diff --git a/tests/msc_vlr/msc_vlr_test_no_authen.err b/tests/msc_vlr/msc_vlr_test_no_authen.err
index 90bf697..d75baba 100644
--- a/tests/msc_vlr/msc_vlr_test_no_authen.err
+++ b/tests/msc_vlr/msc_vlr_test_no_authen.err
@@ -6,7 +6,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Updated ID
 DMM LOCATION UPDATING REQUEST: MI(IMSI)=901700000004620 type=IMSI ATTACH
@@ -33,7 +33,7 @@
 DVLR upd_hlr_vlr_fsm(LU:901700000004620){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_AUTH_CIPH
-DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0)
+DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
   lu_result_sent == 0
@@ -99,7 +99,7 @@
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 1 (0x100)
+DREF MSISDN:46071: MSC conn use + release == 1 (0x100: release)
 DREF VLR subscr MSISDN:46071 usage increases to: 4
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 - BSSAP Clear --RAN_GERAN_A--> MS
@@ -109,7 +109,7 @@
   lu_result_sent == 1
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -128,7 +128,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000004620
 DMM Subscr_Conn(CM_SERVICE_REQ:901700000004620){SUBSCR_CONN_S_NEW}: Updated ID
@@ -150,23 +150,23 @@
 DVLR Process_Access_Request_VLR(CM_SERVICE_REQ:901700000004620){PR_ARQ_S_DONE}: Process Access Request result: PASSED
 - sending CM Service Accept for MSISDN:46071
 DMM Subscr_Conn(CM_SERVICE_REQ:901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_ACCEPTED
-DREF MSISDN:46071: MSC conn use + cm_service == 2 (0x9)
+DREF MSISDN:46071: MSC conn use + cm_service == 2 (0x9: compl_l3,cm_service)
 DMM Subscr_Conn(CM_SERVICE_REQ:901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(CM_SERVICE_REQ:901700000004620){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_has_active_transactions: still awaiting first request after a CM Service Request
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 DMM Subscr_Conn(CM_SERVICE_REQ:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(CM_SERVICE_REQ:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Event SUBSCR_CONN_E_COMPLETE_LAYER_3 not permitted
-DREF MSISDN:46071: MSC conn use - compl_l3 == 1 (0x8)
+DREF MSISDN:46071: MSC conn use - compl_l3 == 1 (0x8: cm_service)
   cm_service_result_sent == 1
 msc_subscr_conn_is_accepted() == true
 - a USSD request is serviced
   expecting USSD:
   Your extension is 46071
   MSC <--RAN_GERAN_A-- MS: NCSS:0x3b
-DREF MSISDN:46071: MSC conn use + dtap == 2 (0xa)
+DREF MSISDN:46071: MSC conn use + dtap == 2 (0xa: dtap,cm_service)
 DRLL Dispatching 04.08 message NCSS:0x3b (0xb:0x3b)
 DMM MSISDN:46071: rx msg NCSS:0x3b: received_cm_service_request changes to false
-DREF MSISDN:46071: MSC conn use - cm_service == 1 (0x2)
+DREF MSISDN:46071: MSC conn use - cm_service == 1 (0x2: dtap)
 DMM Subscr_Conn(CM_SERVICE_REQ:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(CM_SERVICE_REQ:901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM USSD: Own number requested
@@ -174,10 +174,10 @@
 DMSC msc_tx 43 bytes to MSISDN:46071 via RAN_GERAN_A
 - DTAP --RAN_GERAN_A--> MS: NCSS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
 - DTAP matches expected message
-DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0: )
 DMM Subscr_Conn(CM_SERVICE_REQ:901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(CM_SERVICE_REQ:901700000004620){SUBSCR_CONN_S_COMMUNICATING}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 1 (0x100)
+DREF MSISDN:46071: MSC conn use + release == 1 (0x100: release)
 DREF VLR subscr MSISDN:46071 usage increases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - BSSAP Clear --RAN_GERAN_A--> MS
@@ -185,7 +185,7 @@
   bssap_clear_sent == 1
 - all requests serviced, conn has been released
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(CM_SERVICE_REQ:901700000004620){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(CM_SERVICE_REQ:901700000004620){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(CM_SERVICE_REQ:901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -219,7 +219,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(IMSI)=901700000004620
 DMM Subscr_Conn(PAGING_RESP:901700000004620){SUBSCR_CONN_S_NEW}: Updated ID
@@ -244,7 +244,7 @@
 DPAG Calling paging cbfn.
