP_N_DISCONNECT_ind vl_N_DISCONNECT_ind;
+          //stop connection timer
+          f_StopTimer(conn_est,v_session);
+          //assemble ASP_SCCP_N_ASP
+
+          vl_N_DISCONNECT_ind.originator:=cg_NSU;
+          vl_N_DISCONNECT_ind.reason:=cg_DISC_normal;
+          vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+          SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            omit,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+            ));//send ASP_SCCP_N_DISCONNECT_ind
+          //release resources
+          ReleaseResources(v_session);
+        }//endif3
+        else if (ConnectionTable[v_session].state==disconnect_pending)
+        { log("RSC received in state:disconnect_pending");}
+        else if (ConnectionTable[v_session].state==reset_bothway)
+        {//startif3
+          //assemble ASP_SCCP_N_
+          var ASP_SCCP_N_RESET_cfm vl_N_RESET_cfm;
+          vl_N_RESET_cfm.connectionId:=ConnectionTable[v_session].connectionId;
+          SCCP_SP_PORT.send( t_ASP_N_RESET_cfm(
+            vl_N_RESET_cfm.connectionId
+            ));//send ASP_SCCP_N_RESET_cfm
+
+          //stop reset timer
+          f_StopTimer(reset,v_session);
+
+          //restart receive inactivity timer
+          f_StopTimer(iar,v_session);//to avoid warnings
+          f_StartTimer(iar,v_session);
+          //change state
+          ConnectionTable[v_session].state:=reset_IC;
+        }//endif3
+        else if (ConnectionTable[v_session].state==active)
+        {//startif3
+          //do nothing-return to idle state
+          log("RSC received in state:active");
+        }//endif3
+        else if (ConnectionTable[v_session].state==reset_IC)
+        {//startif3
+          //discard received message
+          f_StartTimer(internal_reset,v_session,0.0);//the timer times out immediately
+          //state changed to active
+          ConnectionTable[v_session].state:=active;
+        }//endif3
+        else if (ConnectionTable[v_session].state==wait_conn_confirm)
+        {//startif3
+          //stop connection timer
+          f_StopTimer(conn_est,v_session);
+          //release resources
+          ReleaseResources(v_session);
+       }//endif3
+       else { log("ResConf received in an unexpected state");  }
+      }//endif2
+      else {//remote reference inconsistent, error action follows
+
+        vl_PDU_SCCP.pduerror.messageType:=err;
+        vl_PDU_SCCP.pduerror.destLocRef :=pl_PDU_SCCP_ResetConfirm.sourceLocRef;
+        vl_PDU_SCCP.pduerror.errorCause :=cg_Err_inconsistentSourceLRN;
+
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+          (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Error
+
+      }//endelse
+    }//endif1
+    else       {//startelse-Reset confirm received with destLocRef  not in ConnectionTable
+
+      //send ERR
+      vl_PDU_SCCP.pduerror.messageType:=err;
+      vl_PDU_SCCP.pduerror.destLocRef :=pl_PDU_SCCP_ResetConfirm.sourceLocRef;
+      vl_PDU_SCCP.pduerror.errorCause :=cg_Err_unassignedDestinationLRN;
+
+      MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Error
+    }//endelse
+  }//processing_PDU_SCCP_ResetConfirm
+
+  //******************************************************************
+  //   processing_PDU_SCCP_ConnectionRefused
+  //******************************************************************
+  function processing_PDU_SCCP_ConnectionRefused ( in PDU_SCCP_ConnectionRefused pl_PDU_SCCP_ConnectionRefused)
+  runs on SCCP_CT
+  {
+    //Store data parameter
+    var template SCCP_PAR_UserData tl_data := omit;
+    if (ispresent(pl_PDU_SCCP_ConnectionRefused.optionalPart))
+    {
+      if (ispresent(pl_PDU_SCCP_ConnectionRefused.optionalPart.data))
+      {
+         tl_data := pl_PDU_SCCP_ConnectionRefused.optionalPart.data.data;
+      }
+    }
+
+    //check if connection already established
+    if (ConnectionAlreadyEstablished(pl_PDU_SCCP_ConnectionRefused.destLocRef))
+    {//startif2
+      v_session :=Retrieve_session(pl_PDU_SCCP_ConnectionRefused.destLocRef);
+      //Action Table follows
+
+      if (ConnectionTable[v_session].state==idle)
+      { log ("CREF received in state:idle");} //do nothing , return to idle, source ref unknown
+      else if (ConnectionTable[v_session].state==connection_pending_IC)
+      { log ("CREF received in state:connection_pending_IC");}
+      else if (ConnectionTable[v_session].state==active)
+      { log ("CREF received in state:active");}//do nothing, return
+      else if (ConnectionTable[v_session].state==disconnect_pending)
+      { log ("CREF received in state:disconnect_pending");}//discard message, return
+      else if (ConnectionTable[v_session].state==reset_bothway)
+      { log ("CREF received in state:reset_bothway");}//
+      else if (ConnectionTable[v_session].state==connection_pending_OG)
+      {//startif3
+        var ASP_SCCP_N_DISCONNECT_ind  vl_N_DISCONNECT_ind;
+        //stop connection timer
+        f_StopTimer(conn_est,v_session);
+        //assemble ASP_SCCP_N_
+        vl_N_DISCONNECT_ind.originator:=cg_Mapping_RefCause_Orig[pl_PDU_SCCP_ConnectionRefused.refusalCause];
+        vl_N_DISCONNECT_ind.reason:=cg_Mapping_RefCause_Reason[pl_PDU_SCCP_ConnectionRefused.refusalCause];
+        vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+
+        SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            tl_data,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+            ));//send ASP_SCCP_N_DISCONNECT_ind
+        //release resources
+        ReleaseResources(v_session);
+      }//endif3
+      else if (ConnectionTable[v_session].state==wait_conn_confirm)
+      {//startif3
+
+        //stop connection timer
+        f_StopTimer(conn_est,v_session);
+        //release resources
+        ReleaseResources(v_session);
+
+      }//endif3
+      else if (ConnectionTable[v_session].state==reset_IC)
+      {//startif3
+
+        //discard received message
+        f_StartTimer(internal_reset,v_session,0.0);//the timer times out immediately
+        //state changed to active
+        ConnectionTable[v_session].state:=active;
+
+      }//endif3
+      else { log("CREF received in an unexpected state");  }
+
+    }//endif2
+    else { log("CREF received with destLocRef not in state table");  }
+    //Connection refused with destLocRef  not in ConnectionTable
+    //discard
+
+  } //processing_PDU_SCCP_ConnectionRefused
+
+  //******************************************************************
+  //   processing_PDU_SCCP_DataForm1
+  //******************************************************************
+  function processing_PDU_SCCP_DataForm1 ( in PDU_SCCP_DataForm1 pl_PDU_SCCP_DataForm1)
+  runs on SCCP_CT
+  {
+
+    //check if connection already established
+    if (ConnectionAlreadyEstablished(pl_PDU_SCCP_DataForm1.destLocRef))
+    {//startif2
+      v_session :=Retrieve_session(pl_PDU_SCCP_DataForm1.destLocRef);
+      //Action Table follows
+
+      if (ConnectionTable[v_session].state==idle)
+      {//startif3
+        var PDU_SCCP vl_PDU_SCCP;
+        //assemble and route MTP3_ASP
+        vl_PDU_SCCP.pduerror.messageType:=err;
+        vl_PDU_SCCP.pduerror.destLocRef:=ConnectionTable[v_session].remoteReference;
+        vl_PDU_SCCP.pduerror.errorCause:=cg_Err_unassignedDestinationLRN;
+
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+          (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //Send Error
+
+          //then return to idle
+      }//endif3
+      else if (ConnectionTable[v_session].state==connection_pending_IC)
+      { log ("DT1 received in state:connection_pending_IC");}//discard message, return
+      else if (ConnectionTable[v_session].state==disconnect_pending)
+      { log ("DT1 received in state:disconnect_pending");}//discard message, return
+      else if (ConnectionTable[v_session].state==reset_bothway)
+      { log ("DT1 received in state:reset_bothway");}//
+      else if (ConnectionTable[v_session].state==connection_pending_OG)
+      {//startif3
+        var ASP_SCCP_N_DISCONNECT_ind  vl_N_DISCONNECT_ind;
+        f_StopTimer(conn_est,v_session);
+        //assemble ASP_SCCP_N_
+        vl_N_DISCONNECT_ind.originator:=cg_NSU;
+        vl_N_DISCONNECT_ind.reason:=cg_DISC_normal;
+        vl_N_DISCONNECT_ind.connectionId:=ConnectionTable[v_session].connectionId;
+
+        SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            omit,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+            ));//send ASP_SCCP_N_DISCONNECT_ind
+        //release resources
+        ReleaseResources(v_session);
+      }//endif3
+      else if (ConnectionTable[v_session].state==wait_conn_confirm)
+      {//startif3
+
+        //stop connection timer
+        f_StopTimer(conn_est,v_session);
+        //release resources
+        ReleaseResources(v_session);
+      }//endif3
+      else if (ConnectionTable[v_session].state==active)
+      {//startif3
+
+        var ASP_SCCP_N_DATA_ind vl_N_DATA_ind;
+        //restart receive inactivity  timer
