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Bug #6216
closedmobile: MT calls not working anymore
Start date:
10/10/2023
Due date:
% Done:
100%
Resolution:
Spec Reference:
Description
With recent osmocom-bb (22e79a87faaa8137e559908d4f90037603fb377a) mobile originating calls work, but mobile terminated do not.
From what I can see, the mobile fails to send CC messages, likely due to "Message unhandled at this state" errors:
DMNCC INFO mnccms.c:114 half rate v3 not supported DMNCC INFO mnccms.c:127 net suggests unknown speech version 11 DMNCC INFO mnccms.c:104 net suggests full rate v1 DMNCC INFO mnccms.c:439 only supported full rate codec is given, using it DMNCC INFO mnccms.c:455 Incoming call (from 15843 callref 80000001) DMNCC INFO mnccms.c:149 support TCH/F only DCC INFO gsm48_cc.c:894 sending CALL CONFIRMED (proceeding) DCC DEBUG gsm48_cc.c:237 new state CALL_PRESENT -> MO_TERM_CALL_CONF DCC INFO gsm48_cc.c:176 Sending 'CALL_CONF' using MMCC_DATA_REQ (callref=80000001, transaction_id=8) DMM INFO gsm48_mm.c:4424 (ms 1) Received 'MMCC_DATA_REQ' event in state MM connection active DMM INFO gsm48_mm.c:4430 -> callref 80000001, transaction_id 8 DRR INFO gsm48_rr.c:6899 (ms 1) Message 'RR_DATA_REQ' received in state dedicated (sapi 96) DRR NOTICE gsm48_rr.c:6925 Message unhandled at this state. <-- (!) DMNCC INFO mnccms.c:476 Ring! DCC INFO gsm48_cc.c:925 sending ALERTING DCC DEBUG gsm48_cc.c:237 new state MO_TERM_CALL_CONF -> CALL_RECEIVED DCC INFO gsm48_cc.c:176 Sending 'ALERTING' using MMCC_DATA_REQ (callref=80000001, transaction_id=8) DMM INFO gsm48_mm.c:4424 (ms 1) Received 'MMCC_DATA_REQ' event in state MM connection active DMM INFO gsm48_mm.c:4430 -> callref 80000001, transaction_id 8 DRR INFO gsm48_rr.c:6899 (ms 1) Message 'RR_DATA_REQ' received in state dedicated (sapi 96) DRR NOTICE gsm48_rr.c:6925 Message unhandled at this state. <-- (!)
Same happens when I try to answer the call:
DCC INFO gsm48_cc.c:956 sending CONNECT DCC INFO gsm48_cc.c:340 starting timer T313 with 30 seconds DCC DEBUG gsm48_cc.c:237 new state CALL_RECEIVED -> CONNECT_REQUEST DCC INFO gsm48_cc.c:176 Sending 'CONNECT' using MMCC_DATA_REQ (callref=80000001, transaction_id=8) DMM INFO gsm48_mm.c:4424 (ms 1) Received 'MMCC_DATA_REQ' event in state MM connection active DMM INFO gsm48_mm.c:4430 -> callref 80000001, transaction_id 8 DRR INFO gsm48_rr.c:6899 (ms 1) Message 'RR_DATA_REQ' received in state dedicated (sapi 96) DRR NOTICE gsm48_rr.c:6925 Message unhandled at this state. <-- (!)
Please find a PCAP (with GSMTAP logging) attached.
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