 DCC (ti 00 sub MSISDN:46071 callref 40000001) New transaction
 DREF VLR subscr MSISDN:46071 usage increases to: 6
-DREF MSISDN:46071: MSC conn use + trans_sms == 2 (0x21)
+DREF MSISDN:46071: MSC conn use + trans_sms == 2 (0x21: compl_l3,trans_sms)
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A
 - DTAP --RAN_GERAN_A--> MS: SMS:0x01: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
@@ -254,7 +254,7 @@
 DREF VLR subscr MSISDN:46071 usage decreases to: 4
 DMM Subscr_Conn(PAGING_RESP:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(PAGING_RESP:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Event SUBSCR_CONN_E_COMPLETE_LAYER_3 not permitted
-DREF MSISDN:46071: MSC conn use - compl_l3 == 1 (0x20)
+DREF MSISDN:46071: MSC conn use - compl_l3 == 1 (0x20: trans_sms)
   dtap_tx_confirmed == 1
   paging_stopped == 1
 - SMS was delivered, no requests pending for subscr
@@ -265,15 +265,15 @@
   llist_count(&net->subscr_conns) == 1
 - MS replies with CP-ACK for received SMS
   MSC <--RAN_GERAN_A-- MS: SMS:0x04
-DREF MSISDN:46071: MSC conn use + dtap == 2 (0x22)
+DREF MSISDN:46071: MSC conn use + dtap == 2 (0x22: dtap,trans_sms)
 DRLL Dispatching 04.08 message SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(PAGING_RESP:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(PAGING_RESP:901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
-DREF MSISDN:46071: MSC conn use - dtap == 1 (0x20)
+DREF MSISDN:46071: MSC conn use - dtap == 1 (0x20: trans_sms)
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
   MSC <--RAN_GERAN_A-- MS: SMS:0x01
-DREF MSISDN:46071: MSC conn use + dtap == 2 (0x22)
+DREF MSISDN:46071: MSC conn use + dtap == 2 (0x22: dtap,trans_sms)
 DRLL Dispatching 04.08 message SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(PAGING_RESP:901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:46071 via RAN_GERAN_A
@@ -281,11 +281,11 @@
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
-DREF MSISDN:46071: MSC conn use - trans_sms == 1 (0x2)
-DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - trans_sms == 1 (0x2: dtap)
+DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0: )
 DMM Subscr_Conn(PAGING_RESP:901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(PAGING_RESP:901700000004620){SUBSCR_CONN_S_COMMUNICATING}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 1 (0x100)
+DREF MSISDN:46071: MSC conn use + release == 1 (0x100: release)
 DREF VLR subscr MSISDN:46071 usage increases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - BSSAP Clear --RAN_GERAN_A--> MS
@@ -293,7 +293,7 @@
   bssap_clear_sent == 1
 - SMS is done, conn is gone
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(PAGING_RESP:901700000004620){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(PAGING_RESP:901700000004620){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(PAGING_RESP:901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -311,7 +311,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
 DREF VLR subscr MSISDN:46071 usage increases to: 2
@@ -323,12 +323,12 @@
 DREF freeing VLR subscr MSISDN:46071
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_CN_CLOSE
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF unknown: MSC conn use + release == 2 (0x101)
+DREF unknown: MSC conn use + release == 2 (0x101: compl_l3,release)
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF unknown: MSC conn use - compl_l3 == 1 (0x100)
+DREF unknown: MSC conn use - compl_l3 == 1 (0x100: release)
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF unknown: MSC conn use - release == 0 (0x0)
+DREF unknown: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -346,7 +346,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Updated ID
 DMM LOCATION UPDATING REQUEST: MI(IMSI)=901700000004620 type=IMSI ATTACH
@@ -373,7 +373,7 @@
 DVLR upd_hlr_vlr_fsm(LU:901700000004620){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_AUTH_CIPH
-DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0)
+DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
   lu_result_sent == 0
@@ -453,7 +453,7 @@
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - MS sends TMSI Realloc Complete
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
-DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2)
+DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(LU:901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
@@ -470,15 +470,15 @@
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 2 (0x102)
+DREF MSISDN:46071: MSC conn use + release == 2 (0x102: dtap,release)
 DREF VLR subscr MSISDN:46071 usage increases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100)
+DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100: release)
   bssap_clear_sent == 1
 - LU was successful, and the conn has already been closed
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -504,7 +504,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(TMSI)=50462976
 DMM Subscr_Conn(CM_SERVICE_REQ:50462976){SUBSCR_CONN_S_NEW}: Updated ID
@@ -526,23 +526,23 @@
 DVLR Process_Access_Request_VLR(CM_SERVICE_REQ:50462976){PR_ARQ_S_DONE}: Process Access Request result: PASSED
 - sending CM Service Accept for MSISDN:46071
 DMM Subscr_Conn(CM_SERVICE_REQ:50462976){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_ACCEPTED
-DREF MSISDN:46071: MSC conn use + cm_service == 2 (0x9)
+DREF MSISDN:46071: MSC conn use + cm_service == 2 (0x9: compl_l3,cm_service)
 DMM Subscr_Conn(CM_SERVICE_REQ:50462976){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(CM_SERVICE_REQ:50462976){SUBSCR_CONN_S_ACCEPTED}: subscr_conn_fsm_has_active_transactions: still awaiting first request after a CM Service Request
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 DMM Subscr_Conn(CM_SERVICE_REQ:50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(CM_SERVICE_REQ:50462976){SUBSCR_CONN_S_ACCEPTED}: Event SUBSCR_CONN_E_COMPLETE_LAYER_3 not permitted
-DREF MSISDN:46071: MSC conn use - compl_l3 == 1 (0x8)
+DREF MSISDN:46071: MSC conn use - compl_l3 == 1 (0x8: cm_service)
   cm_service_result_sent == 1
 msc_subscr_conn_is_accepted() == true
 - a USSD request is serviced
   expecting USSD:
   Your extension is 46071
   MSC <--RAN_GERAN_A-- MS: NCSS:0x3b
-DREF MSISDN:46071: MSC conn use + dtap == 2 (0xa)
+DREF MSISDN:46071: MSC conn use + dtap == 2 (0xa: dtap,cm_service)
 DRLL Dispatching 04.08 message NCSS:0x3b (0xb:0x3b)
 DMM MSISDN:46071: rx msg NCSS:0x3b: received_cm_service_request changes to false
-DREF MSISDN:46071: MSC conn use - cm_service == 1 (0x2)
+DREF MSISDN:46071: MSC conn use - cm_service == 1 (0x2: dtap)
 DMM Subscr_Conn(CM_SERVICE_REQ:50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(CM_SERVICE_REQ:50462976){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM USSD: Own number requested
@@ -550,17 +550,17 @@
 DMSC msc_tx 43 bytes to MSISDN:46071 via RAN_GERAN_A
 - DTAP --RAN_GERAN_A--> MS: NCSS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
 - DTAP matches expected message
-DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0: )
 DMM Subscr_Conn(CM_SERVICE_REQ:50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(CM_SERVICE_REQ:50462976){SUBSCR_CONN_S_COMMUNICATING}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 1 (0x100)
+DREF MSISDN:46071: MSC conn use + release == 1 (0x100: release)
 DREF VLR subscr MSISDN:46071 usage increases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - BSSAP Clear --RAN_GERAN_A--> MS
   bssap_clear_sent == 1
 - all requests serviced, conn has been released
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(CM_SERVICE_REQ:50462976){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(CM_SERVICE_REQ:50462976){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(CM_SERVICE_REQ:50462976){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -594,7 +594,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(TMSI)=50462976
 DMM Subscr_Conn(PAGING_RESP:50462976){SUBSCR_CONN_S_NEW}: Updated ID
@@ -619,7 +619,7 @@
 DPAG Calling paging cbfn.
