04.08: log protocol discriminators and message types by name

On incoming 04.08 messages, we log only the protocol discriminator in
decimal. Enhance: log pdisc and message type in hex, and also log the
protocol and message type as human readable string.

Also adjust the msc_vlr tests' log statements for wrapped rx/tx functions
of dtap from/to the MS.

Adjust the expected output of msc_vlr_tests.

Change-Id: Ida205d217e304337d816b14fd15e2ee435e7397d
Depends: libosmocore change-id I0fca8e95ed5c2148b1a7440eff3fc9c7583898df

10 files changed, 915 insertions, 901 deletions

diff --git a/tests/msc_vlr/msc_vlr_test_gsm_authen.err b/tests/msc_vlr/msc_vlr_test_gsm_authen.err
index 65370be2e..b6b84edec 100644
--- a/tests/msc_vlr/msc_vlr_test_gsm_authen.err
+++ b/tests/msc_vlr/msc_vlr_test_gsm_authen.err
@@ -1,9 +1,9 @@
 ===== test_gsm_authen
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -55,19 +55,19 @@ DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000004620: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000004620) received res: 2d 8b 2c 3e 
@@ -162,10 +162,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, 2nd auth vector
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
@@ -195,18 +195,18 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts with a CM Service Accept
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:46071: MM GSM AUTHENTICATION RESPONSE (sres = 20bde240)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:46071) received res: 20 bd e2 40 
@@ -242,16 +242,16 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - a USSD request is serviced
   expecting USSD:
   Your extension is 46071

-  rx from MS: pdisc=0x0b msg_type=0x3b
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_NC_SS:0x3b
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=11
-DMM MSISDN:46071 pdisc=11 msg_type=0x3b: received_cm_service_request changes to false
+DRLL Dispatching 04.08 message GSM48_PDISC_NC_SS:0x3b (0xb:0x3b)
+DMM MSISDN:46071: rx msg GSM48_PDISC_NC_SS:0x3b: received_cm_service_request changes to false
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM USSD: Own number requested
 DMM MSISDN:46071: MSISDN = 46071
 DMSC msc_tx 43 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_NC_SS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
 - DTAP matches expected message
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
@@ -288,10 +288,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 4
   llist_count(&vsub->cs.requests) == 1
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 - MS replies with Paging Response, and VLR sends Auth Request with third key
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
@@ -320,18 +320,18 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts and sends pending SMS
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:46071: MM GSM AUTHENTICATION RESPONSE (sres = a29514ae)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:46071) received res: a2 95 14 ae 
@@ -361,7 +361,7 @@ DPAG Calling paging cbfn.
 DREF VLR subscr MSISDN:46071 usage increases to: 5
 DREF MSISDN:46071: MSC conn use + 1 == 3
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x01: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 4
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
@@ -378,9 +378,9 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 4
 - conn is still open to wait for SMS ack dance
   llist_count(&net->subscr_conns) == 1
 - MS replies with CP-ACK for received SMS
-  rx from MS: pdisc=0x89 msg_type=0x04
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x04
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
@@ -388,12 +388,12 @@ DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: bump: connection
 DREF MSISDN:46071: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
-  rx from MS: pdisc=0x89 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x01
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 0904
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x04: 0904
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
@@ -418,10 +418,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+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
 DMM IMSI DETACH for MSISDN:46071
@@ -439,10 +439,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_gsm_authen_tmsi
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -494,19 +494,19 @@ DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000004620: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000004620) received res: 2d 8b 2c 3e 
@@ -577,14 +577,14 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   lu_result_sent == 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
 DREF VLR subscr MSISDN:46071 usage increases to: 2
   vsub != NULL == 1
@@ -593,9 +593,9 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
   vsub->tmsi == 0xffffffff
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - MS sends TMSI Realloc Complete
-  rx from MS: pdisc=0x05 msg_type=0x5b
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
@@ -637,10 +637,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - after a while, a new conn sends a CM Service Request using above TMSI. VLR responds with Auth Req, 2nd auth vector
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(TMSI)=50462976
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_INIT}: Allocated
@@ -670,18 +670,18 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts with a CM Service Accept
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:46071: MM GSM AUTHENTICATION RESPONSE (sres = 20bde240)
 DVLR VLR_Authenticate(50462976){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:46071) received res: 20 bd e2 40 
@@ -717,16 +717,16 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - a USSD request is serviced
   expecting USSD:
   Your extension is 46071

-  rx from MS: pdisc=0x0b msg_type=0x3b
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_NC_SS:0x3b
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=11
-DMM MSISDN:46071 pdisc=11 msg_type=0x3b: received_cm_service_request changes to false
+DRLL Dispatching 04.08 message GSM48_PDISC_NC_SS:0x3b (0xb:0x3b)
+DMM MSISDN:46071: rx msg GSM48_PDISC_NC_SS:0x3b: received_cm_service_request changes to false
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM USSD: Own number requested
 DMM MSISDN:46071: MSISDN = 46071
 DMSC msc_tx 43 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_NC_SS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
 - DTAP matches expected message
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
@@ -763,10 +763,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 4
   llist_count(&vsub->cs.requests) == 1
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 - MS replies with Paging Response using TMSI, and VLR sends Auth Request with third key
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(TMSI)=50462976
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_INIT}: Allocated
@@ -795,18 +795,18 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts and sends pending SMS
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:46071: MM GSM AUTHENTICATION RESPONSE (sres = a29514ae)
 DVLR VLR_Authenticate(50462976){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:46071) received res: a2 95 14 ae 
@@ -836,7 +836,7 @@ DPAG Calling paging cbfn.
 DREF VLR subscr MSISDN:46071 usage increases to: 5
 DREF MSISDN:46071: MSC conn use + 1 == 3
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x01: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 4
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
@@ -853,9 +853,9 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 4
 - conn is still open to wait for SMS ack dance
   llist_count(&net->subscr_conns) == 1
 - MS replies with CP-ACK for received SMS
-  rx from MS: pdisc=0x89 msg_type=0x04
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x04
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
@@ -863,12 +863,12 @@ DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: bump: connection still h
 DREF MSISDN:46071: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
-  rx from MS: pdisc=0x89 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x01
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 0904
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x04: 0904
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
@@ -894,10 +894,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - subscriber sends LU Request, this time with the TMSI
 - Location Update request causes an Auth Req to MS
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -926,9 +926,9 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:46071: MM GSM AUTHENTICATION RESPONSE (sres = 5afc8d72)
 DVLR VLR_Authenticate(50462976){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:46071) received res: 5a fc 8d 72 
@@ -999,14 +999,14 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 2
   lu_result_sent == 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
 DREF VLR subscr MSISDN:46071 usage increases to: 3
   vsub != NULL == 1
@@ -1015,9 +1015,9 @@ DREF VLR subscr MSISDN:46071 usage increases to: 3
   vsub->tmsi == 0x03020100
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - MS sends TMSI Realloc Complete
-  rx from MS: pdisc=0x05 msg_type=0x5b
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(50462976){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(50462976){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
@@ -1058,10 +1058,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - subscriber detaches, using new TMSI
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+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
 DMM IMSI DETACH for MSISDN:46071
@@ -1079,10 +1079,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_gsm_authen_imei
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -1134,19 +1134,19 @@ DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000004620: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000004620) received res: 2d 8b 2c 3e 
@@ -1209,7 +1209,7 @@ DVLR sub_pres_vlr_fsm(901700000004620){SUB_PRES_VLR_S_DONE}: Deallocated
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_IMEI
 DMSC msc_tx 3 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 051802
+- DTAP --RAN_GERAN_A--> MS: GSM48_MT_MM_ID_REQ: 051802
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
@@ -1220,18 +1220,18 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS replies with an Identity Response
-  rx from MS: pdisc=0x05 msg_type=0x59
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI)=423423423423423
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=423423423423423
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
@@ -1273,10 +1273,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+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
 DMM IMSI DETACH for MSISDN:46071
@@ -1294,10 +1294,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_gsm_authen_tmsi_imei
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -1349,19 +1349,19 @@ DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000004620: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000004620) received res: 2d 8b 2c 3e 
@@ -1424,7 +1424,7 @@ DVLR sub_pres_vlr_fsm(901700000004620){SUB_PRES_VLR_S_DONE}: Deallocated
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_IMEI_TMSI
 DMSC msc_tx 3 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 051802
+- DTAP --RAN_GERAN_A--> MS: GSM48_MT_MM_ID_REQ: 051802
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
@@ -1435,18 +1435,18 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS replies with an Identity Response
-  rx from MS: pdisc=0x05 msg_type=0x59
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI)=423423423423423
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=423423423423423
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
@@ -1461,14 +1461,14 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
   lu_result_sent == 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
 DREF VLR subscr MSISDN:46071 usage increases to: 2
   vsub != NULL == 1
@@ -1477,9 +1477,9 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
   vsub->tmsi == 0xffffffff
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - MS sends TMSI Realloc Complete
-  rx from MS: pdisc=0x05 msg_type=0x5b
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
@@ -1519,10 +1519,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - subscriber detaches, using TMSI
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(TMSI)=50462976
 DREF VLR subscr MSISDN:46071 usage increases to: 2
 DMM IMSI DETACH for MSISDN:46071
@@ -1540,10 +1540,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_gsm_milenage_authen
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -1586,9 +1586,9 @@ DREF VLR subscr IMSI:901700000010650 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000010650: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000010650: MM GSM AUTHENTICATION RESPONSE (sres = 9b36efdf)
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000010650) received res: 9b 36 ef df 
@@ -1683,10 +1683,10 @@ DREF VLR subscr MSISDN:42342 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, 2nd auth vector
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000010650
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Allocated
@@ -1716,18 +1716,18 @@ DREF MSISDN:42342: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts with a CM Service Accept
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:42342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:42342: MM GSM AUTHENTICATION RESPONSE (sres = 85aa3130)
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:42342) received res: 85 aa 31 30 
@@ -1763,16 +1763,16 @@ DREF MSISDN:42342: MSC conn use - 1 == 1
 - a USSD request is serviced
   expecting USSD:
   Your extension is 42342