+        f_StopTimer(iar,v_session);//to avoid warnings
+        f_StartTimer(iar,v_session);
+
+        buffered_sending_ASP_N_DATA_ind( pl_PDU_SCCP_DataForm1 )
+        //MODIFY-> protocol class assumed 2; M bit assumed 0 (no segm/reassembly)
+
+      }//endif3
+      else if (ConnectionTable[v_session].state==reset_IC)
+      {//startif3
+
+        //discard received message
+        f_StartTimer(internal_reset,v_session,0.0);//the timer times out immediately
+        //state changed to active
+        ConnectionTable[v_session].state:=active;
+
+      }//endif3
+      else { log("DT1 received in an unexpected state");  }
+
+    }//endif2
+    else { log("DT1 received with destLocRef  not in ConnectionTable"); }
+      //DT1 received with destLocRef  not in ConnectionTable
+      //discard
+
+  }//processing_PDU_SCCP_DataForm1
+
+
+  //******************************************************************
+  //   processing_PDU_SCCP_ExtUnitdata
+  //******************************************************************
+  function processing_PDU_SCCP_ExtUnitdata ( in PDU_SCCP_ExtUnitdata pl_PDU_SCCP_ExtUnitdata)
+  runs on SCCP_CT
+  {
+    var   integer               vl_index;
+    var   OCT3                  vl_segmRemoteRef;
+    if( ispresent( pl_PDU_SCCP_ExtUnitdata.optionalPart) and
+        ispresent( pl_PDU_SCCP_ExtUnitdata.optionalPart.segmentation) )
+    {
+      vl_segmRemoteRef:= pl_PDU_SCCP_ExtUnitdata.optionalPart.segmentation.segmLocalRef;
+      if( pl_PDU_SCCP_ExtUnitdata.optionalPart.segmentation.firstSegm =='1'B )
+      {
+         vl_index:=allocate_ClessRcvBuff( vl_segmRemoteRef);
+      }
+      else
+      {
+        vl_index:=get_ClessRcvBuffIndex( vl_segmRemoteRef );
+      };
+      if (vl_index == -1) 
+      { 
+        log("Buffer allocation failed, message ignored.");
+        return; 
+      }
+        
+      store_segmData(vl_index,pl_PDU_SCCP_ExtUnitdata);
+      if( pl_PDU_SCCP_ExtUnitdata.optionalPart.segmentation.remainingSegment == '0000'B )
+      {
+        send_ClessRcvBuff_in_N_UNITDATAind( vl_index,pl_PDU_SCCP_ExtUnitdata );
+        reallocate_ClessRcvBuff( vl_index );
+      }
+    }
+    else
+    { // not segmented case:
+      send_ClessData_in_N_UNITDATAind( pl_PDU_SCCP_ExtUnitdata );
+    }
+    return;
+
+  }//processing_PDU_SCCP_ExtUnitdata
+
+//******************************************************************
+//  Part 2  Receiving msg on port "SCCP_PORT" (User Part)
+//******************************************************************
+
+//******************************************************************
+//  processing_ASP_N_CONNECT_req
+// / ASP_SCCP_N_CONNECT_req ,   originating  node /
+//******************************************************************
+  function processing_ASP_N_CONNECT_req( in ASP_SCCP_N_CONNECT_req pl_N_CONNECT_req )
+  runs on SCCP_CT
+  {
+    var PDU_SCCP vl_PDU_SCCP;
+    var        ASP_SCCP_N_DISCONNECT_ind  vl_N_DISCONNECT_ind;
+
+    if (ConnectionAlreadyEstablished_connectionId(pl_N_CONNECT_req.connectionId))
+    // assume connectionId present
+    {//startif1
+
+      //something went wrong, we already have a session with the same connection Id
+      v_session :=Retrieve_session_connectionId(pl_N_CONNECT_req.connectionId);
+      //table of error actions
+
+    }//endif1
+    else
+    {//startelse1
+
+      //check if resources available
+      v_session:=CheckIdleIndividuals();
+      if (v_session==-1)     //No idle individual found
+      {//startif2
+
+        //assemble ASP_SCCP_N_ASP
+        vl_N_DISCONNECT_ind.originator:=cg_NSP; // network service provider
+        vl_N_DISCONNECT_ind.reason:=cg_CREF_unspec_T;
+        vl_N_DISCONNECT_ind.connectionId:=pl_N_CONNECT_req.connectionId;
+
+        SCCP_SP_PORT.send( t_ASP_N_DISCONNECT_ind(
+            vl_N_DISCONNECT_ind.originator,
+            omit,
+            vl_N_DISCONNECT_ind.reason,
+            omit,
+            vl_N_DISCONNECT_ind.connectionId,
+            omit
+        ));//send ASP_SCCP_N_DISCONNECT_ind
+        //return to idle
+      }//endif2
+
+      if ((v_session<=15)and (v_session>=0))
+      {//startif2
+
+        //assign local reference, SLS:=tsp_MTP3_SLS, protocol class:=2
+        ConnectionTable[v_session].localReference:=int2oct(pl_N_CONNECT_req.connectionId,3);
+        ConnectionTable[v_session].connectionId  :=pl_N_CONNECT_req.connectionId;
+
+        //to simplify generation of local reference, connectionID received from user is sent as such
+        //only local reference is assigned at this point
+        //send connection request, no coupling
+        //DPC :remote  node
+        //no coupling reqrd.
+        //compatibility OK
+        //no restriction
+        //assemble and route MTP3_ASP
+        vl_PDU_SCCP.connrequest.messageType:=cr;
+        vl_PDU_SCCP.connrequest.sourceLocRef:=ConnectionTable[v_session].localReference;
+        // send local reference just assigned!
+        vl_PDU_SCCP.connrequest.protClass:={
+          class:='0010'B,
+          messageHandling:='0000'B
+          };//class 2
+        vl_PDU_SCCP.connrequest.pointer1:=2;
+        vl_PDU_SCCP.connrequest.calledPAddress:=ConvertASPAddressToEncodedAddress(pl_N_CONNECT_req.calledAddress); //new!
+        vl_PDU_SCCP.connrequest.pointer2:=vl_PDU_SCCP.connrequest.calledPAddress.paramLength+2; //automatic?
+
+        if(ispresent(pl_N_CONNECT_req.callingAddress))
+        {//startif3
+
+          //temporary variable  to avoid type conversion problems
+          var SCCP_param_CPartyAddressEnc_opt   vl_SCCP_param_CPartyAddressEnc_opt;
+          var SCCP_param_CPartyAddressEnc       vl_SCCP_param_CPartyAddressEnc;
+
+          vl_SCCP_param_CPartyAddressEnc:=
+            ConvertASPAddressToEncodedAddress(pl_N_CONNECT_req.callingAddress);
+
+          vl_SCCP_param_CPartyAddressEnc_opt.paramName  :=con_SCCP_cgPA;
+          vl_SCCP_param_CPartyAddressEnc_opt.paramLength:=vl_SCCP_param_CPartyAddressEnc.paramLength;
+          vl_SCCP_param_CPartyAddressEnc_opt.addr       :=vl_SCCP_param_CPartyAddressEnc.addr;
+
+          vl_PDU_SCCP.connrequest.optionalPart.callingPAddress:=vl_SCCP_param_CPartyAddressEnc_opt;
+
+        }//endif3
+        else { vl_PDU_SCCP.connrequest.optionalPart.callingPAddress:=omit }
+
+        if(ispresent(pl_N_CONNECT_req.userData))
+        {//startif3
+
+            //temporary variable  to avoid type conversion problems
+            var SCCP_param_Data_opt  vl_SCCP_param_Data_opt;
+
+            vl_SCCP_param_Data_opt.paramName:=con_SCCP_data;
+            vl_SCCP_param_Data_opt.data:=pl_N_CONNECT_req.userData;
+            vl_SCCP_param_Data_opt.paramLength:=lengthof(vl_SCCP_param_Data_opt.data);
+            vl_PDU_SCCP.connrequest.optionalPart.data:=vl_SCCP_param_Data_opt;
+
+        }//endif3
+        else { vl_PDU_SCCP.connrequest.optionalPart.data:=omit}
+
+        if(ispresent(pl_N_CONNECT_req.callingAddress) or
+           ispresent(pl_N_CONNECT_req.userData))
+        {
+          vl_PDU_SCCP.connrequest.optionalPart.credit:=omit;
+          vl_PDU_SCCP.connrequest.optionalPart.hopCounter:=omit;
+          vl_PDU_SCCP.connrequest.optionalPart.importance:=omit;
+
+          vl_PDU_SCCP.connrequest.eop:= {paramName:=con_SCCP_eop};
+        }
+        else
+        {
+          vl_PDU_SCCP.connrequest.optionalPart := omit;
+          vl_PDU_SCCP.connrequest.eop := omit;
+        }
+
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+          (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Connection request
+
+        //start connection timer
+        f_StartTimer(conn_est,v_session);
+        ConnectionTable[v_session].state:=connection_pending_OG;
+      }//endif2
+
+    }//endelse
+
+  }//processing_ASP_N_CONNECT_req
+  //******************************************************************
+  //End ASP_SCCP_N_CONNECT_req ,   originating  node
+  //******************************************************************
+
+  //******************************************************************
+  //  processing_ASP_N_CONNECT_resp
+  //******************************************************************
+  function processing_ASP_N_CONNECT_res( in ASP_SCCP_N_CONNECT_res pl_N_CONNECT_res )
+  runs on SCCP_CT
+  {
+    var PDU_SCCP vl_PDU_SCCP;
+
+    // first see if session exists in the ConnectionTable
+    //search done based on Connection ID
+
+    if (ConnectionAlreadyEstablished_connectionId(pl_N_CONNECT_res.connectionId))
+    //assume connectionId present
+    {//startif1
+      //retrieve session
+      v_session :=Retrieve_session_connectionId(pl_N_CONNECT_res.connectionId);
+
+      //Action Table follows
+
+      if (ConnectionTable[v_session].state==idle)
+      {
+        log("N_CONNECT_resp received in state:idle");
+        //do nothing-return to idle state
+      }
+      else if (ConnectionTable[v_session].state==connection_pending_IC)
+      {//startif2
+
+        //assign SLS:=tsp_MTP3_SLS, assign protocol class=2 (CO, no flow ctrl.)