 DCC (ti 00 sub MSISDN:46071 callref 40000002) New transaction
 DREF VLR subscr MSISDN:46071 usage increases to: 6
-DREF MSISDN:46071: MSC conn use + trans_sms == 2 (0x21)
+DREF MSISDN:46071: MSC conn use + trans_sms == 2 (0x21: compl_l3,trans_sms)
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A
 - DTAP --RAN_GERAN_A--> MS: SMS:0x01: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
@@ -629,7 +629,7 @@
 DREF VLR subscr MSISDN:46071 usage decreases to: 4
 DMM Subscr_Conn(PAGING_RESP:50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(PAGING_RESP:50462976){SUBSCR_CONN_S_ACCEPTED}: Event SUBSCR_CONN_E_COMPLETE_LAYER_3 not permitted
-DREF MSISDN:46071: MSC conn use - compl_l3 == 1 (0x20)
+DREF MSISDN:46071: MSC conn use - compl_l3 == 1 (0x20: trans_sms)
   dtap_tx_confirmed == 1
   paging_stopped == 1
 - SMS was delivered, no requests pending for subscr
@@ -640,15 +640,15 @@
   llist_count(&net->subscr_conns) == 1
 - MS replies with CP-ACK for received SMS
   MSC <--RAN_GERAN_A-- MS: SMS:0x04
-DREF MSISDN:46071: MSC conn use + dtap == 2 (0x22)
+DREF MSISDN:46071: MSC conn use + dtap == 2 (0x22: dtap,trans_sms)
 DRLL Dispatching 04.08 message SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(PAGING_RESP:50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(PAGING_RESP:50462976){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
-DREF MSISDN:46071: MSC conn use - dtap == 1 (0x20)
+DREF MSISDN:46071: MSC conn use - dtap == 1 (0x20: trans_sms)
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
   MSC <--RAN_GERAN_A-- MS: SMS:0x01
-DREF MSISDN:46071: MSC conn use + dtap == 2 (0x22)
+DREF MSISDN:46071: MSC conn use + dtap == 2 (0x22: dtap,trans_sms)
 DRLL Dispatching 04.08 message SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(PAGING_RESP:50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:46071 via RAN_GERAN_A
@@ -656,11 +656,11 @@
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
-DREF MSISDN:46071: MSC conn use - trans_sms == 1 (0x2)
-DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - trans_sms == 1 (0x2: dtap)
+DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0: )
 DMM Subscr_Conn(PAGING_RESP:50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(PAGING_RESP:50462976){SUBSCR_CONN_S_COMMUNICATING}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 1 (0x100)
+DREF MSISDN:46071: MSC conn use + release == 1 (0x100: release)
 DREF VLR subscr MSISDN:46071 usage increases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - BSSAP Clear --RAN_GERAN_A--> MS
@@ -668,7 +668,7 @@
   bssap_clear_sent == 1
 - SMS is done, conn is gone
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(PAGING_RESP:50462976){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(PAGING_RESP:50462976){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(PAGING_RESP:50462976){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -687,7 +687,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DMM Subscr_Conn(LU:50462976){SUBSCR_CONN_S_NEW}: Updated ID
 DMM LOCATION UPDATING REQUEST: MI(TMSI)=50462976 type=IMSI ATTACH
@@ -712,7 +712,7 @@
 DVLR upd_hlr_vlr_fsm(LU:50462976){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
 DMM Subscr_Conn(LU:50462976){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(LU:50462976){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_AUTH_CIPH
-DREF MSISDN:46071: MSC conn use - compl_l3 == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - compl_l3 == 0 (0x0: )
 DMM Subscr_Conn(LU:50462976){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:50462976){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
   lu_result_sent == 0
@@ -792,7 +792,7 @@
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - MS sends TMSI Realloc Complete
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
-DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2)
+DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(LU:50462976){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
@@ -808,15 +808,15 @@
 DMM Subscr_Conn(LU:50462976){SUBSCR_CONN_S_AUTH_CIPH}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(LU:50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:50462976){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 2 (0x102)
+DREF MSISDN:46071: MSC conn use + release == 2 (0x102: dtap,release)
 DREF VLR subscr MSISDN:46071 usage increases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100)
+DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100: release)
   bssap_clear_sent == 1
 - LU was successful, and the conn has already been closed
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(LU:50462976){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:50462976){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(LU:50462976){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -842,7 +842,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(TMSI)=117835012
 DREF VLR subscr MSISDN:46071 usage increases to: 2
@@ -854,12 +854,12 @@
 DREF freeing VLR subscr MSISDN:46071