-  rx from MS: pdisc=0x0b msg_type=0x3b
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_NC_SS:0x3b
 DREF MSISDN:42342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=11
-DMM MSISDN:42342 pdisc=11 msg_type=0x3b: received_cm_service_request changes to false
+DRLL Dispatching 04.08 message GSM48_PDISC_NC_SS:0x3b (0xb:0x3b)
+DMM MSISDN:42342: rx msg GSM48_PDISC_NC_SS:0x3b: received_cm_service_request changes to false
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM USSD: Own number requested
 DMM MSISDN:42342: MSISDN = 42342
 DMSC msc_tx 43 bytes to MSISDN:42342 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d273104d36a3c91a0d
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_NC_SS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d273104d36a3c91a0d
 - DTAP matches expected message
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
@@ -1809,10 +1809,10 @@ DREF VLR subscr MSISDN:42342 usage increases to: 4
   llist_count(&vsub->cs.requests) == 1
 DREF VLR subscr MSISDN:42342 usage decreases to: 3
 - MS replies with Paging Response, and VLR sends Auth Request with third key
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(IMSI)=901700000010650
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Allocated
@@ -1841,18 +1841,18 @@ DREF MSISDN:42342: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts and sends pending SMS
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:42342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:42342: MM GSM AUTHENTICATION RESPONSE (sres = 69d5f9fb)
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:42342) received res: 69 d5 f9 fb 
@@ -1882,7 +1882,7 @@ DPAG Calling paging cbfn.
 DREF VLR subscr MSISDN:42342 usage increases to: 5
 DREF MSISDN:42342: MSC conn use + 1 == 3
 DMSC msc_tx 91 bytes to MSISDN:42342 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 09015801000791447758100650004c0005802443f2000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x01: 09015801000791447758100650004c0005802443f2000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:42342 usage decreases to: 4
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
@@ -1899,9 +1899,9 @@ DREF VLR subscr MSISDN:42342 usage decreases to: 4
 - conn is still open to wait for SMS ack dance
   llist_count(&net->subscr_conns) == 1
 - MS replies with CP-ACK for received SMS
-  rx from MS: pdisc=0x89 msg_type=0x04
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x04
 DREF MSISDN:42342: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
@@ -1909,12 +1909,12 @@ DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: bump: connection
 DREF MSISDN:42342: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
-  rx from MS: pdisc=0x89 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x01
 DREF MSISDN:42342: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:42342 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 0904
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x04: 0904
 - DTAP matches expected message
 DREF VLR subscr MSISDN:42342 usage decreases to: 3
 DREF VLR subscr MSISDN:42342 usage decreases to: 2
@@ -1939,10 +1939,10 @@ DREF VLR subscr MSISDN:42342 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
 DREF VLR subscr MSISDN:42342 usage increases to: 2
 DMM IMSI DETACH for MSISDN:42342
diff --git a/tests/msc_vlr/msc_vlr_test_gsm_ciph.err b/tests/msc_vlr/msc_vlr_test_gsm_ciph.err
index daa2c6505..bd8d1b9be 100644
--- a/tests/msc_vlr/msc_vlr_test_gsm_ciph.err
+++ b/tests/msc_vlr/msc_vlr_test_gsm_ciph.err
@@ -1,9 +1,9 @@
 ===== test_ciph
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -46,9 +46,9 @@ DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
   lu_result_sent == 0
   auth_request_sent == 1
 - MS sends Authen Response, VLR accepts and sends Ciphering Mode Command to MS
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000004620: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000004620) received res: 2d 8b 2c 3e 
@@ -69,17 +69,17 @@ DREF IMSI:901700000004620: MSC conn use - 1 == 1
 - needs ciph, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - MS sends Ciphering Mode Complete, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x06 msg_type=0x32
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_CIPH_M_COMPL
 DRR IMSI:901700000004620: CIPHERING MODE COMPLETE
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_CIPH}: Received Event VLR_ULA_E_CIPH_RES
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_CIPH}: vlr_loc_upd_post_ciph()
@@ -162,10 +162,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, 2nd auth vector
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
@@ -195,18 +195,18 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts and requests Ciphering
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:46071: MM GSM AUTHENTICATION RESPONSE (sres = 20bde240)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:46071) received res: 20 bd e2 40 
@@ -229,16 +229,16 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - needs ciph, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Ciphering Mode Complete, VLR accepts; above Ciphering is an implicit CM Service Accept
-  rx from MS: pdisc=0x06 msg_type=0x32
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_CIPH_M_COMPL
 DRR MSISDN:46071: CIPHERING MODE COMPLETE
 DVLR Process_Access_Request_VLR(901700000004620){PR_ARQ_S_WAIT_CIPH}: Received Event PR_ARQ_E_CIPH_RES
 DVLR Process_Access_Request_VLR(901700000004620){PR_ARQ_S_WAIT_CIPH}: _proc_arq_vlr_node2_post_ciph()
@@ -259,16 +259,16 @@ DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: bump: still awaiting f
 - a USSD request is serviced
   expecting USSD:
   Your extension is 46071

-  rx from MS: pdisc=0x0b msg_type=0x3b
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_NC_SS:0x3b
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=11
-DMM MSISDN:46071 pdisc=11 msg_type=0x3b: received_cm_service_request changes to false
+DRLL Dispatching 04.08 message GSM48_PDISC_NC_SS:0x3b (0xb:0x3b)
+DMM MSISDN:46071: rx msg GSM48_PDISC_NC_SS:0x3b: received_cm_service_request changes to false
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM USSD: Own number requested
 DMM MSISDN:46071: MSISDN = 46071
 DMSC msc_tx 43 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_NC_SS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
 - DTAP matches expected message
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
@@ -305,10 +305,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 4
   llist_count(&vsub->cs.requests) == 1
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 - MS replies with Paging Response, and VLR sends Auth Request with third key
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
@@ -337,18 +337,18 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts and requests Ciphering
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:46071: MM GSM AUTHENTICATION RESPONSE (sres = a29514ae)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:46071) received res: a2 95 14 ae 
@@ -370,16 +370,16 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - needs ciph, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Ciphering Mode Complete, VLR accepts and sends pending SMS
-  rx from MS: pdisc=0x06 msg_type=0x32
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_CIPH_M_COMPL
 DRR MSISDN:46071: CIPHERING MODE COMPLETE
 DVLR Process_Access_Request_VLR(901700000004620){PR_ARQ_S_WAIT_CIPH}: Received Event PR_ARQ_E_CIPH_RES
 DVLR Process_Access_Request_VLR(901700000004620){PR_ARQ_S_WAIT_CIPH}: _proc_arq_vlr_node2_post_ciph()
@@ -398,7 +398,7 @@ DPAG Calling paging cbfn.
 DREF VLR subscr MSISDN:46071 usage increases to: 5
 DREF MSISDN:46071: MSC conn use + 1 == 2
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x01: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 4
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
@@ -412,9 +412,9 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 4
 - conn is still open to wait for SMS ack dance
   llist_count(&net->subscr_conns) == 1
 - MS replies with CP-ACK for received SMS
-  rx from MS: pdisc=0x89 msg_type=0x04
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x04
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
@@ -422,12 +422,12 @@ DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: bump: connection
 DREF MSISDN:46071: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
-  rx from MS: pdisc=0x89 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x01
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 0904
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x04: 0904
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
@@ -452,10 +452,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+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
 DMM IMSI DETACH for MSISDN:46071
@@ -473,10 +473,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_ciph_tmsi
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -519,9 +519,9 @@ DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends Ciphering Mode Command to MS
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000004620: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000004620) received res: 2d 8b 2c 3e 
@@ -543,17 +543,17 @@ DREF IMSI:901700000004620: MSC conn use - 1 == 1
 - needs ciph, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - MS sends Ciphering Mode Complete, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x06 msg_type=0x32
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_CIPH_M_COMPL
 DRR IMSI:901700000004620: CIPHERING MODE COMPLETE
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_CIPH}: Received Event VLR_ULA_E_CIPH_RES
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_CIPH}: vlr_loc_upd_post_ciph()
@@ -612,14 +612,14 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   lu_result_sent == 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
 DREF VLR subscr MSISDN:46071 usage increases to: 2
   vsub != NULL == 1
@@ -628,9 +628,9 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
   vsub->tmsi == 0xffffffff
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - MS sends TMSI Realloc Complete
-  rx from MS: pdisc=0x05 msg_type=0x5b
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
@@ -672,10 +672,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - after a while, a new conn sends a CM Service Request using above TMSI. VLR responds with Auth Req, 2nd auth vector
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(TMSI)=50462976
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_INIT}: Allocated
@@ -705,18 +705,18 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts and requests Ciphering
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:46071: MM GSM AUTHENTICATION RESPONSE (sres = 20bde240)
 DVLR VLR_Authenticate(50462976){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:46071) received res: 20 bd e2 40 
@@ -739,16 +739,16 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - needs ciph, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Ciphering Mode Complete, VLR accepts; above Ciphering is an implicit CM Service Accept
-  rx from MS: pdisc=0x06 msg_type=0x32
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_CIPH_M_COMPL
 DRR MSISDN:46071: CIPHERING MODE COMPLETE
 DVLR Process_Access_Request_VLR(50462976){PR_ARQ_S_WAIT_CIPH}: Received Event PR_ARQ_E_CIPH_RES
 DVLR Process_Access_Request_VLR(50462976){PR_ARQ_S_WAIT_CIPH}: _proc_arq_vlr_node2_post_ciph()
@@ -769,16 +769,16 @@ DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: bump: still awaiting first re
 - a USSD request is serviced
   expecting USSD:
   Your extension is 46071