+
+        //assemble and route MTP3_ASP
+
+        vl_PDU_SCCP.connconfirm.messageType:=cc;
+        vl_PDU_SCCP.connconfirm.sourceLocRef:=ConnectionTable[v_session].localReference;
+        vl_PDU_SCCP.connconfirm.destLocRef:=ConnectionTable[v_session].remoteReference;
+        vl_PDU_SCCP.connconfirm.protClass.class:='0010'B;//protocol class 2
+        vl_PDU_SCCP.connconfirm.protClass.messageHandling:='0000'B;//no special treatment
+
+        if(ispresent(pl_N_CONNECT_res.respondingAddress))
+        {//startif3
+
+          //temporary variable  to avoid type conversion problems
+          var SCCP_param_CPartyAddressEnc_opt vl_SCCP_param_CPartyAddressEnc_opt;
+          var SCCP_param_CPartyAddressEnc     vl_SCCP_param_CPartyAddressEnc;
+
+          vl_SCCP_param_CPartyAddressEnc:=
+              ConvertASPAddressToEncodedAddress(pl_N_CONNECT_res.respondingAddress);
+
+          vl_SCCP_param_CPartyAddressEnc_opt.paramName  := con_SCCP_cdPA; // cgPA->cdPA  ethbaat, 2003.11.06
+          vl_SCCP_param_CPartyAddressEnc_opt.paramLength:= vl_SCCP_param_CPartyAddressEnc.paramLength;
+          vl_SCCP_param_CPartyAddressEnc_opt.addr       := vl_SCCP_param_CPartyAddressEnc.addr;
+
+          vl_PDU_SCCP.connconfirm.optionalPart.calledPAddress:= vl_SCCP_param_CPartyAddressEnc_opt;
+        }//endif3
+        else { vl_PDU_SCCP.connconfirm.optionalPart.calledPAddress:=omit }
+
+        if(ispresent(pl_N_CONNECT_res.userData))
+        {//startif3
+
+          //temporary variable  to avoid type conversion problems
+          var SCCP_param_Data_opt  vl_SCCP_param_Data_opt;
+
+          vl_SCCP_param_Data_opt.paramName:=con_SCCP_data;
+          vl_SCCP_param_Data_opt.data:=pl_N_CONNECT_res.userData; // corrected by ethbaat 2003.10.16
+          vl_SCCP_param_Data_opt.paramLength:=lengthof(vl_SCCP_param_Data_opt.data);
+
+          vl_PDU_SCCP.connconfirm.optionalPart.data:=vl_SCCP_param_Data_opt;
+        }//endif3
+        else {vl_PDU_SCCP.connconfirm.optionalPart.data:=omit}
+
+        if(ispresent(pl_N_CONNECT_res.respondingAddress) or
+           ispresent(pl_N_CONNECT_res.userData))
+        {
+          vl_PDU_SCCP.connconfirm.pointer1:=1;
+          vl_PDU_SCCP.connconfirm.optionalPart.credit:=omit;
+          vl_PDU_SCCP.connconfirm.optionalPart.importance:=omit;
+          vl_PDU_SCCP.connconfirm.eop:= {paramName:=con_SCCP_eop};
+        }
+        else
+        {
+          vl_PDU_SCCP.connconfirm.pointer1:=0;
+          vl_PDU_SCCP.connconfirm.optionalPart := omit;
+          vl_PDU_SCCP.connconfirm.eop:=omit;
+        }
+
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+          (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send connection confirm
+
+        f_StartTimer(ias,v_session);  // ??? check them!!!
+        f_StartTimer(iar,v_session);  //start inactivity timers
+        ConnectionTable[v_session].state:=active;//state change
+
+      }//endif2
+      else { log("N_CONNECT_resp received in an unexpected state");}
+
+    }//endif1
+
+  }//processing_ASP_N_CONNECT_resp
+
+  //******************************************************************
+  //  processing_ASP_N_DATA_req
+  //******************************************************************
+
+  function processing_ASP_N_DATA_req( in ASP_SCCP_N_DATA_req pl_N_DATA_req )
+  runs on SCCP_CT
+  {
+    var PDU_SCCP vl_PDU_SCCP;
+
+    // first see if session exists in the ConnectionTable
+
+    if (ConnectionAlreadyEstablished_connectionId(pl_N_DATA_req.connectionId))
+    //assume connectionId present
+    {//startif1
+
+      //retrieve v_session
+      v_session :=Retrieve_session_connectionId(pl_N_DATA_req.connectionId);
+
+      //Action Table follows
+      if (ConnectionTable[v_session].state==idle)
+      { log ("N_DATA_req received in idle state");}
+      else if (ConnectionTable[v_session].state==reset_bothway)
+      { log ("N_DATA_req received in reset_bothway state");}
+      else if (ConnectionTable[v_session].state==active)
+      {//startif2
+        sending_dataform1s_in_ASP_MTP_TRANSFERreqs(pl_N_DATA_req);
+        //no change of state, remains active
+      }//endif2
+      else { log ("N_DATA_req received in an unexpected state"); }
+
+    }//endif1
+    else { log("N_DATA_req with Connection ID not in the state table -- illegal request"); }
+
+  }//processing_ASP_N_DATA_req
+
+  //******************************************************************
+  //  processing_ASP_N_DISCONNECT_req
+  //******************************************************************
+
+  function processing_ASP_N_DISCONNECT_req( in ASP_SCCP_N_DISCONNECT_req pl_N_DISCONNECT_req )
+  runs on SCCP_CT
+  {
+    var PDU_SCCP vl_PDU_SCCP;
+    var boolean vl_opt_part_present:=false;
+
+    // first see if session exists in the ConnectionTable
+
+    if (ConnectionAlreadyEstablished_connectionId(pl_N_DISCONNECT_req.connectionId))
+    //assume connectionId present
+    {//startif1
+
+      //retrieve v_session
+      v_session :=Retrieve_session_connectionId(pl_N_DISCONNECT_req.connectionId);
+
+      //Action Table follows
+      if (ConnectionTable[v_session].state==idle)
+      { log ("N_DISCONNECT_req received in state:idle");}
+      else if (ConnectionTable[v_session].state==connection_pending_IC)
+      {//startif2
+
+        //assemble and route MTP3_ASP
+        vl_PDU_SCCP.connrefused.messageType:=cref;
+        vl_PDU_SCCP.connrefused.destLocRef:=ConnectionTable[v_session].remoteReference;
+        vl_PDU_SCCP.connrefused.refusalCause:=pl_N_DISCONNECT_req.reason;
+        vl_PDU_SCCP.connrefused.pointer1:=0; //No optional part
+        vl_PDU_SCCP.connrefused.optionalPart:=omit;
+        vl_PDU_SCCP.connrefused.eop:=omit;
+
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+          (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send connection refused
+
+        //release resources
+        ReleaseResources(v_session);
+
+      }//endif2
+      else if (ConnectionTable[v_session].state==active)
+      {//startif2
+
+        //stop inactivity timers
+        f_StopTimer(ias,v_session);
+        f_StopTimer(iar,v_session);
+
+        //assemble and route MTP3_ASP
+
+        vl_PDU_SCCP.released.messageType:=rlsd;
+        vl_PDU_SCCP.released.destLocRef:=ConnectionTable[v_session].remoteReference;
+        vl_PDU_SCCP.released.sourceLocRef:=ConnectionTable[v_session].localReference;
+        vl_PDU_SCCP.released.releaseCause:=pl_N_DISCONNECT_req.reason;
+        if(ispresent(pl_N_DISCONNECT_req.userData)){
+          vl_opt_part_present:=true;
+          vl_PDU_SCCP.released.optionalPart.data.paramName:=con_SCCP_data;
+          vl_PDU_SCCP.released.optionalPart.data.paramLength:=lengthof(pl_N_DISCONNECT_req.userData);
+          vl_PDU_SCCP.released.optionalPart.data.data:=pl_N_DISCONNECT_req.userData;
+        } else {
+          vl_PDU_SCCP.released.optionalPart.data:=omit;
+        }
+        if(ispresent(pl_N_DISCONNECT_req.importance)){
+          vl_opt_part_present:=true;
+          vl_PDU_SCCP.released.optionalPart.importance.paramName:=con_SCCP_imp
+          vl_PDU_SCCP.released.optionalPart.importance.paramLength:=1
+          vl_PDU_SCCP.released.optionalPart.importance.importance:=pl_N_DISCONNECT_req.importance
+          vl_PDU_SCCP.released.optionalPart.importance.reserved:='00000'B
+        } else {
+          vl_PDU_SCCP.released.optionalPart.importance:=omit;
+        }
+        if(vl_opt_part_present){
+          vl_PDU_SCCP.released.pointer1:=1;
+          vl_PDU_SCCP.released.eop.paramName:=con_SCCP_eop;
+        } else {
+          vl_PDU_SCCP.released.pointer1:=0;//No optional part
+          vl_PDU_SCCP.released.optionalPart:=omit;
+          vl_PDU_SCCP.released.eop:=omit;
+        }
+
+        MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+          (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send released
+
+        //start release timer
+        f_StartTimer(rel,v_session);
+
+        ConnectionTable[v_session].state:=disconnect_pending;
+
+      }//endif2
+      else if (ConnectionTable[v_session].state==connection_pending_OG)
+      {//startif2
+