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_CN_CLOSE
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF unknown: MSC conn use + release == 2 (0x101)
+DREF unknown: MSC conn use + release == 2 (0x101: compl_l3,release)
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF unknown: MSC conn use - compl_l3 == 1 (0x100)
+DREF unknown: MSC conn use - compl_l3 == 1 (0x100: release)
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF unknown: MSC conn use - release == 0 (0x0)
+DREF unknown: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -877,7 +877,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Updated ID
 DMM LOCATION UPDATING REQUEST: MI(IMSI)=901700000004620 type=IMSI ATTACH
@@ -904,7 +904,7 @@
 DVLR upd_hlr_vlr_fsm(LU:901700000004620){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_AUTH_CIPH
-DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0)
+DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
   lu_result_sent == 0
@@ -980,7 +980,7 @@
 DRLL subscr MSISDN:46071: Message not permitted for initial conn: SMS:0x01
 - MS replies with an Identity Response
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
-DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2)
+DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI)=423423423423420
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=423423423423420
@@ -999,16 +999,16 @@
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 2 (0x102)
+DREF MSISDN:46071: MSC conn use + release == 2 (0x102: dtap,release)
 DREF VLR subscr MSISDN:46071 usage increases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100)
+DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100: release)
   bssap_clear_sent == 1
 - LU was successful, and the conn has already been closed
   lu_result_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -1031,7 +1031,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
 DREF VLR subscr MSISDN:46071 usage increases to: 2
@@ -1043,12 +1043,12 @@
 DREF freeing VLR subscr MSISDN:46071
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_CN_CLOSE
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF unknown: MSC conn use + release == 2 (0x101)
+DREF unknown: MSC conn use + release == 2 (0x101: compl_l3,release)
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF unknown: MSC conn use - compl_l3 == 1 (0x100)
+DREF unknown: MSC conn use - compl_l3 == 1 (0x100: release)
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF unknown: MSC conn use - release == 0 (0x0)
+DREF unknown: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -1066,7 +1066,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Updated ID
 DMM LOCATION UPDATING REQUEST: MI(IMSI)=901700000004620 type=IMSI ATTACH
@@ -1093,7 +1093,7 @@
 DVLR upd_hlr_vlr_fsm(LU:901700000004620){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_AUTH_CIPH
-DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0)
+DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
   lu_result_sent == 0
@@ -1169,7 +1169,7 @@
 DRLL subscr MSISDN:46071: Message not permitted for initial conn: SMS:0x01
 - MS replies with an Identity Response
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
-DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2)
+DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI)=423423423423420
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=423423423423420
@@ -1178,7 +1178,7 @@
 DVLR lu_compl_vlr_fsm(LU:901700000004620){LU_COMPL_VLR_S_WAIT_IMEI_TMSI}: lu_compl_vlr_new_tmsi()
 DVLR lu_compl_vlr_fsm(LU:901700000004620){LU_COMPL_VLR_S_WAIT_IMEI_TMSI}: state_chg to LU_COMPL_VLR_S_WAIT_TMSI_CNF
 - sending LU Accept for MSISDN:46071, with TMSI 0x03020100
-DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
 - a LU Accept with a new TMSI was sent, waiting for TMSI Realloc Compl
@@ -1196,7 +1196,7 @@
 DRLL subscr MSISDN:46071: Message not permitted for initial conn: SMS:0x01
 - MS sends TMSI Realloc Complete
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
-DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2)
+DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(LU:901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
@@ -1213,16 +1213,16 @@
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 2 (0x102)
+DREF MSISDN:46071: MSC conn use + release == 2 (0x102: dtap,release)
 DREF VLR subscr MSISDN:46071 usage increases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100)
+DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100: release)
   bssap_clear_sent == 1
 - LU was successful, and the conn has already been closed
   lu_result_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -1246,7 +1246,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
 DREF VLR subscr MSISDN:46071 usage increases to: 2
@@ -1258,12 +1258,12 @@
 DREF freeing VLR subscr MSISDN:46071
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_CN_CLOSE
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF unknown: MSC conn use + release == 2 (0x101)