-  rx from MS: pdisc=0x0b msg_type=0x3b
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_NC_SS:0x3b
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=11
-DMM MSISDN:46071 pdisc=11 msg_type=0x3b: received_cm_service_request changes to false
+DRLL Dispatching 04.08 message GSM48_PDISC_NC_SS:0x3b (0xb:0x3b)
+DMM MSISDN:46071: rx msg GSM48_PDISC_NC_SS:0x3b: received_cm_service_request changes to false
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM USSD: Own number requested
 DMM MSISDN:46071: MSISDN = 46071
 DMSC msc_tx 43 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_NC_SS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
 - DTAP matches expected message
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
@@ -815,10 +815,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 4
   llist_count(&vsub->cs.requests) == 1
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 - MS replies with Paging Response using TMSI, and VLR sends Auth Request with third key
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(TMSI)=50462976
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_INIT}: Allocated
@@ -847,18 +847,18 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts and requests Ciphering
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:46071: MM GSM AUTHENTICATION RESPONSE (sres = a29514ae)
 DVLR VLR_Authenticate(50462976){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:46071) received res: a2 95 14 ae 
@@ -880,16 +880,16 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - needs ciph, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Ciphering Mode Complete, VLR accepts and sends pending SMS
-  rx from MS: pdisc=0x06 msg_type=0x32
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_CIPH_M_COMPL
 DRR MSISDN:46071: CIPHERING MODE COMPLETE
 DVLR Process_Access_Request_VLR(50462976){PR_ARQ_S_WAIT_CIPH}: Received Event PR_ARQ_E_CIPH_RES
 DVLR Process_Access_Request_VLR(50462976){PR_ARQ_S_WAIT_CIPH}: _proc_arq_vlr_node2_post_ciph()
@@ -908,7 +908,7 @@ DPAG Calling paging cbfn.
 DREF VLR subscr MSISDN:46071 usage increases to: 5
 DREF MSISDN:46071: MSC conn use + 1 == 2
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x01: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 4
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
@@ -922,9 +922,9 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 4
 - conn is still open to wait for SMS ack dance
   llist_count(&net->subscr_conns) == 1
 - MS replies with CP-ACK for received SMS
-  rx from MS: pdisc=0x89 msg_type=0x04
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x04
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
@@ -932,12 +932,12 @@ DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: bump: connection still h
 DREF MSISDN:46071: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
-  rx from MS: pdisc=0x89 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x01
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 0904
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x04: 0904
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
@@ -962,10 +962,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - subscriber detaches, using TMSI
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(TMSI)=50462976
 DREF VLR subscr MSISDN:46071 usage increases to: 2
 DMM IMSI DETACH for MSISDN:46071
@@ -983,10 +983,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_ciph_imei
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -1029,9 +1029,9 @@ DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends Ciphering Mode Command to MS
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000004620: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000004620) received res: 2d 8b 2c 3e 
@@ -1052,17 +1052,17 @@ DREF IMSI:901700000004620: MSC conn use - 1 == 1
 - needs ciph, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - MS sends Ciphering Mode Complete, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x06 msg_type=0x32
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_CIPH_M_COMPL
 DRR IMSI:901700000004620: CIPHERING MODE COMPLETE
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_CIPH}: Received Event VLR_ULA_E_CIPH_RES
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_CIPH}: vlr_loc_upd_post_ciph()
@@ -1113,7 +1113,7 @@ DVLR sub_pres_vlr_fsm(901700000004620){SUB_PRES_VLR_S_DONE}: Deallocated
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_IMEI
 DMSC msc_tx 3 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 051802
+- DTAP --RAN_GERAN_A--> MS: GSM48_MT_MM_ID_REQ: 051802
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
@@ -1124,18 +1124,18 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS replies with an Identity Response
-  rx from MS: pdisc=0x05 msg_type=0x59
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI)=423423423423423
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=423423423423423
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
@@ -1177,10 +1177,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+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
 DMM IMSI DETACH for MSISDN:46071
@@ -1198,10 +1198,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_ciph_imeisv
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -1244,9 +1244,9 @@ DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends Ciphering Mode Command to MS
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000004620: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000004620) received res: 2d 8b 2c 3e 
@@ -1269,20 +1269,20 @@ DREF IMSI:901700000004620: MSC conn use - 1 == 1
 - needs ciph, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 DREF VLR subscr IMSI:901700000004620 usage increases to: 2
   vsub->imeisv[0] == 0
 DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
 - MS sends Ciphering Mode Complete with IMEISV, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x06 msg_type=0x32
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_CIPH_M_COMPL
 DRR IMSI:901700000004620: CIPHERING MODE COMPLETE
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_CIPH}: Received Event VLR_ULA_E_CIPH_RES
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_CIPH}: got IMEISV: 4234234234234235F
@@ -1303,18 +1303,18 @@ DREF VLR subscr IMSI:901700000004620 usage increases to: 2
 DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS replies with an Identity Response
-  rx from MS: pdisc=0x05 msg_type=0x59
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI)=423423423423423
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=423423423423423
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_HLR_UPD}: Received Event VLR_ULA_E_ID_IMEI
@@ -1391,10 +1391,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+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
 DMM IMSI DETACH for MSISDN:46071
@@ -1412,10 +1412,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_ciph_tmsi_imei
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -1458,9 +1458,9 @@ DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends Ciphering Mode Command to MS
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000004620: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000004620) received res: 2d 8b 2c 3e 
@@ -1481,17 +1481,17 @@ DREF IMSI:901700000004620: MSC conn use - 1 == 1
 - needs ciph, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr IMSI:901700000004620: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - MS sends Ciphering Mode Complete, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x06 msg_type=0x32
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_CIPH_M_COMPL
 DRR IMSI:901700000004620: CIPHERING MODE COMPLETE
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_CIPH}: Received Event VLR_ULA_E_CIPH_RES
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_CIPH}: vlr_loc_upd_post_ciph()
@@ -1542,7 +1542,7 @@ DVLR sub_pres_vlr_fsm(901700000004620){SUB_PRES_VLR_S_DONE}: Deallocated
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_IMEI_TMSI
 DMSC msc_tx 3 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 051802
+- DTAP --RAN_GERAN_A--> MS: GSM48_MT_MM_ID_REQ: 051802
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
@@ -1553,18 +1553,18 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS replies with an Identity Response
-  rx from MS: pdisc=0x05 msg_type=0x59
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI)=423423423423423
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=423423423423423
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
@@ -1579,14 +1579,14 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
   lu_result_sent == 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
 DREF VLR subscr MSISDN:46071 usage increases to: 2
   vsub != NULL == 1
@@ -1595,9 +1595,9 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
   vsub->tmsi == 0xffffffff
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - MS sends TMSI Realloc Complete
-  rx from MS: pdisc=0x05 msg_type=0x5b
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
@@ -1637,10 +1637,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - subscriber detaches, using TMSI
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(TMSI)=50462976
 DREF VLR subscr MSISDN:46071 usage increases to: 2
 DMM IMSI DETACH for MSISDN:46071
diff --git a/tests/msc_vlr/msc_vlr_test_hlr_reject.err b/tests/msc_vlr/msc_vlr_test_hlr_reject.err
index 4c566d15a..9650df9de 100644
--- a/tests/msc_vlr/msc_vlr_test_hlr_reject.err
+++ b/tests/msc_vlr/msc_vlr_test_hlr_reject.err
@@ -1,9 +1,9 @@
 ===== test_hlr_rej_auth_info_unknown_imsi
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -74,10 +74,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_hlr_rej_auth_info_net_fail
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -150,10 +150,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 ---
 - Submit a used auth tuple in the VLR
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -196,9 +196,9 @@ DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000004620: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000004620) received res: 2d 8b 2c 3e 
@@ -299,10 +299,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - Another LU wants to get new tuples; even though HLR sends Network Failure, we are reusing the old tuples.
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -343,9 +343,9 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 2
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:46071: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:46071) received res: 2d 8b 2c 3e 
@@ -447,10 +447,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 ---
 - Submit a used auth tuple in the VLR
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -493,9 +493,9 @@ DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000004620: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000004620) received res: 2d 8b 2c 3e 
@@ -596,10 +596,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - Another LU wants to get new tuples; HLR sends Network Failure, we reject.
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -670,10 +670,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 ---
 - Submit a used auth tuple in the VLR
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -716,9 +716,9 @@ DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000004620: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000004620) received res: 2d 8b 2c 3e 
@@ -820,10 +820,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - Another LU wants to get new tuples; HLR sends IMSI Unknown. Even though we would re-use an old tuple, reject the unknown IMSI.
   net->vlr->cfg.auth_reuse_old_sets_on_error == 1
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -892,10 +892,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_hlr_acc_but_no_auth_tuples
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -965,10 +965,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_hlr_rej_lu
 - Location Update request causes a GSUP LU request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -1041,10 +1041,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_hlr_no_insert_data
 - Location Update request causes a GSUP LU request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
diff --git a/tests/msc_vlr/msc_vlr_test_hlr_timeout.err b/tests/msc_vlr/msc_vlr_test_hlr_timeout.err
index 7c04f46e1..f83cc2976 100644
--- a/tests/msc_vlr/msc_vlr_test_hlr_timeout.err
+++ b/tests/msc_vlr/msc_vlr_test_hlr_timeout.err
@@ -1,10 +1,10 @@
 ===== test_hlr_timeout_lu_auth_info
 - Total time passed: 0.000000 s
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -83,10 +83,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 ===== test_hlr_timeout_lu_upd_loc_result
 - Total time passed: 0.000000 s
 - Location Update request causes a GSUP LU request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
diff --git a/tests/msc_vlr/msc_vlr_test_ms_timeout.err b/tests/msc_vlr/msc_vlr_test_ms_timeout.err
index 046548c1e..1574ef9ee 100644
--- a/tests/msc_vlr/msc_vlr_test_ms_timeout.err
+++ b/tests/msc_vlr/msc_vlr_test_ms_timeout.err
@@ -1,10 +1,10 @@
 ===== test_ms_timeout_lu_auth_resp
 - Total time passed: 0.000000 s
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -103,10 +103,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 ===== test_ms_timeout_cm_auth_resp
 - Total time passed: 0.000000 s
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -149,9 +149,9 @@ DREF VLR subscr IMSI:901700000004620 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000004620: MM GSM AUTHENTICATION RESPONSE (sres = 2d8b2c3e)
 DVLR VLR_Authenticate(901700000004620){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000004620) received res: 2d 8b 2c 3e 
@@ -246,10 +246,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, 2nd auth vector
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
diff --git a/tests/msc_vlr/msc_vlr_test_no_authen.err b/tests/msc_vlr/msc_vlr_test_no_authen.err
index 99454fc87..015e55b9d 100644
--- a/tests/msc_vlr/msc_vlr_test_no_authen.err
+++ b/tests/msc_vlr/msc_vlr_test_no_authen.err
@@ -1,9 +1,9 @@
 ===== test_no_authen
 - Location Update request causes a GSUP LU request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -46,14 +46,14 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - having received subscriber data does not mean acceptance
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000004026f0
@@ -115,10 +115,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - after a while, a new conn sends a CM Service Request
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
@@ -156,16 +156,16 @@ msc_subscr_conn_is_accepted() == true
 - a USSD request is serviced
   expecting USSD:
   Your extension is 46071