+        //change state to "wait connection confirm "
+        ConnectionTable[v_session].state:=wait_conn_confirm;
+        //and return
+
+      }//endif2
+      else { log("N_DISCONNECT_req received in an unexpected state");}
+
+    }//endif1
+
+  }//processing_ASP_N_DISCONNECT_req
+
+
+  //******************************************************************
+  //  function SCCP_SPC_int2bit - working function to processing_ASP_N_UNITDATA_req
+  // v_sio is local to SCCP_CT
+  // SCCPServiceType
+  //******************************************************************
+  function SCCP_SPC_int2bit( in integer pl_SPC, in SCCP_ServiceType pl_SCCP_ServiceType, in octetstring pl_SIO )
+  return SCCP_ASPfield_SignallingPointCode
+  {
+    var SCCP_ASPfield_SignallingPointCode vl_SPC; //bitstring
+    vl_SPC :='0000000000000000'B;
+
+    if( (pl_SCCP_ServiceType == mtp3_itu) or (pl_SCCP_ServiceType == mtp3b_itu))
+    {
+       //vl_SPC := '00'B&int2bit( pl_SPC, 14);
+       vl_SPC := int2bit( pl_SPC, 14);
+    }
+    else if ( (pl_SCCP_ServiceType == mtp3_ansi) or  (pl_SCCP_ServiceType == mtp3b_ansi) )
+    {
+       vl_SPC := int2bit( pl_SPC, 24);
+    }
+    else if( (pl_SCCP_ServiceType == mtp3_ttc) or (pl_SCCP_ServiceType == mtp3b_ttc) )
+    {
+      if( (pl_SIO == '83'O) or (pl_SIO == '43'O) or (pl_SIO == 'C3'O) ) //ttc national
+      {
+        vl_SPC := int2bit( pl_SPC, 16);
+      }
+      else if( pl_SIO == '03'O ) //ttc international
+      {
+        //vl_SPC := '00'B&int2bit( pl_SPC, 14);
+        vl_SPC := int2bit( pl_SPC, 14);
+      }
+      else { log ( "SIO setting error"); }
+    }
+    else if( pl_SCCP_ServiceType == mtp3_mpt )
+    {
+      var integer vl_NI := oct2int(pl_SIO)/64;
+      if( vl_NI == 2 ) //mpt national
+      {
+        vl_SPC := int2bit( pl_SPC, 24);
+      }
+      else //mpt international
+      {
+        vl_SPC := int2bit( pl_SPC, 14);
+      }
+    }
+    else
+    { log ( "ServiceType setting error. Use values",
+            "mtp3_itu, mtp3b_itu, mtp3_ansi, mtp3b_ansi,",
+            " mtp3_ttc, mtp3b_ttc, mtp3_mpt or m3ua");
+    }
+
+    return vl_SPC;
+
+  }// SCCP_SPC_int2bit
+
+  //******************************************************************
+  //  sending_udt_in_ASP_MTP_TRANSFERreqs
+  //  sends data in one step
+  //******************************************************************
+  function sending_udt_in_ASP_MTP_TRANSFERreqs( in SCCP_param_ProtocolClass     pl_protClass,
+                                                in SCCP_param_CPartyAddressEnc  pl_CalledPAddress,
+                                                in SCCP_param_CPartyAddressEnc  pl_CallingPAddress,
+                                                in SCCP_param_Data              pl_data)
+  runs on SCCP_CT
+  {
+    var PDU_SCCP vl_PDU_SCCP;
+    vl_PDU_SCCP.unitdata.messageType    := udt ;
+    vl_PDU_SCCP.unitdata.protClass      := pl_protClass;
+    vl_PDU_SCCP.unitdata.calledPAddress := pl_CalledPAddress;
+    vl_PDU_SCCP.unitdata.callingPAddress:= pl_CallingPAddress;
+    vl_PDU_SCCP.unitdata.data           := pl_data;
+    vl_PDU_SCCP.unitdata.pointer1 := 0;
+    vl_PDU_SCCP.unitdata.pointer2 := 0;
+    vl_PDU_SCCP.unitdata.pointer3 := 0;
+
+    MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+          (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP));//send Unitdata
+    return;
+
+  }//sending_udt_in_ASP_MTP_TRANSFERreqs
+
+  //******************************************************************
+  //  sending_xudt_in_ASP_MTP_TRANSFERreqs
+  //  segmentates and sends data to the encoder
+  //******************************************************************
+  function sending_xudt_in_ASP_MTP_TRANSFERreqs(in SCCP_param_ProtocolClass     pl_protClass,
+                                                in SCCP_param_CPartyAddressEnc  pl_CalledPAddress,
+                                                in SCCP_param_CPartyAddressEnc  pl_CallingPAddress,
+                                                in SCCP_param_Data              pl_data)
+  runs on SCCP_CT
+  {
+    var PDU_SCCP vl_PDU_SCCP;
+    var integer vl_actdatalen; //without length of paramLength field
+    var integer vl_len; // remaining data length without length of paramLength field
+    var integer vl_from;
+    var integer vl_overhead;
+    var integer vl_maxdatalen;
+    var integer vl_numberofPDUs; // ... to be sent
+
+    vl_PDU_SCCP.extudata.messageType            := xudt ; //len:1
+    vl_PDU_SCCP.extudata.hopCounter := 15; // check it in spec. //len:1
+    vl_PDU_SCCP.extudata.protClass              := pl_protClass; //len:1
+    vl_PDU_SCCP.extudata.pointer1               := 0; //len:4
+    vl_PDU_SCCP.extudata.pointer2               := 0;
+    vl_PDU_SCCP.extudata.pointer3               := 0;
+    vl_PDU_SCCP.extudata.pointer4               := 0;
+    vl_PDU_SCCP.extudata.calledPAddress         := pl_CalledPAddress;
+    vl_PDU_SCCP.extudata.callingPAddress        := pl_CallingPAddress;
+
+    vl_overhead := 15 +
+                    (vl_PDU_SCCP.extudata.calledPAddress.paramLength+1) +
+                    (vl_PDU_SCCP.extudata.callingPAddress.paramLength+1);
+
+    vl_len := pl_data.paramLength;
+    vl_maxdatalen := v_sccp_pdu_maxlen - vl_overhead -1; // -1:paramLength
+    vl_numberofPDUs := vl_len/vl_maxdatalen; // 0 if 1 PDU exists
+
+    // init segmentation:
+    vl_PDU_SCCP.extudata.optionalPart.segmentation.segmLocalRef:= create_segmLocalRef();
+    vl_PDU_SCCP.extudata.optionalPart.segmentation.firstSegm        := '1'B; //'yes'
+    vl_PDU_SCCP.extudata.optionalPart.segmentation.paramName        := con_SCCP_segm;
+    vl_PDU_SCCP.extudata.optionalPart.segmentation.paramLength      := 4;
+    vl_PDU_SCCP.extudata.optionalPart.segmentation.remainingSegment := int2bit(vl_numberofPDUs,4);
+    vl_PDU_SCCP.extudata.optionalPart.segmentation.reserved         := '00'B;
+
+    if( pl_protClass.class == '0001'B )
+    { vl_PDU_SCCP.extudata.optionalPart.segmentation.class          := '1'B; }
+    else
+    { vl_PDU_SCCP.extudata.optionalPart.segmentation.class          := '0'B; };
+
+    vl_PDU_SCCP.extudata.optionalPart.importance:= omit; //len:0
+    vl_PDU_SCCP.extudata.eop.paramName := con_SCCP_eop;  //len:0
+
+    vl_from := 0;
+
+    while ( vl_len > 0 )
+    {
+      vl_PDU_SCCP.extudata.optionalPart.segmentation.remainingSegment := int2bit(vl_numberofPDUs,4);
+
+      if ( vl_len > vl_maxdatalen )
+      { vl_actdatalen := vl_maxdatalen; }
+      else
+      { vl_actdatalen := vl_len; };
+
+      vl_PDU_SCCP.extudata.data.data := substr( pl_data.data, vl_from, vl_actdatalen );
+      vl_PDU_SCCP.extudata.data.paramLength := vl_actdatalen;
+
+      MTP3_SCCP_PORT.send( t_ASP_MTP3_TRANSFERreq_sccp
+        (v_SIO,v_own_SPC,v_remote_SPC,v_SLS,vl_PDU_SCCP)); //send PDU_SCCP_ExtUnitdata
+
+      vl_PDU_SCCP.extudata.optionalPart.segmentation.firstSegm := '0'B; //'no'
+
+      vl_numberofPDUs := vl_numberofPDUs -1 ;
+      vl_from         := vl_from + vl_actdatalen;
+      vl_len          := vl_len  - vl_actdatalen;
+    }//while
+
+    log("Last remaining Segment:", vl_PDU_SCCP.extudata.optionalPart.segmentation.remainingSegment );
+
+    // not necessary, remove it:
+    //reset_segmLocalRef(vl_PDU_SCCP.extudata.optionalPart.segmentation.segmLocalRef);
+    return;
+  }//sending_xudt_in_ASP_MTP_TRANSFERreqs
+
+  //******************************************************************
+  //  processing_ASP_N_UNITDATA_req
+  //******************************************************************
+
+  function processing_ASP_N_UNITDATA_req( in ASP_SCCP_N_UNITDATA_req pl_N_UNITDATA_req )
+  runs on SCCP_CT
+  {
+    var PDU_SCCP vl_PDU_SCCP;
+    var SCCP_param_ProtocolClass vl_protClass;
+    var SCCP_param_CPartyAddressEnc vl_CalledPAddress, vl_CallingPAddress;
+    var integer vl_overhead_length;
+    var SCCP_param_Data vl_data;
+
+    // Protocol class mapping :
+    // old: vl_protClass.messageHandling:='0000'B;//no special options
+
+    // 3.6/ Q.713: bit1-4
+    if ( ispresent(pl_N_UNITDATA_req.sequenceControl) and
+      (substr(pl_N_UNITDATA_req.sequenceControl,7,1) == '1'B) ) //least significant bit!