+DREF unknown: MSC conn use + release == 2 (0x101: compl_l3,release)
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF unknown: MSC conn use - compl_l3 == 1 (0x100)
+DREF unknown: MSC conn use - compl_l3 == 1 (0x100: release)
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF unknown: MSC conn use - release == 0 (0x0)
+DREF unknown: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -1281,7 +1281,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Updated ID
 DMM LOCATION UPDATING REQUEST: MI(IMSI)=901700000004620 type=IMSI ATTACH
@@ -1301,12 +1301,12 @@
 DVLR vlr_lu_fsm(LU:901700000004620){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_IMEISV
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_AUTH_CIPH
-DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0)
+DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
 - MS replies with an Identity Response, causes LU to commence with a GSUP LU request to HLR
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
-DREF IMSI:901700000004620: MSC conn use + dtap == 1 (0x2)
+DREF IMSI:901700000004620: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI-SV)=4234234234234275
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=4234234234234275
@@ -1322,7 +1322,7 @@
 DVLR GSUP tx: 04010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: 04010809710000004026f0
 DVLR upd_hlr_vlr_fsm(LU:901700000004620){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
-DREF IMSI:901700000004620: MSC conn use - dtap == 0 (0x0)
+DREF IMSI:901700000004620: MSC conn use - dtap == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
   lu_result_sent == 0
@@ -1392,7 +1392,7 @@
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 1 (0x100)
+DREF MSISDN:46071: MSC conn use + release == 1 (0x100: release)
 DREF VLR subscr MSISDN:46071 usage increases to: 4
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 - BSSAP Clear --RAN_GERAN_A--> MS
@@ -1402,7 +1402,7 @@
   lu_result_sent == 1
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -1421,7 +1421,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
 DREF VLR subscr MSISDN:46071 usage increases to: 2
@@ -1433,12 +1433,12 @@
 DREF freeing VLR subscr MSISDN:46071
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_CN_CLOSE
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF unknown: MSC conn use + release == 2 (0x101)
+DREF unknown: MSC conn use + release == 2 (0x101: compl_l3,release)
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF unknown: MSC conn use - compl_l3 == 1 (0x100)
+DREF unknown: MSC conn use - compl_l3 == 1 (0x100: release)
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF unknown: MSC conn use - release == 0 (0x0)
+DREF unknown: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -1456,7 +1456,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Updated ID
 DMM LOCATION UPDATING REQUEST: MI(IMSI)=901700000004620 type=IMSI ATTACH
@@ -1476,12 +1476,12 @@
 DVLR vlr_lu_fsm(LU:901700000004620){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_IMEISV
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_AUTH_CIPH
-DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0)
+DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
 - MS replies with an Identity Response, causes LU to commence with a GSUP LU request to HLR
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
-DREF IMSI:901700000004620: MSC conn use + dtap == 1 (0x2)
+DREF IMSI:901700000004620: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI-SV)=4234234234234275
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=4234234234234275
@@ -1497,7 +1497,7 @@
 DVLR GSUP tx: 04010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: 04010809710000004026f0
 DVLR upd_hlr_vlr_fsm(LU:901700000004620){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
-DREF IMSI:901700000004620: MSC conn use - dtap == 0 (0x0)
+DREF IMSI:901700000004620: MSC conn use - dtap == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
   lu_result_sent == 0
@@ -1577,7 +1577,7 @@
 DRLL subscr MSISDN:46071: Message not permitted for initial conn: SMS:0x01
 - MS replies with an Identity Response
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
-DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2)
+DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI)=423423423423420
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=423423423423420
@@ -1596,16 +1596,16 @@
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 2 (0x102)
+DREF MSISDN:46071: MSC conn use + release == 2 (0x102: dtap,release)
 DREF VLR subscr MSISDN:46071 usage increases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100)
+DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100: release)
   bssap_clear_sent == 1
 - LU was successful, and the conn has already been closed
   lu_result_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -1628,7 +1628,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
 DREF VLR subscr MSISDN:46071 usage increases to: 2
@@ -1640,12 +1640,12 @@
 DREF freeing VLR subscr MSISDN:46071