-  rx from MS: pdisc=0x0b msg_type=0x3b
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_NC_SS:0x3b
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=11
-DMM MSISDN:46071 pdisc=11 msg_type=0x3b: received_cm_service_request changes to false
+DRLL Dispatching 04.08 message GSM48_PDISC_NC_SS:0x3b (0xb:0x3b)
+DMM MSISDN:46071: rx msg GSM48_PDISC_NC_SS:0x3b: received_cm_service_request changes to false
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM USSD: Own number requested
 DMM MSISDN:46071: MSISDN = 46071
 DMSC msc_tx 43 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_NC_SS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
 - DTAP matches expected message
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
@@ -203,10 +203,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 4
   llist_count(&vsub->cs.requests) == 1
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 - MS replies with Paging Response, we deliver the SMS
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
@@ -236,7 +236,7 @@ DPAG Calling paging cbfn.
 DREF VLR subscr MSISDN:46071 usage increases to: 6
 DREF MSISDN:46071: MSC conn use + 1 == 3
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x01: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 5
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
@@ -254,9 +254,9 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 4
 - conn is still open to wait for SMS ack dance
   llist_count(&net->subscr_conns) == 1
 - MS replies with CP-ACK for received SMS
-  rx from MS: pdisc=0x89 msg_type=0x04
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x04
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
@@ -264,12 +264,12 @@ DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: bump: connection
 DREF MSISDN:46071: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
-  rx from MS: pdisc=0x89 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x01
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 0904
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x04: 0904
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
@@ -294,10 +294,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+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
 DMM IMSI DETACH for MSISDN:46071
@@ -315,10 +315,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_no_authen_tmsi
 - Location Update request causes a GSUP LU request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -361,14 +361,14 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - having received subscriber data does not mean acceptance
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000004026f0
@@ -406,14 +406,14 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   lu_result_sent == 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
 DREF VLR subscr MSISDN:46071 usage increases to: 2
   vsub != NULL == 1
@@ -422,9 +422,9 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
   vsub->tmsi == 0xffffffff
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - MS sends TMSI Realloc Complete
-  rx from MS: pdisc=0x05 msg_type=0x5b
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
@@ -466,10 +466,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - after a while, a new conn sends a CM Service Request using above TMSI
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(TMSI)=50462976
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_INIT}: Allocated
@@ -507,16 +507,16 @@ msc_subscr_conn_is_accepted() == true
 - a USSD request is serviced
   expecting USSD:
   Your extension is 46071