+    { vl_protClass.class:='0001'B; }
+    else
+    { vl_protClass.class:='0000'B; } //changed to 0000 from 0001 ethbaat 2003-11-13
+
+    // 3.6/ Q.713: bit 5-8:
+    if ( ispresent(pl_N_UNITDATA_req.returnOption) and
+      (substr(pl_N_UNITDATA_req.returnOption,7,1) == '1'B) ) //least significant bit!
+    { vl_protClass.messageHandling:='1000'B}
+    else
+    { vl_protClass.messageHandling:='0000'B}
+
+    //Called Address mapping:
+    if (pl_N_UNITDATA_req.calledAddress.addressIndicator.pointCodeIndic=='1'B) //DPC included
+    {//startif1
+
+      if (bit2int(pl_N_UNITDATA_req.calledAddress.signPointCode) == v_remote_SPC ) // remote SPC
+      {//startif2
+        vl_CalledPAddress:=
+          ConvertASPAddressToEncodedAddress(pl_N_UNITDATA_req.calledAddress);
+      }
+      else
+      {
+        log("The remote SPC in ASP_SCCP_N_UNITDATA_req is not the same as the one you called by StartSCCP.ASP dropped")
+        return;
+      }
+
+    }//endif1
+    else
+    {  //DPC not present, use values local for component
+
+      var SCCP_PAR_Address vl_SCCP_PAR_Address;
+      vl_SCCP_PAR_Address := pl_N_UNITDATA_req.calledAddress;
+
+      if ( v_remote_SPC > 0)
+      {
+        vl_SCCP_PAR_Address.addressIndicator.pointCodeIndic :='1'B; // 3.4.1/Q713.
+        vl_SCCP_PAR_Address.addressIndicator.routingIndicator := cg_route_on_SSN;
+        // 14,24 or 16 bits:
+        vl_SCCP_PAR_Address.signPointCode    := SCCP_SPC_int2bit( v_remote_SPC, v_SCCPServiceType, v_SIO);
+      }
+      // vl_SCCP_PAR_Address.addressIndicator.ssnIndicator unchanged
+      // vl_SCCP_PAR_Address.addressIndicator.globalTitleIndic unchanged
+      // vl_SCCP_PAR_Address.subsystemNumber  unchanged
+      // vl_SCCP_PAR_Address.globalTitle      unchanged
+
+      vl_CalledPAddress :=
+          ConvertASPAddressToEncodedAddress(vl_SCCP_PAR_Address);
+
+    }//endif1
+
+    vl_CallingPAddress :=
+      ConvertASPAddressToEncodedAddress(pl_N_UNITDATA_req.callingAddress);
+
+    vl_data.data := pl_N_UNITDATA_req.userData;
+    vl_data.paramLength:= lengthof( pl_N_UNITDATA_req.userData);
+
+    // unitdata overhead calculation:
+    // msg type: 1; prot class: 2; 3 pointers: 3=> total:6
+    vl_overhead_length := (vl_CalledPAddress.paramLength+1) +
+                            (vl_CallingPAddress.paramLength +1)+ 6 ;
+
+    if( (tsp_force_xudt==0) and
+        (vl_overhead_length + vl_data.paramLength + 1) <=  v_sccp_pdu_maxlen )
+    {
+      sending_udt_in_ASP_MTP_TRANSFERreqs(vl_protClass,
+                                          vl_CalledPAddress,
+                                          vl_CallingPAddress,
+                                          vl_data );
+    }
+    else
+    {
+      sending_xudt_in_ASP_MTP_TRANSFERreqs(vl_protClass,
+                                          vl_CalledPAddress,
+                                          vl_CallingPAddress,
+                                          vl_data );
+    }
+
+  }//processing_ASP_N_UNITDATA_req
+
+//******************************************************************
+//******************************************************************
+function ScanEvents()  runs on SCCP_CT
+//******************************************************************
+//******************************************************************
+{//startfunction
+
+  var       PDU_SCCP vl_PDU_SCCP;
+
+  var        ASP_SCCP_N_CONNECT_req     vl_N_CONNECT_req;
+  var        ASP_SCCP_N_CONNECT_ind     vl_N_CONNECT_ind;
+  var        ASP_SCCP_N_CONNECT_res     vl_N_CONNECT_res;
+  var        ASP_SCCP_N_CONNECT_cfm     vl_N_CONNECT_cfm;
+  var        ASP_SCCP_N_DATA_req        vl_N_DATA_req;
+  var        ASP_SCCP_N_DATA_ind        vl_N_DATA_ind;
+  var        ASP_SCCP_N_DISCONNECT_req  vl_N_DISCONNECT_req;
+  var        ASP_SCCP_N_DISCONNECT_ind  vl_N_DISCONNECT_ind;
+  var        ASP_SCCP_N_UNITDATA_req    vl_N_UNITDATA_req;
+  var        ASP_SCCP_N_UNITDATA_ind    vl_N_UNITDATA_ind;
+  var        ASP_SCCP_N_NOTICE_ind      vl_N_NOTICE_ind;
+  
+  var integer i;
+  //this function  scans the MTP3 and user port for incoming messages and checks timers for timeout
+  
+  f_initialize_timer_states();
+
+  while (true)
+  {//startwhile
+
+    alt
+    //******************************************************************
+    {//startalt0
+    //******************************************************************
+    [] MTP3_SCCP_PORT.receive(PDU_SCCP : ? ) -> value vl_PDU_SCCP
+      {
+        //******************************************************************
+        //Unitdata received at destination node
+        //******************************************************************
+        if (ischosen(vl_PDU_SCCP.unitdata))
+        { 
+    //      vl_PDU_SCCP.unitdata.pointer1 :=3;
+    //      vl_PDU_SCCP.unitdata.pointer2 :=0;
+    //      vl_PDU_SCCP.unitdata.pointer3 :=0;
+          processing_PDU_SCCP_Unitdata( vl_PDU_SCCP.unitdata ); 
+        } 
+
+        //******************************************************************
+        //Data received at destination node
+        //******************************************************************
+        else if (ischosen(vl_PDU_SCCP.dataform1))
+        { 
+    //      vl_PDU_SCCP.dataform1.pointer1 :=1;
+          processing_PDU_SCCP_DataForm1( vl_PDU_SCCP.dataform1 ); 
+        } 
+
+        //******************************************************************
+        //Extended unitdata received at destination node
+        //******************************************************************
+        else if (ischosen(vl_PDU_SCCP.extudata))
+        { 
+    //      vl_PDU_SCCP.extudata.pointer1 :=0;
+    //      vl_PDU_SCCP.extudata.pointer2 :=0;
+    //      vl_PDU_SCCP.extudata.pointer3 :=0;
+    //      vl_PDU_SCCP.extudata.pointer4 :=0;
+          processing_PDU_SCCP_ExtUnitdata( vl_PDU_SCCP.extudata ); 
+        } 
+
+        //******************************************************************
+        //Connection request received
+        //******************************************************************
+        else if (ischosen(vl_PDU_SCCP.connrequest))
+        { 
+    //      vl_PDU_SCCP.connrequest.pointer1 :=2;
+    //      vl_PDU_SCCP.connrequest.pointer2 :=0;
+          processing_PDU_SCCP_ConnectionRequest( vl_PDU_SCCP.connrequest ); 
+        } 
+
+        //******************************************************************
+        //Connection confirm received
+        //******************************************************************
+        else if (ischosen(vl_PDU_SCCP.connconfirm))
+        { 
+    //      vl_PDU_SCCP.connconfirm.pointer1 :=1;
+          processing_PDU_SCCP_ConnectionConfirm( vl_PDU_SCCP.connconfirm ); 
+        } 
+
+        //******************************************************************
+        //Released received
+        //******************************************************************
+        else if (ischosen(vl_PDU_SCCP.released))
+        { 
+    //      vl_PDU_SCCP.released.pointer1 :=1;
+          processing_PDU_SCCP_Released( vl_PDU_SCCP.released ); 
+        } 
+
+        //******************************************************************
+        //Release complete received
+        //******************************************************************
+        else if (ischosen(vl_PDU_SCCP.relcomp))
+        { 
+          processing_PDU_SCCP_ReleaseComplete( vl_PDU_SCCP.relcomp ); 
+        } 
+
+        //******************************************************************
+        //Unitdata service  received
+        //******************************************************************
+        else if (ischosen(vl_PDU_SCCP.udataserv))
+        { 
+    //      vl_PDU_SCCP.udataserv.pointer1 :=3;
+    //      vl_PDU_SCCP.udataserv.pointer2 :=0;
+    //      vl_PDU_SCCP.udataserv.pointer3 :=0;
+          processing_PDU_SCCP_UnitdataService( vl_PDU_SCCP.udataserv ); 
+        } 
+
+        //******************************************************************
+        //PDU_Error  received
+        //******************************************************************
+        else if (ischosen(vl_PDU_SCCP.pduerror))
+        { 
+          processing_PDU_SCCP_ProtDataUnitError( vl_PDU_SCCP.pduerror ); 
+        } 
+
+        //******************************************************************
+        //Inactivity test received
+        //******************************************************************
+        else if (ischosen(vl_PDU_SCCP.inacttest))
+        { 
+          processing_PDU_SCCP_InactivityTest( vl_PDU_SCCP.inacttest ); 
+        } 
+
+        //******************************************************************
+        //Reset request  received
+        //******************************************************************
+        else if (ischosen(vl_PDU_SCCP.resetreq))
+        { 
+          processing_PDU_SCCP_ResetRequest( vl_PDU_SCCP.resetreq ); 
+        } 
+
+        //******************************************************************
+        //Reset confirm  received
+        //******************************************************************
+        else if (ischosen(vl_PDU_SCCP.resconf))
+        { 
+          processing_PDU_SCCP_ResetConfirm( vl_PDU_SCCP.resconf ); 
+        } 
+
+        //******************************************************************
+        //Connection refused received
+        //******************************************************************
+        else if (ischosen(vl_PDU_SCCP.connrefused))
+        { 
+    //      vl_PDU_SCCP.connrefused.pointer1 :=1;
+          processing_PDU_SCCP_ConnectionRefused( vl_PDU_SCCP.connrefused ); 
+        }
+        else
+        { log ("Unsupported message received and discarded"); }
+      }
+
+    []MTP3_SCCP_PORT.receive 
+      { log("Unsupported or unrecognized message discarded after reception") }
+
+    //******************************************************************
+    //******************************************************************
+    ////start second alternative-message received on user  port
+    //******************************************************************
+    //******************************************************************
+
+    [] SCCP_SP_PORT.check  
+    {//start second alternative
+
+      alt { //startalt1-subalternatives vill follow
+
+          //******************************************************************
+          //N_DATA_req
+          //******************************************************************
+          [] SCCP_SP_PORT.receive( tr_ASP_N_DATA_req)-> value vl_N_DATA_req
+            { processing_ASP_N_DATA_req(vl_N_DATA_req); }