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_CN_CLOSE
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF unknown: MSC conn use + release == 2 (0x101)
+DREF unknown: MSC conn use + release == 2 (0x101: compl_l3,release)
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF unknown: MSC conn use - compl_l3 == 1 (0x100)
+DREF unknown: MSC conn use - compl_l3 == 1 (0x100: release)
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF unknown: MSC conn use - release == 0 (0x0)
+DREF unknown: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -1663,7 +1663,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Updated ID
 DMM LOCATION UPDATING REQUEST: MI(IMSI)=901700000004620 type=IMSI ATTACH
@@ -1683,12 +1683,12 @@
 DVLR vlr_lu_fsm(LU:901700000004620){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_IMEISV
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_AUTH_CIPH
-DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0)
+DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
 - MS replies with an Identity Response, causes LU to commence with a GSUP LU request to HLR
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
-DREF IMSI:901700000004620: MSC conn use + dtap == 1 (0x2)
+DREF IMSI:901700000004620: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI-SV)=4234234234234275
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=4234234234234275
@@ -1704,7 +1704,7 @@
 DVLR GSUP tx: 04010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: 04010809710000004026f0
 DVLR upd_hlr_vlr_fsm(LU:901700000004620){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
-DREF IMSI:901700000004620: MSC conn use - dtap == 0 (0x0)
+DREF IMSI:901700000004620: MSC conn use - dtap == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
   lu_result_sent == 0
@@ -1788,7 +1788,7 @@
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - MS sends TMSI Realloc Complete
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
-DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2)
+DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(LU:901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
@@ -1805,15 +1805,15 @@
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 2 (0x102)
+DREF MSISDN:46071: MSC conn use + release == 2 (0x102: dtap,release)
 DREF VLR subscr MSISDN:46071 usage increases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100)
+DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100: release)
   bssap_clear_sent == 1
 - LU was successful, and the conn has already been closed
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -1833,7 +1833,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Updated ID
 DMM LOCATION UPDATING REQUEST: MI(IMSI)=901700000004620 type=IMSI ATTACH
@@ -1851,12 +1851,12 @@
 DVLR vlr_lu_fsm(LU:901700000004620){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_IMEISV
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_AUTH_CIPH
-DREF MSISDN:46071: MSC conn use - compl_l3 == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - compl_l3 == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
 - MS replies with an Identity Response, causes LU to commence with a GSUP LU request to HLR
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
-DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2)
+DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI-SV)=5234234234234276
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=5234234234234276
@@ -1872,7 +1872,7 @@
 DVLR GSUP tx: 04010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: 04010809710000004026f0
 DVLR upd_hlr_vlr_fsm(LU:901700000004620){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
-DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
   lu_result_sent == 0
@@ -1956,7 +1956,7 @@
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - MS sends TMSI Realloc Complete
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
-DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2)
+DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(LU:901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
@@ -1972,15 +1972,15 @@
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 2 (0x102)
+DREF MSISDN:46071: MSC conn use + release == 2 (0x102: dtap,release)
 DREF VLR subscr MSISDN:46071 usage increases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100)
+DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100: release)
   bssap_clear_sent == 1
 - LU was successful, and the conn has already been closed
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -2006,7 +2006,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(TMSI)=117835012
 DREF VLR subscr MSISDN:46071 usage increases to: 2
@@ -2018,12 +2018,12 @@
 DREF freeing VLR subscr MSISDN:46071
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_CN_CLOSE
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF unknown: MSC conn use + release == 2 (0x101)
+DREF unknown: MSC conn use + release == 2 (0x101: compl_l3,release)
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF unknown: MSC conn use - compl_l3 == 1 (0x100)