-  rx from MS: pdisc=0x0b msg_type=0x3b
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_NC_SS:0x3b
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=11
-DMM MSISDN:46071 pdisc=11 msg_type=0x3b: received_cm_service_request changes to false
+DRLL Dispatching 04.08 message GSM48_PDISC_NC_SS:0x3b (0xb:0x3b)
+DMM MSISDN:46071: rx msg GSM48_PDISC_NC_SS:0x3b: received_cm_service_request changes to false
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM USSD: Own number requested
 DMM MSISDN:46071: MSISDN = 46071
 DMSC msc_tx 43 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_NC_SS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
 - DTAP matches expected message
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
@@ -553,10 +553,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 4
   llist_count(&vsub->cs.requests) == 1
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 - MS replies with Paging Response using TMSI, we deliver the SMS
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(TMSI)=50462976
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_INIT}: Allocated
@@ -586,7 +586,7 @@ DPAG Calling paging cbfn.
 DREF VLR subscr MSISDN:46071 usage increases to: 6
 DREF MSISDN:46071: MSC conn use + 1 == 3
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x01: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 5
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
@@ -604,9 +604,9 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 4
 - conn is still open to wait for SMS ack dance
   llist_count(&net->subscr_conns) == 1
 - MS replies with CP-ACK for received SMS
-  rx from MS: pdisc=0x89 msg_type=0x04
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x04
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
@@ -614,12 +614,12 @@ DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: bump: connection still h
 DREF MSISDN:46071: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
-  rx from MS: pdisc=0x89 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x01
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 0904
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x04: 0904
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
@@ -645,10 +645,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - subscriber sends LU Request, this time with the TMSI
 - Location Update request causes a GSUP LU request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(50462976){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -689,14 +689,14 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - having received subscriber data does not mean acceptance
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000004026f0
@@ -734,14 +734,14 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 2
   lu_result_sent == 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
 DREF VLR subscr MSISDN:46071 usage increases to: 3
   vsub != NULL == 1
@@ -750,9 +750,9 @@ DREF VLR subscr MSISDN:46071 usage increases to: 3
   vsub->tmsi == 0x03020100
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - MS sends TMSI Realloc Complete
-  rx from MS: pdisc=0x05 msg_type=0x5b
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(50462976){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(50462976){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
@@ -793,10 +793,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - subscriber detaches, using new TMSI
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+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
 DMM IMSI DETACH for MSISDN:46071
@@ -814,10 +814,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_no_authen_imei
 - Location Update request causes a GSUP LU request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -860,14 +860,14 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - having received subscriber data does not mean acceptance
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT, and we send an ID Request for the IMEI to the MS
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000004026f0
@@ -897,7 +897,7 @@ DVLR sub_pres_vlr_fsm(901700000004620){SUB_PRES_VLR_S_DONE}: Deallocated
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_IMEI
 DMSC msc_tx 3 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 051802
+- DTAP --RAN_GERAN_A--> MS: GSM48_MT_MM_ID_REQ: 051802
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
@@ -908,18 +908,18 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS replies with an Identity Response
-  rx from MS: pdisc=0x05 msg_type=0x59
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI)=423423423423423
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=423423423423423
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
@@ -961,10 +961,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+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
 DMM IMSI DETACH for MSISDN:46071
@@ -982,10 +982,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_no_authen_tmsi_imei
 - Location Update request causes a GSUP LU request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -1028,14 +1028,14 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - having received subscriber data does not mean acceptance
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT, and we send an ID Request for the IMEI to the MS
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000004026f0
@@ -1065,7 +1065,7 @@ DVLR sub_pres_vlr_fsm(901700000004620){SUB_PRES_VLR_S_DONE}: Deallocated
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_IMEI_TMSI
 DMSC msc_tx 3 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 051802
+- DTAP --RAN_GERAN_A--> MS: GSM48_MT_MM_ID_REQ: 051802
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
@@ -1076,18 +1076,18 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS replies with an Identity Response
-  rx from MS: pdisc=0x05 msg_type=0x59
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMEI)=423423423423423
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=423423423423423
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
@@ -1102,18 +1102,18 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
   lu_result_sent == 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends TMSI Realloc Complete
-  rx from MS: pdisc=0x05 msg_type=0x5b
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:46071
 DVLR vlr_lu_fsm(901700000004620){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(901700000004620){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
@@ -1154,10 +1154,10 @@ DREF VLR subscr MSISDN:46071 usage increases to: 2
 DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+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
 DMM IMSI DETACH for MSISDN:46071
diff --git a/tests/msc_vlr/msc_vlr_test_reject_concurrency.err b/tests/msc_vlr/msc_vlr_test_reject_concurrency.err
index 267b1316f..7b0954fdc 100644
--- a/tests/msc_vlr/msc_vlr_test_reject_concurrency.err
+++ b/tests/msc_vlr/msc_vlr_test_reject_concurrency.err
@@ -1,9 +1,9 @@
 ===== test_reject_2nd_conn
 - Location Update Request on one connection
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -35,10 +35,10 @@ DREF IMSI:901700000004620: MSC conn use - 1 == 1
   lu_result_sent == 0
   llist_count(&net->subscr_conns) == 1
 - Another Location Update Request from the same subscriber on another connection is rejected
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -151,10 +151,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_reject_lu_during_lu
 - Location Update Request
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -187,9 +187,9 @@ DREF IMSI:901700000004620: MSC conn use - 1 == 1
   llist_count(&net->subscr_conns) == 1
 ---
 - Another Location Update Request from the same subscriber on the same conn is dropped silently
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DMM 901700000004620: Error: connection already in use
 DMM IMSI:901700000004620: bump: conn still being established (SUBSCR_CONN_S_NEW)
 DREF IMSI:901700000004620: MSC conn use - 1 == 1
@@ -273,10 +273,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_reject_cm_during_lu
 - Location Update Request
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -309,14 +309,14 @@ DREF IMSI:901700000004620: MSC conn use - 1 == 1
   llist_count(&net->subscr_conns) == 1
 ---
 - A CM Service Request in the middle of a LU is rejected
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000004620
 DMM IMSI:901700000004620: connection already in use
 DMM -> CM SERVICE Reject cause: 17
 DMSC msc_tx 3 bytes to IMSI:901700000004620 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 052211
+- DTAP --RAN_GERAN_A--> MS: GSM48_MT_MM_CM_SERV_REJ: 052211
 - DTAP matches expected message
 DMM IMSI:901700000004620: bump: conn still being established (SUBSCR_CONN_S_NEW)
 DREF IMSI:901700000004620: MSC conn use - 1 == 1
@@ -401,10 +401,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_reject_paging_resp_during_lu
 - Location Update Request
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -437,9 +437,9 @@ DREF IMSI:901700000004620: MSC conn use - 1 == 1
   llist_count(&net->subscr_conns) == 1
 ---
 - An erratic Paging Response is dropped silently
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
 DREF IMSI:901700000004620: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(IMSI)=901700000004620
 DMM 901700000004620: Error: connection already in use
 DMM IMSI:901700000004620: bump: conn still being established (SUBSCR_CONN_S_NEW)
@@ -526,10 +526,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 ---
 - Subscriber does a normal LU
 - Location Update Request
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -630,10 +630,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - Subscriber does a normal CM Service Request
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
@@ -669,9 +669,9 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
   cm_service_result_sent == 1
 msc_subscr_conn_is_accepted() == true
 - A LU request on an open conn is dropped silently
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DMM 901700000004620: Error: connection already in use
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: bump: still awaiting first request after a CM Service Request
@@ -680,9 +680,9 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
   llist_count(&net->subscr_conns) == 1
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+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: 3
 DMM IMSI DETACH for MSISDN:46071
@@ -714,10 +714,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 ---
 - Subscriber does a normal LU
 - Location Update Request
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -818,10 +818,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - Subscriber does a normal CM Service Request
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
@@ -857,9 +857,9 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
   cm_service_result_sent == 1
 msc_subscr_conn_is_accepted() == true
 - A second CM Service Request on the same conn is accepted without another auth dance
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000004620
 DMM MSISDN:46071: re-using already accepted connection
 - sending CM Service Accept for MSISDN:46071
@@ -870,9 +870,9 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
   llist_count(&net->subscr_conns) == 1
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+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: 3
 DMM IMSI DETACH for MSISDN:46071
@@ -904,10 +904,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 ---
 - Subscriber does a normal LU
 - Location Update Request
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -1008,10 +1008,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - Subscriber does a normal CM Service Request
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
@@ -1048,9 +1048,9 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 msc_subscr_conn_is_accepted() == true
 ---
 - An erratic Paging Response on the same conn is dropped silently
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(IMSI)=901700000004620
 DMM 901700000004620: Error: connection already in use
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
@@ -1062,16 +1062,16 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
 - a USSD request is serviced
   expecting USSD:
   Your extension is 46071