+
+          //******************************************************************
+          //N_UNITDATA_req at originating node
+          //******************************************************************
+          [] SCCP_SP_PORT.receive( tr_ASP_N_UNITDATA_req ) -> value vl_N_UNITDATA_req
+            { processing_ASP_N_UNITDATA_req(vl_N_UNITDATA_req); }
+
+           //******************************************************************
+          //N_CONNECT_req ,   originating  node
+          //******************************************************************
+          [] SCCP_SP_PORT.receive( tr_ASP_N_CONNECT_req) -> value vl_N_CONNECT_req
+            { processing_ASP_N_CONNECT_req( vl_N_CONNECT_req);}
+
+          //******************************************************************
+          //N_CONNECT_resp
+          //******************************************************************
+          [] SCCP_SP_PORT.receive( tr_ASP_N_CONNECT_res)-> value vl_N_CONNECT_res
+          { processing_ASP_N_CONNECT_res(vl_N_CONNECT_res); }
+
+         //******************************************************************
+          //N_DISCONNECT_req
+          //******************************************************************
+          [] SCCP_SP_PORT.receive( tr_ASP_N_DISCONNECT_req)-> value vl_N_DISCONNECT_req
+            { processing_ASP_N_DISCONNECT_req(vl_N_DISCONNECT_req); }
+
+          //******************************************************************
+          //N_RESET_resp  //will not be received!!
+          //******************************************************************
+          //[] SCCP_SP_PORT.receive( tr_ASP_N_RESET_resp)-> value vl_N_RESET_resp;
+
+          //******************************************************************
+          //N_RESET_req  //will not be received!!
+          //******************************************************************
+          //[] SCCP_SP_PORT.receive( tr_ASP_N_RESET_req)-> value vl_N_RESET_req;
+
+          //******************************************************************
+          //If none of the above , then message is removed from the top of the
+          //stack and discarded
+          //******************************************************************
+          [] SCCP_SP_PORT.receive
+            { }
+
+          }//endalt1
+
+    }//end second alternative-message received on user port
+
+        //******************************************************************
+        //connection timer expired
+        //******************************************************************   
+        [v_T_conn_est[0]]        T_conn_est[0].timeout         {Conn_Timer_Expired(0);
+                                                                v_T_conn_est[0] := false;}
+        [v_T_conn_est[1]]        T_conn_est[1].timeout         {Conn_Timer_Expired(1);
+                                                                v_T_conn_est[1] := false;}
+        [v_T_conn_est[2]]        T_conn_est[2].timeout         {Conn_Timer_Expired(2);
+                                                                v_T_conn_est[2] := false;}
+        [v_T_conn_est[3]]        T_conn_est[3].timeout         {Conn_Timer_Expired(3);
+                                                                v_T_conn_est[3] := false;}
+        [v_T_conn_est[4]]        T_conn_est[4].timeout         {Conn_Timer_Expired(4);
+                                                                v_T_conn_est[4] := false;}
+        [v_T_conn_est[5]]        T_conn_est[5].timeout         {Conn_Timer_Expired(5);
+                                                                v_T_conn_est[5] := false;}
+        [v_T_conn_est[6]]        T_conn_est[6].timeout         {Conn_Timer_Expired(6);
+                                                                v_T_conn_est[6] := false;}
+        [v_T_conn_est[7]]        T_conn_est[7].timeout         {Conn_Timer_Expired(7);
+                                                                v_T_conn_est[7] := false;}
+        [v_T_conn_est[8]]        T_conn_est[8].timeout         {Conn_Timer_Expired(8);
+                                                                v_T_conn_est[8] := false;}
+        [v_T_conn_est[9]]        T_conn_est[9].timeout         {Conn_Timer_Expired(9);
+                                                                v_T_conn_est[9] := false;}
+        [v_T_conn_est[10]]        T_conn_est[10].timeout         {Conn_Timer_Expired(10);
+                                                                v_T_conn_est[10] := false;}
+        [v_T_conn_est[11]]        T_conn_est[11].timeout         {Conn_Timer_Expired(11);
+                                                                v_T_conn_est[11] := false;}
+        [v_T_conn_est[12]]        T_conn_est[12].timeout         {Conn_Timer_Expired(12);
+                                                                v_T_conn_est[12] := false;}
+        [v_T_conn_est[13]]        T_conn_est[13].timeout         {Conn_Timer_Expired(13);
+                                                                v_T_conn_est[13] := false;}
+        [v_T_conn_est[14]]        T_conn_est[14].timeout         {Conn_Timer_Expired(14);
+                                                                v_T_conn_est[14] := false;}
+        [v_T_conn_est[15]]        T_conn_est[15].timeout         {Conn_Timer_Expired(15);
+                                                                v_T_conn_est[15] := false;}
+        
+        //******************************************************************
+        //send inactivity timer expired
+        //******************************************************************        
+        
+        [v_T_ias[0]]             T_ias[0].timeout              {SendInactivity_Timer_Expired(0);
+                                                                v_T_ias[0] := false;}
+        [v_T_ias[1]]             T_ias[1].timeout              {SendInactivity_Timer_Expired(1);
+                                                                v_T_ias[1] := false;}
+        [v_T_ias[2]]             T_ias[2].timeout              {SendInactivity_Timer_Expired(2);
+                                                                v_T_ias[2] := false;}
+        [v_T_ias[3]]             T_ias[3].timeout              {SendInactivity_Timer_Expired(3);
+                                                                v_T_ias[3] := false;}
+        [v_T_ias[4]]             T_ias[4].timeout              {SendInactivity_Timer_Expired(4);
+                                                                v_T_ias[4] := false;}
+        [v_T_ias[5]]             T_ias[5].timeout              {SendInactivity_Timer_Expired(5);
+                                                                v_T_ias[5] := false;}
+        [v_T_ias[6]]             T_ias[6].timeout              {SendInactivity_Timer_Expired(6);
+                                                                v_T_ias[6] := false;}
+        [v_T_ias[7]]             T_ias[7].timeout              {SendInactivity_Timer_Expired(7);
+                                                                v_T_ias[7] := false;}
+        [v_T_ias[8]]             T_ias[8].timeout              {SendInactivity_Timer_Expired(8);
+                                                                v_T_ias[8] := false;}
+        [v_T_ias[9]]             T_ias[9].timeout              {SendInactivity_Timer_Expired(9);
+                                                                v_T_ias[i] := false;}
+        [v_T_ias[10]]             T_ias[10].timeout              {SendInactivity_Timer_Expired(10);
+                                                                v_T_ias[10] := false;}
+        [v_T_ias[11]]             T_ias[11].timeout              {SendInactivity_Timer_Expired(11);
+                                                                v_T_ias[11] := false;}
+        [v_T_ias[12]]             T_ias[12].timeout              {SendInactivity_Timer_Expired(12);
+                                                                v_T_ias[12] := false;}
+        [v_T_ias[13]]             T_ias[13].timeout              {SendInactivity_Timer_Expired(13);
+                                                                v_T_ias[13] := false;}
+        [v_T_ias[14]]             T_ias[14].timeout              {SendInactivity_Timer_Expired(14);
+                                                                v_T_ias[14] := false;}
+        [v_T_ias[15]]             T_ias[15].timeout              {SendInactivity_Timer_Expired(15);
+                                                                v_T_ias[15] := false;}
+        
+        //******************************************************************
+        //receive inactivity timer expired
+        //******************************************************************        
+        [v_T_iar[0]]             T_iar[0].timeout              {ReceiveInactivity_Timer_Expired(0);
+                                                                v_T_iar[0] := false;}
+        [v_T_iar[1]]             T_iar[1].timeout              {ReceiveInactivity_Timer_Expired(1);
+                                                                v_T_iar[1] := false;}
+        [v_T_iar[2]]             T_iar[2].timeout              {ReceiveInactivity_Timer_Expired(2);
+                                                                v_T_iar[2] := false;}
+        [v_T_iar[3]]             T_iar[3].timeout              {ReceiveInactivity_Timer_Expired(3);
+                                                                v_T_iar[3] := false;}
+        [v_T_iar[4]]             T_iar[4].timeout              {ReceiveInactivity_Timer_Expired(4);
+                                                                v_T_iar[4] := false;}
+        [v_T_iar[5]]             T_iar[5].timeout              {ReceiveInactivity_Timer_Expired(5);
+                                                                v_T_iar[5] := false;}
+        [v_T_iar[6]]             T_iar[6].timeout              {ReceiveInactivity_Timer_Expired(6);
+                                                                v_T_iar[6] := false;}
+        [v_T_iar[7]]             T_iar[7].timeout              {ReceiveInactivity_Timer_Expired(7);
+                                                                v_T_iar[7] := false;}
+        [v_T_iar[8]]             T_iar[8].timeout              {ReceiveInactivity_Timer_Expired(8);
+                                                                v_T_iar[8] := false;}
+        [v_T_iar[9]]             T_iar[9].timeout              {ReceiveInactivity_Timer_Expired(9);