+DREF unknown: MSC conn use - compl_l3 == 1 (0x100: release)
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF unknown: MSC conn use - release == 0 (0x0)
+DREF unknown: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -2041,7 +2041,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Updated ID
 DMM LOCATION UPDATING REQUEST: MI(IMSI)=901700000004620 type=IMSI ATTACH
@@ -2061,12 +2061,12 @@
 DVLR vlr_lu_fsm(LU:901700000004620){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_IMEISV
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_COMPLETE_LAYER_3
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_AUTH_CIPH
-DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0)
+DREF IMSI:901700000004620: MSC conn use - compl_l3 == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
 - MS replies with an Identity Response, causes LU to commence with a GSUP LU request to HLR
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
-DREF IMSI:901700000004620: MSC conn use + dtap == 1 (0x2)
+DREF IMSI:901700000004620: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI-SV)=4234234234234275
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=4234234234234275
@@ -2082,7 +2082,7 @@
 DVLR GSUP tx: 04010809710000004026f0
 GSUP --> HLR: OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: 04010809710000004026f0
 DVLR upd_hlr_vlr_fsm(LU:901700000004620){UPD_HLR_VLR_S_INIT}: state_chg to UPD_HLR_VLR_S_WAIT_FOR_DATA
-DREF IMSI:901700000004620: MSC conn use - dtap == 0 (0x0)
+DREF IMSI:901700000004620: MSC conn use - dtap == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
   lu_result_sent == 0
@@ -2162,7 +2162,7 @@
 DRLL subscr MSISDN:46071: Message not permitted for initial conn: SMS:0x01
 - MS replies with an Identity Response
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
-DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2)
+DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI)=423423423423420
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=423423423423420
@@ -2171,7 +2171,7 @@
 DVLR lu_compl_vlr_fsm(LU:901700000004620){LU_COMPL_VLR_S_WAIT_IMEI_TMSI}: lu_compl_vlr_new_tmsi()
 DVLR lu_compl_vlr_fsm(LU:901700000004620){LU_COMPL_VLR_S_WAIT_IMEI_TMSI}: state_chg to LU_COMPL_VLR_S_WAIT_TMSI_CNF
 - sending LU Accept for MSISDN:46071, with TMSI 0x03020100
-DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - dtap == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: Awaiting results for Auth+Ciph, overruling event SUBSCR_CONN_E_UNUSED
 - a LU Accept with a new TMSI was sent, waiting for TMSI Realloc Compl
@@ -2189,7 +2189,7 @@
 DRLL subscr MSISDN:46071: Message not permitted for initial conn: SMS:0x01
 - MS sends TMSI Realloc Complete
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
-DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2)
+DREF MSISDN:46071: MSC conn use + dtap == 1 (0x2: dtap)
 DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(LU:901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
@@ -2206,16 +2206,16 @@
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_AUTH_CIPH}: state_chg to SUBSCR_CONN_S_ACCEPTED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF MSISDN:46071: MSC conn use + release == 2 (0x102)
+DREF MSISDN:46071: MSC conn use + release == 2 (0x102: dtap,release)
 DREF VLR subscr MSISDN:46071 usage increases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100)
+DREF MSISDN:46071: MSC conn use - dtap == 1 (0x100: release)
   bssap_clear_sent == 1
 - LU was successful, and the conn has already been closed
   lu_result_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF MSISDN:46071: MSC conn use - release == 0 (0x0)
+DREF MSISDN:46071: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn(LU:901700000004620){SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)
@@ -2240,7 +2240,7 @@
   MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Allocated
-DREF unknown: MSC conn use + compl_l3 == 1 (0x1)
+DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
 DREF VLR subscr MSISDN:46071 usage increases to: 2
@@ -2252,12 +2252,12 @@
 DREF freeing VLR subscr MSISDN:46071
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: Received Event SUBSCR_CONN_E_CN_CLOSE
 DMM Subscr_Conn{SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_RELEASING
-DREF unknown: MSC conn use + release == 2 (0x101)
+DREF unknown: MSC conn use + release == 2 (0x101: compl_l3,release)
 - BSSAP Clear --RAN_GERAN_A--> MS
-DREF unknown: MSC conn use - compl_l3 == 1 (0x100)
+DREF unknown: MSC conn use - compl_l3 == 1 (0x100: release)
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
-DREF unknown: MSC conn use - release == 0 (0x0)
+DREF unknown: MSC conn use - release == 0 (0x0: )
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: Received Event SUBSCR_CONN_E_UNUSED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASING}: state_chg to SUBSCR_CONN_S_RELEASED
 DMM Subscr_Conn{SUBSCR_CONN_S_RELEASED}: Terminating (cause = OSMO_FSM_TERM_REGULAR)