-  rx from MS: pdisc=0x0b msg_type=0x3b
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_NC_SS:0x3b
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=11
-DMM MSISDN:46071 pdisc=11 msg_type=0x3b: received_cm_service_request changes to false
+DRLL Dispatching 04.08 message GSM48_PDISC_NC_SS:0x3b (0xb:0x3b)
+DMM MSISDN:46071: rx msg GSM48_PDISC_NC_SS:0x3b: received_cm_service_request changes to false
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM USSD: Own number requested
 DMM MSISDN:46071: MSISDN = 46071
 DMSC msc_tx 43 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_NC_SS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
 - DTAP matches expected message
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
@@ -1100,10 +1100,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 ---
 - Subscriber does a normal LU
 - Location Update Request
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -1216,10 +1216,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 3
   paging_sent == 1
   paging_stopped == 0
 - MS replies with Paging Response, we deliver the SMS
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
@@ -1249,7 +1249,7 @@ DPAG Calling paging cbfn.
 DREF VLR subscr MSISDN:46071 usage increases to: 6
 DREF MSISDN:46071: MSC conn use + 1 == 3
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x01: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 5
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
@@ -1264,9 +1264,9 @@ DREF MSISDN:46071: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 ---
 - MS sends erratic LU Request, which is dropped silently
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DMM 901700000004620: Error: connection already in use
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: bump: connection still has active transaction: GSM48_PDISC_SMS
@@ -1274,9 +1274,9 @@ DREF MSISDN:46071: MSC conn use - 1 == 2
   lu_result_sent == 0
   llist_count(&net->subscr_conns) == 1
 - MS replies with CP-ACK for received SMS
-  rx from MS: pdisc=0x89 msg_type=0x04
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x04
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
@@ -1284,12 +1284,12 @@ DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: bump: connection
 DREF MSISDN:46071: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
-  rx from MS: pdisc=0x89 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x01
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 0904
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x04: 0904
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
@@ -1322,10 +1322,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 ---
 - Subscriber does a normal LU
 - Location Update Request
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -1438,10 +1438,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 3
   paging_sent == 1
   paging_stopped == 0
 - MS replies with Paging Response, we deliver the SMS
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
@@ -1471,7 +1471,7 @@ DPAG Calling paging cbfn.
 DREF VLR subscr MSISDN:46071 usage increases to: 6
 DREF MSISDN:46071: MSC conn use + 1 == 3
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x01: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 5
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
@@ -1486,9 +1486,9 @@ DREF MSISDN:46071: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 ---
 - CM Service Request during open connection is accepted
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000004620
 DMM MSISDN:46071: re-using already accepted connection
 - sending CM Service Accept for MSISDN:46071
@@ -1499,9 +1499,9 @@ DREF MSISDN:46071: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
   g_conn->received_cm_service_request == 1
 - MS replies with CP-ACK for received SMS
-  rx from MS: pdisc=0x89 msg_type=0x04
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x04
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
@@ -1509,12 +1509,12 @@ DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: bump: still await
 DREF MSISDN:46071: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
-  rx from MS: pdisc=0x89 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x01
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 0904
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x04: 0904
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
@@ -1527,9 +1527,9 @@ DREF MSISDN:46071: MSC conn use - 1 == 1
   llist_count(&net->subscr_conns) == 1
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
 DREF MSISDN:46071: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+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: 3
 DMM IMSI DETACH for MSISDN:46071
@@ -1561,10 +1561,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 ---
 - Subscriber does a normal LU
 - Location Update Request
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -1677,10 +1677,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 3
   paging_sent == 1
   paging_stopped == 0
 - MS replies with Paging Response, we deliver the SMS
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
@@ -1710,7 +1710,7 @@ DPAG Calling paging cbfn.
 DREF VLR subscr MSISDN:46071 usage increases to: 6
 DREF MSISDN:46071: MSC conn use + 1 == 3
 DMSC msc_tx 91 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x01: 09015801000791447758100650004c0005806470f1000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 5
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
@@ -1725,18 +1725,18 @@ DREF MSISDN:46071: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 ---
 - MS sends another erratic Paging Response which is dropped silently
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(IMSI)=901700000004620
 DMM 901700000004620: Error: connection already in use
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: bump: connection still has active transaction: GSM48_PDISC_SMS
 DREF MSISDN:46071: MSC conn use - 1 == 2
 - MS replies with CP-ACK for received SMS
-  rx from MS: pdisc=0x89 msg_type=0x04
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x04
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
@@ -1744,12 +1744,12 @@ DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: bump: connection
 DREF MSISDN:46071: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
-  rx from MS: pdisc=0x89 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x01
 DREF MSISDN:46071: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:46071 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 0904
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x04: 0904
 - DTAP matches expected message
 DREF VLR subscr MSISDN:46071 usage decreases to: 3
 DREF VLR subscr MSISDN:46071 usage decreases to: 2
diff --git a/tests/msc_vlr/msc_vlr_test_rest.err b/tests/msc_vlr/msc_vlr_test_rest.err
index 6066eac2c..6122040c9 100644
--- a/tests/msc_vlr/msc_vlr_test_rest.err
+++ b/tests/msc_vlr/msc_vlr_test_rest.err
@@ -10,14 +10,14 @@ DMM Subscr_Conn(test){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
 DMM Subscr_Conn(test){SUBSCR_CONN_S_INIT}: state_chg to SUBSCR_CONN_S_NEW
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr unknown: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr unknown: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr unknown: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr unknown: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr unknown: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr unknown: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr unknown: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr unknown: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - fake: acceptance
 DREF VLR subscr unknown usage increases to: 1
 DMM Subscr_Conn(test){SUBSCR_CONN_S_NEW}: state_chg to SUBSCR_CONN_S_ACCEPTED
@@ -43,10 +43,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_cm_service_without_lu
 - CM Service Request without a prior Location Updating
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000004620
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
@@ -84,10 +84,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_two_lu
 - Location Update request causes a GSUP LU request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -130,14 +130,14 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - having received subscriber data does not mean acceptance
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000004026f0
@@ -200,10 +200,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
 ---
 - verify that the MS can send another LU request
 - Location Update request causes a GSUP LU request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000004620){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -244,14 +244,14 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 2
 - having received subscriber data does not mean acceptance
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000004026f0
@@ -312,10 +312,10 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+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
 DMM IMSI DETACH for MSISDN:46071
@@ -333,10 +333,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_lu_unknown_tmsi
 - Location Update request with unknown TMSI sends ID Request for IMSI
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(591536962){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(591536962){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -354,25 +354,25 @@ DREF VLR subscr TMSI:0x23422342 usage decreases to: 1
 DVLR vlr_lu_fsm(591536962){VLR_ULA_S_IDLE}: vlr_loc_upd_want_imsi()
 DVLR vlr_lu_fsm(591536962){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_IMSI
 DMSC msc_tx 3 bytes to TMSI:0x23422342 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 051801
+- DTAP --RAN_GERAN_A--> MS: GSM48_MT_MM_ID_REQ: 051801
 - DTAP matches expected message
 DMM TMSI:0x23422342: bump: conn still being established (SUBSCR_CONN_S_NEW)
 DREF TMSI:0x23422342: MSC conn use - 1 == 1
   lu_result_sent == 0
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr TMSI:0x23422342: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr TMSI:0x23422342: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr TMSI:0x23422342: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr TMSI:0x23422342: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr TMSI:0x23422342: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr TMSI:0x23422342: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr TMSI:0x23422342: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr TMSI:0x23422342: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS tells us the IMSI, causes a GSUP LU request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x59
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_ID_RESP
 DREF TMSI:0x23422342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_ID_RESP (0x5:0x19)
 DMM IDENTITY RESPONSE: MI(IMSI)=901700000004620
 DVLR set IMSI on subscriber; IMSI=901700000004620 id=901700000004620
 DVLR vlr_lu_fsm(591536962){VLR_ULA_S_WAIT_IMSI}: Received Event VLR_ULA_E_ID_IMSI
@@ -404,14 +404,14 @@ DREF VLR subscr MSISDN:46071 usage decreases to: 1
 - having received subscriber data does not mean acceptance
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:46071: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:46071: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000004026f0
diff --git a/tests/msc_vlr/msc_vlr_test_umts_authen.err b/tests/msc_vlr/msc_vlr_test_umts_authen.err
index bcb6e31f0..f59612cef 100644
--- a/tests/msc_vlr/msc_vlr_test_umts_authen.err
+++ b/tests/msc_vlr/msc_vlr_test_umts_authen.err
@@ -1,9 +1,9 @@
 ===== test_umts_authen_geran
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -47,9 +47,9 @@ DREF VLR subscr IMSI:901700000010650 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000010650: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000010650: MM R99 AUTHENTICATION RESPONSE (res = e229c19e791f2e41)
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000010650) received res: e2 29 c1 9e 79 1f 2e 41 
@@ -121,14 +121,14 @@ DREF VLR subscr MSISDN:42342 usage decreases to: 1
   llist_count(&net->subscr_conns) == 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
 DREF VLR subscr MSISDN:42342 usage increases to: 2
   vsub != NULL == 1
@@ -137,9 +137,9 @@ DREF VLR subscr MSISDN:42342 usage increases to: 2
   vsub->tmsi == 0xffffffff
 DREF VLR subscr MSISDN:42342 usage decreases to: 1
 - MS sends TMSI Realloc Complete
-  rx from MS: pdisc=0x05 msg_type=0x5b
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF MSISDN:42342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:42342
 DVLR vlr_lu_fsm(901700000010650){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(901700000010650){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
@@ -174,10 +174,10 @@ DREF VLR subscr MSISDN:42342 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, 2nd auth vector
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000010650
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Allocated
@@ -208,18 +208,18 @@ DREF MSISDN:42342: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts with a CM Service Accept
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:42342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:42342: MM R99 AUTHENTICATION RESPONSE (res = 7db47cf7f81e4dc7)
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:42342) received res: 7d b4 7c f7 f8 1e 4d c7 
@@ -255,16 +255,16 @@ DREF MSISDN:42342: MSC conn use - 1 == 1
 - a USSD request is serviced
   expecting USSD:
   Your extension is 42342