+                                                                v_T_iar[9] := false;}
+        [v_T_iar[10]]             T_iar[10].timeout              {ReceiveInactivity_Timer_Expired(10);
+                                                                v_T_iar[10] := false;}
+        [v_T_iar[11]]             T_iar[11].timeout              {ReceiveInactivity_Timer_Expired(11);
+                                                                v_T_iar[11] := false;}
+        [v_T_iar[12]]             T_iar[12].timeout              {ReceiveInactivity_Timer_Expired(12);
+                                                                v_T_iar[12] := false;}
+        [v_T_iar[13]]             T_iar[13].timeout              {ReceiveInactivity_Timer_Expired(13);
+                                                                v_T_iar[13] := false;}
+        [v_T_iar[14]]             T_iar[14].timeout              {ReceiveInactivity_Timer_Expired(14);
+                                                                v_T_iar[14] := false;}
+        [v_T_iar[15]]             T_iar[15].timeout              {ReceiveInactivity_Timer_Expired(15);
+                                                                v_T_iar[15] := false;}
+         
+        //******************************************************************
+        //release timer expired
+        //******************************************************************        
+        [v_T_rel[0]]             T_rel[0].timeout              {Release_Timer_Expired(0);
+                                                                v_T_rel[0] := false;}
+        [v_T_rel[1]]             T_rel[1].timeout              {Release_Timer_Expired(1);
+                                                                v_T_rel[1] := false;}
+        [v_T_rel[2]]             T_rel[2].timeout              {Release_Timer_Expired(2);
+                                                                v_T_rel[2] := false;}
+        [v_T_rel[3]]             T_rel[3].timeout              {Release_Timer_Expired(3);
+                                                                v_T_rel[3] := false;}
+        [v_T_rel[4]]             T_rel[4].timeout              {Release_Timer_Expired(4);
+                                                                v_T_rel[4] := false;}
+        [v_T_rel[5]]             T_rel[5].timeout              {Release_Timer_Expired(5);
+                                                                v_T_rel[5] := false;}
+        [v_T_rel[6]]             T_rel[6].timeout              {Release_Timer_Expired(6);
+                                                                v_T_rel[6] := false;}
+        [v_T_rel[7]]             T_rel[7].timeout              {Release_Timer_Expired(7);
+                                                                v_T_rel[7] := false;}
+        [v_T_rel[8]]             T_rel[8].timeout              {Release_Timer_Expired(8);
+                                                                v_T_rel[8] := false;}
+        [v_T_rel[9]]             T_rel[9].timeout              {Release_Timer_Expired(9);
+                                                                v_T_rel[9] := false;}
+        [v_T_rel[10]]             T_rel[10].timeout              {Release_Timer_Expired(10);
+                                                                v_T_rel[10] := false;}
+        [v_T_rel[11]]             T_rel[11].timeout              {Release_Timer_Expired(11);
+                                                                v_T_rel[11] := false;}
+        [v_T_rel[12]]             T_rel[12].timeout              {Release_Timer_Expired(12);
+                                                                v_T_rel[12] := false;}
+        [v_T_rel[13]]             T_rel[13].timeout              {Release_Timer_Expired(13);
+                                                                v_T_rel[13] := false;}
+        [v_T_rel[14]]             T_rel[14].timeout              {Release_Timer_Expired(14);
+                                                                v_T_rel[14] := false;}
+        [v_T_rel[15]]             T_rel[15].timeout              {Release_Timer_Expired(15);
+                                                                v_T_rel[15] := false;}
+                
+        //******************************************************************
+        //repeat release timer expired
+        //******************************************************************        
+        
+        [v_T_repeat_rel[0]]             T_repeat_rel[0].timeout              {RepeatRelease_Timer_Expired(0);
+                                                                v_T_repeat_rel[0] := false;}
+        [v_T_repeat_rel[1]]             T_repeat_rel[1].timeout              {RepeatRelease_Timer_Expired(1);
+                                                                v_T_repeat_rel[1] := false;}
+        [v_T_repeat_rel[2]]             T_repeat_rel[2].timeout              {RepeatRelease_Timer_Expired(2);
+                                                                v_T_repeat_rel[2] := false;}
+        [v_T_repeat_rel[3]]             T_repeat_rel[3].timeout              {RepeatRelease_Timer_Expired(3);
+                                                                v_T_repeat_rel[3] := false;}
+        [v_T_repeat_rel[4]]             T_repeat_rel[4].timeout              {RepeatRelease_Timer_Expired(4);
+                                                                v_T_repeat_rel[4] := false;}
+        [v_T_repeat_rel[5]]             T_repeat_rel[5].timeout              {RepeatRelease_Timer_Expired(5);
+                                                                v_T_repeat_rel[5] := false;}
+        [v_T_repeat_rel[6]]             T_repeat_rel[6].timeout              {RepeatRelease_Timer_Expired(6);
+                                                                v_T_repeat_rel[6] := false;}
+        [v_T_repeat_rel[7]]             T_repeat_rel[7].timeout              {RepeatRelease_Timer_Expired(7);
+                                                                v_T_repeat_rel[7] := false;}
+        [v_T_repeat_rel[8]]             T_repeat_rel[8].timeout              {RepeatRelease_Timer_Expired(8);
+                                                                v_T_repeat_rel[8] := false;}
+        [v_T_repeat_rel[9]]             T_repeat_rel[9].timeout              {RepeatRelease_Timer_Expired(9);
+                                                                v_T_repeat_rel[9] := false;}
+        [v_T_repeat_rel[10]]             T_repeat_rel[10].timeout              {RepeatRelease_Timer_Expired(10);
+                                                                v_T_repeat_rel[10] := false;}
+        [v_T_repeat_rel[11]]             T_repeat_rel[11].timeout              {RepeatRelease_Timer_Expired(11);
+                                                                v_T_repeat_rel[11] := false;}
+        [v_T_repeat_rel[12]]             T_repeat_rel[12].timeout              {RepeatRelease_Timer_Expired(12);
+                                                                v_T_repeat_rel[12] := false;}
+        [v_T_repeat_rel[13]]             T_repeat_rel[13].timeout              {RepeatRelease_Timer_Expired(13);
+                                                                v_T_repeat_rel[13] := false;}
+        [v_T_repeat_rel[14]]             T_repeat_rel[14].timeout              {RepeatRelease_Timer_Expired(14);
+                                                                v_T_repeat_rel[14] := false;}
+        [v_T_repeat_rel[15]]             T_repeat_rel[15].timeout              {RepeatRelease_Timer_Expired(15);
+                                                                v_T_repeat_rel[15] := false;}
+        
+        //******************************************************************
+        //interval timer expired
+        //******************************************************************        
+        [v_T_int[0]]             T_int[0].timeout              {Interval_Timer_Expired(0);
+                                                                v_T_int[0] := false;}
+        [v_T_int[1]]             T_int[1].timeout              {Interval_Timer_Expired(1);
+                                                                v_T_int[1] := false;}
+        [v_T_int[2]]             T_int[2].timeout              {Interval_Timer_Expired(2);
+                                                                v_T_int[2] := false;}
+        [v_T_int[3]]             T_int[3].timeout              {Interval_Timer_Expired(3);
+                                                                v_T_int[3] := false;}
+        [v_T_int[4]]             T_int[4].timeout              {Interval_Timer_Expired(4);
+                                                                v_T_int[4] := false;}
+        [v_T_int[5]]             T_int[5].timeout              {Interval_Timer_Expired(5);
+                                                                v_T_int[5] := false;}
+        [v_T_int[6]]             T_int[6].timeout              {Interval_Timer_Expired(6);
+                                                                v_T_int[6] := false;}
+        [v_T_int[7]]             T_int[7].timeout              {Interval_Timer_Expired(7);
+                                                                v_T_int[7] := false;}
+        [v_T_int[8]]             T_int[8].timeout              {Interval_Timer_Expired(8);
+                                                                v_T_int[8] := false;}
+        [v_T_int[9]]             T_int[9].timeout              {Interval_Timer_Expired(9);
+                                                                v_T_int[9] := false;}
+        [v_T_int[10]]             T_int[10].timeout              {Interval_Timer_Expired(10);
+                                                                v_T_int[10] := false;}
+        [v_T_int[11]]             T_int[11].timeout              {Interval_Timer_Expired(11);
+                                                                v_T_int[11] := false;}
+        [v_T_int[12]]             T_int[12].timeout              {Interval_Timer_Expired(12);
+                                                                v_T_int[12] := false;}
+        [v_T_int[13]]             T_int[13].timeout              {Interval_Timer_Expired(13);
+                                                                v_T_int[13] := false;}
+        [v_T_int[14]]             T_int[14].timeout              {Interval_Timer_Expired(14);
