diff --git a/selftest/Selftest.cfg b/selftest/Selftest.cfg
new file mode 100644
index 0000000..1eed017
--- /dev/null
+++ b/selftest/Selftest.cfg
@@ -0,0 +1,19 @@
+[LOGGING]
+#FileMask := LOG_ALL | TTCN_DEBUG | TTCN_MATCHING | DEBUG_ENCDEC;
+#ConsoleMask := ERROR | WARNING | TESTCASE | TTCN_MATCHING | DEBUG_ENCDEC
+#FileMask := LOG_ALL | TTCN_MATCHING;
+BSSAP.FileMask := LOG_NOTHING;
+"VirtMSC-M3UA".FileMask := ERROR | WARNING;
+"VirtMSC-SCCP".FileMask := ERROR | WARNING;
+"IPA0-RSL-IPA".FileMask := ERROR | WARNING;
+"IPA0-CTRL-IPA".FileMask := ERROR | WARNING;
+mtc.FileMask := LOG_ALL | TTCN_DEBUG | TTCN_MATCHING | DEBUG_ENCDEC;
+
+[TESTPORT_PARAMETERS]
+
+[MODULE_PARAMETERS]
+
+[MAIN_CONTROLLER]
+
+[EXECUTE]
+Selftest.control
diff --git a/selftest/Selftest.ttcn b/selftest/Selftest.ttcn
new file mode 100644
index 0000000..1c340b7
--- /dev/null
+++ b/selftest/Selftest.ttcn
@@ -0,0 +1,104 @@
+module Selftest {
+
+import from General_Types all;
+import from Osmocom_Types all;
+import from GSM_Types all;
+import from IPL4asp_Types all;
+import from IPL4asp_PortType all;
+import from MTP3asp_PortType all;
+
+import from BSSAP_Types all;
+//import from BSSAP_Adapter all;
+import from BSSAP_CodecPort all;
+import from BSSMAP_Templates all;
+import from IPA_Emulation all;
+import from IPA_Types all;
+import from RSL_Types all;
+
+import from Osmocom_CTRL_Functions all;
+import from Osmocom_CTRL_Types all;
+
+import from MobileL3_CommonIE_Types all;
+import from L3_Templates all;
+import from GSM_RR_Types all;
+
+
+type component IPA_selftest_CT {
+	/* upper end of IPA_Emulation */
+	port MTP3asp_PT IPA_MTP3;
+	port IPA_MGCP_PT IPA_MGCP;
+	port IPA_RSL_PT IPA_RSL;
+	port IPA_CTRL_PT IPA_CTRL;
+	port IPA_SP_PT IPA_SP;
+
+	var IPA_Emulation_CT vc_IPA;
+
+	/* raw IP port */
+	port IPL4asp_PT IP;
+	var ConnectionId g_ip_conn_id := -1;
+}
+
+
+function f_ipa_srv_init() runs on IPA_selftest_CT {
+	vc_IPA := IPA_Emulation_CT.create("IPA_Emulation");
+	map(vc_IPA:IPA_PORT, system: IPA_CODEC_PT);
+	connect(vc_IPA:IPA_MGCP_PORT, self:IPA_MGCP);
+	connect(vc_IPA:IPA_RSL_PORT, self:IPA_RSL);
+	connect(vc_IPA:IPA_CTRL_PORT, self:IPA_CTRL);
+	connect(vc_IPA:MTP3_SP_PORT, self:IPA_MTP3);
+	vc_IPA.start(IPA_Emulation.main_server("127.0.0.1", 55555));
+}
+
+function f_ipa_wait_up() runs on IPA_selftest_CT {
+	interleave {
+	[] IPA_RSL.receive(t_ASP_IPA_EVT_UD(ASP_IPA_EVENT_UP));
+	[] IPA_CTRL.receive(t_ASP_IPA_EVT_UD(ASP_IPA_EVENT_UP));
+	}
+}
+
+function f_tcp_client_init() runs on IPA_selftest_CT {
+	var Result res;
+	map(self:IP, system:IP);
+	res := IPL4asp_PortType.f_IPL4_connect(IP, "127.0.0.1", 55555, "", -1,-1, {tcp:={}});
+	g_ip_conn_id := res.connId;
+}
+
+
+template ASP_Send ts_ASP_Send(ConnectionId id, template octetstring tx) := {
+	connId := id,
+	proto := omit,
+	msg := tx
+}
+
+testcase TC_ipa_fragment() runs on IPA_selftest_CT {
+	var integer i;
+	var octetstring tx_buf;
+	var RSL_Message rsl;
+
+	f_ipa_srv_init();
+	f_tcp_client_init();
+	f_ipa_wait_up();
+
+	rsl := valueof(ts_RSL_CHAN_RQD('23'O, 2342));
+	tx_buf := enc_PDU_IPA(valueof(ts_PDU_IPA(IPAC_PROTO_RSL_TRX0, enc_RSL_Message(rsl))));
+	/* send in rapid sequence to fill multiple messages in one TCP segment */
+	for (i := 0; i < 10; i := i+1) {
+		IP.send(ts_ASP_Send(g_ip_conn_id, tx_buf));
+	}
+	timer T:= 1.0;
+	T.start;
+	T.timeout;
+
+	for (i := 0; i < 10; i := i+1) {