-  rx from MS: pdisc=0x0b msg_type=0x3b
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_NC_SS:0x3b
 DREF MSISDN:42342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=11
-DMM MSISDN:42342 pdisc=11 msg_type=0x3b: received_cm_service_request changes to false
+DRLL Dispatching 04.08 message GSM48_PDISC_NC_SS:0x3b (0xb:0x3b)
+DMM MSISDN:42342: rx msg GSM48_PDISC_NC_SS:0x3b: received_cm_service_request changes to false
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM USSD: Own number requested
 DMM MSISDN:42342: MSISDN = 42342
 DMSC msc_tx 43 bytes to MSISDN:42342 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d273104d36a3c91a0d
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_NC_SS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d273104d36a3c91a0d
 - DTAP matches expected message
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
@@ -301,10 +301,10 @@ DREF VLR subscr MSISDN:42342 usage increases to: 4
   llist_count(&vsub->cs.requests) == 1
 DREF VLR subscr MSISDN:42342 usage decreases to: 3
 - MS replies with Paging Response, and VLR sends Auth Request with third key
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(IMSI)=901700000010650
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Allocated
@@ -334,18 +334,18 @@ DREF MSISDN:42342: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts and sends pending SMS
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:42342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:42342: MM R99 AUTHENTICATION RESPONSE (res = 706f996719ba609c)
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:42342) received res: 70 6f 99 67 19 ba 60 9c 
@@ -375,7 +375,7 @@ DPAG Calling paging cbfn.
 DREF VLR subscr MSISDN:42342 usage increases to: 5
 DREF MSISDN:42342: MSC conn use + 1 == 3
 DMSC msc_tx 91 bytes to MSISDN:42342 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 09015801000791447758100650004c0005802443f2000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x01: 09015801000791447758100650004c0005802443f2000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:42342 usage decreases to: 4
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
@@ -392,9 +392,9 @@ DREF VLR subscr MSISDN:42342 usage decreases to: 4
 - conn is still open to wait for SMS ack dance
   llist_count(&net->subscr_conns) == 1
 - MS replies with CP-ACK for received SMS
-  rx from MS: pdisc=0x89 msg_type=0x04
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x04
 DREF MSISDN:42342: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
@@ -402,12 +402,12 @@ DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: bump: connection
 DREF MSISDN:42342: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
-  rx from MS: pdisc=0x89 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_PDISC_SMS:0x01
 DREF MSISDN:42342: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:42342 via RAN_GERAN_A
-- DTAP --RAN_GERAN_A--> MS: 0904
+- DTAP --RAN_GERAN_A--> MS: GSM48_PDISC_SMS:0x04: 0904
 - DTAP matches expected message
 DREF VLR subscr MSISDN:42342 usage decreases to: 3
 DREF VLR subscr MSISDN:42342 usage decreases to: 2
@@ -432,10 +432,10 @@ DREF VLR subscr MSISDN:42342 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
 DREF VLR subscr MSISDN:42342 usage increases to: 2
 DMM IMSI DETACH for MSISDN:42342
@@ -453,10 +453,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_umts_authen_utran
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -500,9 +500,9 @@ DREF VLR subscr IMSI:901700000010650 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends SecurityModeControl
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000010650: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000010650: MM R99 AUTHENTICATION RESPONSE (res = e229c19e791f2e41)
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000010650) received res: e2 29 c1 9e 79 1f 2e 41 
@@ -583,14 +583,14 @@ DREF VLR subscr MSISDN:42342 usage decreases to: 1
   llist_count(&net->subscr_conns) == 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
 DREF VLR subscr MSISDN:42342 usage increases to: 2
   vsub != NULL == 1
@@ -599,9 +599,9 @@ DREF VLR subscr MSISDN:42342 usage increases to: 2
   vsub->tmsi == 0xffffffff
 DREF VLR subscr MSISDN:42342 usage decreases to: 1
 - MS sends TMSI Realloc Complete
-  rx from MS: pdisc=0x05 msg_type=0x5b
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF MSISDN:42342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:42342
 DVLR vlr_lu_fsm(901700000010650){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(901700000010650){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
@@ -637,10 +637,10 @@ DREF VLR subscr MSISDN:42342 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, 2nd auth vector
-  rx from MS: pdisc=0x05 msg_type=0x24
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_MT_MM_CM_SERV_REQ
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_CM_SERV_REQ (0x5:0x24)
 DMM <- CM SERVICE REQUEST serv_type=0x08 MI(IMSI)=901700000010650
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Allocated
@@ -671,18 +671,18 @@ DREF MSISDN:42342: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts and sends SecurityModeControl
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:42342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:42342: MM R99 AUTHENTICATION RESPONSE (res = 7db47cf7f81e4dc7)
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:42342) received res: 7d b4 7c f7 f8 1e 4d c7 
@@ -725,16 +725,16 @@ DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: bump: still awaiting f
 - a USSD request is serviced
   expecting USSD:
   Your extension is 42342

-  rx from MS: pdisc=0x0b msg_type=0x3b
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_PDISC_NC_SS:0x3b
 DREF MSISDN:42342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=11
-DMM MSISDN:42342 pdisc=11 msg_type=0x3b: received_cm_service_request changes to false
+DRLL Dispatching 04.08 message GSM48_PDISC_NC_SS:0x3b (0xb:0x3b)
+DMM MSISDN:42342: rx msg GSM48_PDISC_NC_SS:0x3b: received_cm_service_request changes to false
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM USSD: Own number requested
 DMM MSISDN:42342: MSISDN = 42342
 DMSC msc_tx 43 bytes to MSISDN:42342 via RAN_UTRAN_IU
-- DTAP --RAN_UTRAN_IU--> MS: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d273104d36a3c91a0d
+- DTAP --RAN_UTRAN_IU--> MS: GSM48_PDISC_NC_SS:0x2a: 8b2a1c27a225020100302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d273104d36a3c91a0d
 - DTAP matches expected message
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: bump: releasing conn
@@ -772,10 +772,10 @@ DREF VLR subscr MSISDN:42342 usage increases to: 4
   llist_count(&vsub->cs.requests) == 1
 DREF VLR subscr MSISDN:42342 usage decreases to: 3
 - MS replies with Paging Response, and VLR sends Auth Request with third key
-  rx from MS: pdisc=0x06 msg_type=0x27
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_MT_RR_PAG_RESP
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=6
+DRLL Dispatching 04.08 message GSM48_MT_RR_PAG_RESP (0x6:0x27)
 DRR PAGING RESPONSE: MI(IMSI)=901700000010650
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Allocated
@@ -805,18 +805,18 @@ DREF MSISDN:42342: MSC conn use - 1 == 1
 - needs auth, not yet accepted
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - MS sends Authen Response, VLR accepts and sends SecurityModeControl
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_MT_MM_AUTH_RESP
 DREF MSISDN:42342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM MSISDN:42342: MM R99 AUTHENTICATION RESPONSE (res = 706f996719ba609c)
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(MSISDN:42342) received res: 70 6f 99 67 19 ba 60 9c 
@@ -857,7 +857,7 @@ DPAG Calling paging cbfn.
 DREF VLR subscr MSISDN:42342 usage increases to: 5
 DREF MSISDN:42342: MSC conn use + 1 == 2
 DMSC msc_tx 91 bytes to MSISDN:42342 via RAN_UTRAN_IU
-- DTAP --RAN_UTRAN_IU--> MS: 09015801000791447758100650004c0005802443f2000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
+- DTAP --RAN_UTRAN_IU--> MS: GSM48_PDISC_SMS:0x01: 09015801000791447758100650004c0005802443f2000007101000000000445079da1e1ee7416937485e9ea7c965373d1d6683c270383b3d0ed3d36ff71c949e83c22072799e9687c5ec32a81d96afcbf4b4fb0c7ac3e9e9b7db05
 - DTAP matches expected message
 DREF VLR subscr MSISDN:42342 usage decreases to: 4
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_BUMP
@@ -870,9 +870,9 @@ DREF VLR subscr MSISDN:42342 usage decreases to: 4
 - conn is still open to wait for SMS ack dance
   llist_count(&net->subscr_conns) == 1
 - MS replies with CP-ACK for received SMS
-  rx from MS: pdisc=0x89 msg_type=0x04
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_PDISC_SMS:0x04
 DREF MSISDN:42342: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x04 (0x9:0x4)
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_ACCEPTED}: state_chg to SUBSCR_CONN_S_COMMUNICATING
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_BUMP
@@ -880,12 +880,12 @@ DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: bump: connection
 DREF MSISDN:42342: MSC conn use - 1 == 2
   llist_count(&net->subscr_conns) == 1
 - MS also sends RP-ACK, MSC in turn sends CP-ACK for that
-  rx from MS: pdisc=0x89 msg_type=0x01
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_PDISC_SMS:0x01
 DREF MSISDN:42342: MSC conn use + 1 == 3
-DRLL Dispatching 04.08 message, pdisc=9
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_COMMUNICATING}: Received Event SUBSCR_CONN_E_COMMUNICATING
 DMSC msc_tx 2 bytes to MSISDN:42342 via RAN_UTRAN_IU
-- DTAP --RAN_UTRAN_IU--> MS: 0904
+- DTAP --RAN_UTRAN_IU--> MS: GSM48_PDISC_SMS:0x04: 0904
 - DTAP matches expected message
 DREF VLR subscr MSISDN:42342 usage decreases to: 3
 DREF VLR subscr MSISDN:42342 usage decreases to: 2
@@ -911,10 +911,10 @@ DREF VLR subscr MSISDN:42342 usage decreases to: 1
   llist_count(&net->subscr_conns) == 0
 ---
 - subscriber detaches
-  rx from MS: pdisc=0x05 msg_type=0x01
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_MT_MM_IMSI_DETACH_IND
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
 DREF VLR subscr MSISDN:42342 usage increases to: 2
 DMM IMSI DETACH for MSISDN:42342
@@ -933,10 +933,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_umts_authen_resync_geran
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -980,9 +980,9 @@ DREF VLR subscr IMSI:901700000010650 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Failure with Resync cause, VLR sends GSUP to HLR to resync
-  rx from MS: pdisc=0x05 msg_type=0x1c
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_FAIL
 DREF IMSI:901700000010650: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_FAIL (0x5:0x1c)
 DMM IMSI:901700000010650: MM R99 AUTHENTICATION SYNCH (AUTS = 979498b1f72d3e28c59fa2e72f9c)
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_FAIL
 DVLR GSUP tx: 08010809710000000156f0260e979498b1f72d3e28c59fa2e72f9c201039fa2f4e3d523d8619a73b4f65c3e14d
@@ -1010,9 +1010,9 @@ DREF VLR subscr IMSI:901700000010650 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000010650: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000010650: MM R99 AUTHENTICATION RESPONSE (res = 1df5f0b4f22b696e)
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_WAIT_RESP_RESYNC}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000010650) received res: 1d f5 f0 b4 f2 2b 69 6e 
@@ -1084,14 +1084,14 @@ DREF VLR subscr MSISDN:42342 usage decreases to: 1
   llist_count(&net->subscr_conns) == 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
 DREF VLR subscr MSISDN:42342 usage increases to: 2
   vsub != NULL == 1
@@ -1100,9 +1100,9 @@ DREF VLR subscr MSISDN:42342 usage increases to: 2
   vsub->tmsi == 0xffffffff
 DREF VLR subscr MSISDN:42342 usage decreases to: 1
 - MS sends TMSI Realloc Complete
-  rx from MS: pdisc=0x05 msg_type=0x5b
+  MSC <--RAN_GERAN_A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF MSISDN:42342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:42342
 DVLR vlr_lu_fsm(901700000010650){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(901700000010650){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
@@ -1143,10 +1143,10 @@ talloc_total_blocks(tall_bsc_ctx) == 9
 