+                                                                v_T_int[14] := false;}
+        [v_T_int[15]]             T_int[15].timeout              {Interval_Timer_Expired(15);
+                                                                v_T_int[15] := false;}
+        
+        //******************************************************************
+        //reset timer expired
+        //******************************************************************                       
+        [v_T_reset[0]]             T_reset[0].timeout              {Reset_Timer_Expired(0);
+                                                                v_T_reset[0] := false;}
+        [v_T_reset[1]]             T_reset[1].timeout              {Reset_Timer_Expired(1);
+                                                                v_T_reset[1] := false;}
+        [v_T_reset[2]]             T_reset[2].timeout              {Reset_Timer_Expired(2);
+                                                                v_T_reset[2] := false;}
+        [v_T_reset[3]]             T_reset[3].timeout              {Reset_Timer_Expired(3);
+                                                                v_T_reset[3] := false;}
+        [v_T_reset[4]]             T_reset[4].timeout              {Reset_Timer_Expired(4);
+                                                                v_T_reset[4] := false;}
+        [v_T_reset[5]]             T_reset[5].timeout              {Reset_Timer_Expired(5);
+                                                                v_T_reset[5] := false;}
+        [v_T_reset[6]]             T_reset[6].timeout              {Reset_Timer_Expired(6);
+                                                                v_T_reset[6] := false;}
+        [v_T_reset[7]]             T_reset[7].timeout              {Reset_Timer_Expired(7);
+                                                                v_T_reset[7] := false;}
+        [v_T_reset[8]]             T_reset[8].timeout              {Reset_Timer_Expired(8);
+                                                                v_T_reset[8] := false;}
+        [v_T_reset[9]]             T_reset[9].timeout              {Reset_Timer_Expired(9);
+                                                                v_T_reset[9] := false;}
+        [v_T_reset[10]]             T_reset[10].timeout              {Reset_Timer_Expired(10);
+                                                                v_T_reset[10] := false;}
+        [v_T_reset[11]]             T_reset[11].timeout              {Reset_Timer_Expired(11);
+                                                                v_T_reset[11] := false;}
+        [v_T_reset[12]]             T_reset[12].timeout              {Reset_Timer_Expired(12);
+                                                                v_T_reset[12] := false;}
+        [v_T_reset[13]]             T_reset[13].timeout              {Reset_Timer_Expired(13);
+                                                                v_T_reset[13] := false;}
+        [v_T_reset[14]]             T_reset[14].timeout              {Reset_Timer_Expired(14);
+                                                                v_T_reset[14] := false;}
+        [v_T_reset[15]]             T_reset[15].timeout              {Reset_Timer_Expired(15);
+                                                                v_T_reset[15] := false;}
+        
+        //******************************************************************
+        //internal_reset timer expired-sending internal signals!
+        //******************************************************************                        
+       [v_T_internal_reset[0]]             T_internal_reset[0].timeout              {InternalResetTimer_Expired(0);
+                                                                v_T_internal_reset[0] := false;}
+        [v_T_internal_reset[1]]             T_internal_reset[1].timeout              {InternalResetTimer_Expired(1);
+                                                                v_T_internal_reset[1] := false;}
+        [v_T_internal_reset[2]]             T_internal_reset[2].timeout              {InternalResetTimer_Expired(2);
+                                                                v_T_internal_reset[2] := false;}
+        [v_T_internal_reset[3]]             T_internal_reset[3].timeout              {InternalResetTimer_Expired(3);
+                                                                v_T_internal_reset[3] := false;}
+        [v_T_internal_reset[4]]             T_internal_reset[4].timeout              {InternalResetTimer_Expired(4);
+                                                                v_T_internal_reset[4] := false;}
+        [v_T_internal_reset[5]]             T_internal_reset[5].timeout              {InternalResetTimer_Expired(5);
+                                                                v_T_internal_reset[5] := false;}
+        [v_T_internal_reset[6]]             T_internal_reset[6].timeout              {InternalResetTimer_Expired(6);
+                                                                v_T_internal_reset[6] := false;}
+        [v_T_internal_reset[7]]             T_internal_reset[7].timeout              {InternalResetTimer_Expired(7);
+                                                                v_T_internal_reset[7] := false;}
+        [v_T_internal_reset[8]]             T_internal_reset[8].timeout              {InternalResetTimer_Expired(8);
+                                                                v_T_internal_reset[8] := false;}
+        [v_T_internal_reset[9]]             T_internal_reset[9].timeout              {InternalResetTimer_Expired(9);
+                                                                v_T_internal_reset[9] := false;}
+        [v_T_internal_reset[10]]             T_internal_reset[10].timeout              {InternalResetTimer_Expired(10);
+                                                                v_T_internal_reset[10] := false;}
+        [v_T_internal_reset[11]]             T_internal_reset[11].timeout              {InternalResetTimer_Expired(11);
+                                                                v_T_internal_reset[11] := false;}
+        [v_T_internal_reset[12]]             T_internal_reset[12].timeout              {InternalResetTimer_Expired(12);
+                                                                v_T_internal_reset[12] := false;}
+        [v_T_internal_reset[13]]             T_internal_reset[13].timeout              {InternalResetTimer_Expired(13);
+                                                                v_T_internal_reset[13] := false;}
+        [v_T_internal_reset[14]]             T_internal_reset[14].timeout              {InternalResetTimer_Expired(14);
+                                                                v_T_internal_reset[14] := false;}
+        [v_T_internal_reset[15]]             T_internal_reset[15].timeout              {InternalResetTimer_Expired(15);
+                                                                v_T_internal_reset[15] := false;}
+        
+       //******************************************************************
+       //guard timer expired - no answer to ASP_SCCP_N_CONNECT_ind received
+       //******************************************************************                        
+        [v_T_guard[0]]             T_guard[0].timeout              {GuardTimer_Expired(0);
+                                                                v_T_guard[0] := false;}
+        [v_T_guard[1]]             T_guard[1].timeout              {GuardTimer_Expired(1);
+                                                                v_T_guard[1] := false;}
+        [v_T_guard[2]]             T_guard[2].timeout              {GuardTimer_Expired(2);
+                                                                v_T_guard[2] := false;}
+        [v_T_guard[3]]             T_guard[3].timeout              {GuardTimer_Expired(3);
+                                                                v_T_guard[3] := false;}
+        [v_T_guard[4]]             T_guard[4].timeout              {GuardTimer_Expired(4);
+                                                                v_T_guard[4] := false;}
+        [v_T_guard[5]]             T_guard[5].timeout              {GuardTimer_Expired(5);
+                                                                v_T_guard[5] := false;}
+        [v_T_guard[6]]             T_guard[6].timeout              {GuardTimer_Expired(6);
+                                                                v_T_guard[6] := false;}
+        [v_T_guard[7]]             T_guard[7].timeout              {GuardTimer_Expired(7);
+                                                                v_T_guard[7] := false;}
+        [v_T_guard[8]]             T_guard[8].timeout              {GuardTimer_Expired(8);
+                                                                v_T_guard[8] := false;}
+        [v_T_guard[9]]             T_guard[9].timeout              {GuardTimer_Expired(9);
+                                                                v_T_guard[9] := false;}
+        [v_T_guard[10]]             T_guard[10].timeout              {GuardTimer_Expired(10);
+                                                                v_T_guard[10] := false;}
+        [v_T_guard[11]]             T_guard[11].timeout              {GuardTimer_Expired(11);
+                                                                v_T_guard[11] := false;}
+        [v_T_guard[12]]             T_guard[12].timeout              {GuardTimer_Expired(12);
+                                                                v_T_guard[12] := false;}
+        [v_T_guard[13]]             T_guard[13].timeout              {GuardTimer_Expired(13);
+                                                                v_T_guard[13] := false;}
+        [v_T_guard[14]]             T_guard[14].timeout              {GuardTimer_Expired(14);
+                                                                v_T_guard[14] := false;}
+        [v_T_guard[15]]             T_guard[15].timeout              {GuardTimer_Expired(15);
+                                                                v_T_guard[15] := false;}
+
+
+    }//endalt0
+
+  //******************************************************************
+  }//endwhile
+  //******************************************************************
+
+}//endfunction ScanEvents
+
+//******************************************************************
+}//endgroup SCCPFunctions
+//******************************************************************
+
+}//endmodule