+		IPA_RSL.receive(tr_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0, rsl));
+	}
+	setverdict(pass);
+}
+
+
+control {
+	execute( TC_ipa_fragment() );
+}
+
+
+}
diff --git a/selftest/gen_links.sh b/selftest/gen_links.sh
new file mode 100755
index 0000000..b1e9ca1
--- /dev/null
+++ b/selftest/gen_links.sh
@@ -0,0 +1,56 @@
+#!/bin/sh
+
+BASEDIR=~/projects/git
+
+gen_links() {
+	DIR=$1
+	FILES=$*
+	for f in $FILES; do
+		echo "Linking $f"
+		ln -sf $DIR/$f $f
+	done
+}
+
+#DIR=$BASEDIR/titan.TestPorts.UNIX_DOMAIN_SOCKETasp/src
+#FILES="UD_PT.cc  UD_PT.hh  UD_PortType.ttcn  UD_Types.ttcn"
+#gen_links $DIR $FILES
+
+DIR=$BASEDIR/titan.Libraries.TCCUsefulFunctions/src
+FILES="TCCInterface_Functions.ttcn TCCConversion_Functions.ttcn TCCConversion.cc TCCConversion.hh TCCInterface.cc TCCInterface_ip.h SDP_EncDec.cc"
+gen_links $DIR $FILES
+
+DIR=$BASEDIR/titan.TestPorts.Common_Components.Socket-API/src
+FILES="Socket_API_Definitions.ttcn"
+gen_links $DIR $FILES
+
+# Required by MGCP and IPA
+DIR=$BASEDIR/titan.TestPorts.IPL4asp/src
+FILES="IPL4asp_Functions.ttcn  IPL4asp_PT.cc  IPL4asp_PT.hh IPL4asp_PortType.ttcn  IPL4asp_Types.ttcn  IPL4asp_discovery.cc IPL4asp_protocol_L234.hh"
+gen_links $DIR $FILES
+
+# required by IPA Emulation
+DIR=../MTP3asp_CNL113337/src
+FILES="MTP3asp_PortType.ttcn  MTP3asp_Types.ttcn"
+gen_links $DIR $FILES
+
+DIR=../SCCP_CNL113341/src
+FILES="SCCP_Emulation.ttcn  SCCP_Mapping.ttcnpp  SCCP_Types.ttcn  SCCPasp_Types.ttcn"
+gen_links $DIR $FILES
+ln -sf SCCP_Mapping.ttcnpp SCCP_Mapping.ttcn
+
+DIR=$BASEDIR/titan.ProtocolModules.BSSMAP_v11.2.0/src
+FILES="BSSAP_Types.ttcn"
+gen_links $DIR $FILES
+
+DIR=$BASEDIR/titan.ProtocolModules.MobileL3_v13.4.0/src
+FILES="MobileL3_CC_Types.ttcn MobileL3_CommonIE_Types.ttcn MobileL3_GMM_SM_Types.ttcn MobileL3_MM_Types.ttcn MobileL3_RRM_Types.ttcn MobileL3_SMS_Types.ttcn MobileL3_SS_Types.ttcn MobileL3_Types.ttcn"
+gen_links $DIR $ILES
+
+DIR=$BASEDIR/titan.ProtocolModules.SDP/src
+FILES="SDP_EncDec.cc SDP_Types.ttcn SDP_parse_.tab.c SDP_parse_.tab.h SDP_parse_parser.h SDP_parser.l
+SDP_parser.y lex.SDP_parse_.c"
+gen_links $DIR $FILES
+
+DIR=../library
+FILES="General_Types.ttcn Osmocom_Types.ttcn GSM_Types.ttcn IPA_Types.ttcn IPA_CodecPort.ttcn IPA_CodecPort_CtrlFunct.ttcn IPA_CodecPort_CtrlFunctDef.cc IPA_Emulation.ttcn L3_Templates.ttcn BSSMAP_Templates.ttcn RLCMAC_CSN1_Types.ttcn GSM_RR_Types.ttcn RSL_Types.ttcn MGCP_Types.ttcn MGCP_Templates.ttcn BSSAP_CodecPort.ttcn Osmocom_CTRL_Types.ttcn Osmocom_CTRL_Functions.ttcn"
+gen_links $DIR $FILES
diff --git a/selftest/regen_makefile.sh b/selftest/regen_makefile.sh
new file mode 100755
index 0000000..b4780a0
--- /dev/null
+++ b/selftest/regen_makefile.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+MAIN=Selftest.ttcn
+
+FILES="*.ttcn IPA_CodecPort_CtrlFunctDef.cc IPL4asp_PT.cc IPL4asp_discovery.cc TCCConversion.cc TCCInterface.cc SDP_EncDec.cc *.c"
+
+ttcn3_makefilegen -l -f $MAIN $FILES
+#sed -i -e 's/# TTCN3_DIR = /TTCN3_DIR = \/usr/' Makefile
+sed -i -e 's/LDFLAGS = /LDFLAGS = -L \/usr\/lib\/titan /' Makefile
+#sed -i -e 's/TTCN3_LIB = ttcn3-parallel/TTCN3_LIB = ttcn3/' Makefile
+sed -i -e 's/CPPFLAGS = -D$(PLATFORM) -I$(TTCN3_DIR)\/include/CPPFLAGS = -D$(PLATFORM) -I$(TTCN3_DIR)\/include -I\/usr\/include\/titan/' Makefile
+
+# for TITAN 6.3.0
+sed -i -e 's/TTCN3_DIR = $/TTCN3_DIR = \/usr/' Makefile
+sed -i -e 's/\/bin\/compiler/\/bin\/ttcn3_compiler/' Makefile