 ===== test_umts_authen_resync_utran
 - Location Update request causes a GSUP Send Auth Info request to HLR
-  rx from MS: pdisc=0x05 msg_type=0x08
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_MT_MM_LOC_UPD_REQUEST
   new conn
 DREF unknown: MSC conn use + 1 == 1
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_LOC_UPD_REQUEST (0x5:0x8)
 DREF unknown: MSC conn use + 1 == 2
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Allocated
 DMM Subscr_Conn(901700000010650){SUBSCR_CONN_S_INIT}: Received Event SUBSCR_CONN_E_START
@@ -1190,9 +1190,9 @@ DREF VLR subscr IMSI:901700000010650 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Failure with Resync cause, VLR sends GSUP to HLR to resync
-  rx from MS: pdisc=0x05 msg_type=0x1c
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_MT_MM_AUTH_FAIL
 DREF IMSI:901700000010650: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_FAIL (0x5:0x1c)
 DMM IMSI:901700000010650: MM R99 AUTHENTICATION SYNCH (AUTS = 979498b1f72d3e28c59fa2e72f9c)
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_WAIT_RESP}: Received Event VLR_AUTH_E_MS_AUTH_FAIL
 DVLR GSUP tx: 08010809710000000156f0260e979498b1f72d3e28c59fa2e72f9c201039fa2f4e3d523d8619a73b4f65c3e14d
@@ -1220,9 +1220,9 @@ DREF VLR subscr IMSI:901700000010650 usage decreases to: 1
   auth_request_sent == 1
   lu_result_sent == 0
 - MS sends Authen Response, VLR accepts and sends SecurityModeControl
-  rx from MS: pdisc=0x05 msg_type=0x54
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_MT_MM_AUTH_RESP
 DREF IMSI:901700000010650: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_AUTH_RESP (0x5:0x14)
 DMM IMSI:901700000010650: MM R99 AUTHENTICATION RESPONSE (res = 1df5f0b4f22b696e)
 DVLR VLR_Authenticate(901700000010650){VLR_SUB_AS_WAIT_RESP_RESYNC}: Received Event VLR_AUTH_E_MS_AUTH_RESP
 DVLR SUBSCR(IMSI:901700000010650) received res: 1d f5 f0 b4 f2 2b 69 6e 
@@ -1303,14 +1303,14 @@ DREF VLR subscr MSISDN:42342 usage decreases to: 1
   llist_count(&net->subscr_conns) == 1
 msc_subscr_conn_is_accepted() == false
   requests shall be thwarted
-DRLL Dispatching 04.08 message, pdisc=3
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x03 msg_type=0x05
-DRLL Dispatching 04.08 message, pdisc=5
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x05 msg_type=0x33
-DRLL Dispatching 04.08 message, pdisc=6
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x06 msg_type=0x19
-DRLL Dispatching 04.08 message, pdisc=9
-DRLL subscr MSISDN:42342: Message not permitted for initial conn: pdisc=0x09 msg_type=0x01
+DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_CC_SETUP
+DRLL Dispatching 04.08 message unknown 0x33 (0x5:0x33)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: unknown 0x33
+DRLL Dispatching 04.08 message GSM48_MT_RR_SYSINFO_1 (0x6:0x19)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_MT_RR_SYSINFO_1
+DRLL Dispatching 04.08 message GSM48_PDISC_SMS:0x01 (0x9:0x1)
+DRLL subscr MSISDN:42342: Message not permitted for initial conn: GSM48_PDISC_SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
 DREF VLR subscr MSISDN:42342 usage increases to: 2
   vsub != NULL == 1
@@ -1319,9 +1319,9 @@ DREF VLR subscr MSISDN:42342 usage increases to: 2
   vsub->tmsi == 0xffffffff
 DREF VLR subscr MSISDN:42342 usage decreases to: 1
 - MS sends TMSI Realloc Complete
-  rx from MS: pdisc=0x05 msg_type=0x5b
+  MSC <--RAN_UTRAN_IU-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF MSISDN:42342: MSC conn use + 1 == 2
-DRLL Dispatching 04.08 message, pdisc=5
+DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 DMM TMSI Reallocation Completed. Subscriber: MSISDN:42342
 DVLR vlr_lu_fsm(901700000010650){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(901700000010650){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
diff --git a/tests/msc_vlr/msc_vlr_tests.c b/tests/msc_vlr/msc_vlr_tests.c
index 2049e9f8e..6da34aed6 100644
--- a/tests/msc_vlr/msc_vlr_tests.c
+++ b/tests/msc_vlr/msc_vlr_tests.c
@@ -69,6 +69,17 @@ struct msgb *msgb_from_hex(const char *label, uint16_t size, const char *hex)
 	return msg;
 }
 
+const char *gh_type_name(struct gsm48_hdr *gh)
+{
+	return gsm48_pdisc_msgtype_name(gsm48_hdr_pdisc(gh),
+					gsm48_hdr_msg_type(gh));
+}
+
+const char *msg_type_name(struct msgb *msg)
+{
+	return gh_type_name((void*)msg->data);
+}
+
 void dtap_expect_tx(const char *hex)
 {
 	/* Has the previously expected dtap been received? */
@@ -153,8 +164,10 @@ void rx_from_ms(struct msgb *msg)
 	int rc;
 
 	struct gsm48_hdr *gh = msgb_l3(msg);
-	log("rx from MS: pdisc=0x%02x msg_type=0x%02x",
-	    gh->proto_discr, gh->msg_type);
+
+	log("MSC <--%s-- MS: %s",
+	    ran_type_name(rx_from_ran),
+	    gh_type_name(gh));
 
 	if (g_conn && !conn_exists(g_conn))
 		g_conn = NULL;
@@ -427,8 +440,9 @@ int __wrap_gsup_client_send(struct gsup_client *gsupc, struct msgb *msg)
 
 int _validate_dtap(struct msgb *msg, enum ran_type to_ran)
 {
-	btw("DTAP --%s--> MS: %s",
-	    ran_type_name(to_ran),
+	struct gsm48_hdr *gh = (void*)msg->data;
+	btw("DTAP --%s--> MS: %s: %s",
+	    ran_type_name(to_ran), msg_type_name(msg),
 	    osmo_hexdump_nospc(msg->data, msg->len));
 
 	OSMO_ASSERT(dtap_tx_expected);