We have a call flow of CUCM 7.1 IP phone --- GK controlled ICT --- GK -- matched default tech prefix ---- voice gateway --- QSIG trunk --- PBX --- destination phone .
Calls complete but with no ringback before called party picks up. Debug q931 on the voice gateway with the QSIG trunks shows the call set up with progress indicator indicating ring back is sent be we don't hear it. Any ideas appreciated!
*Nov 9 15:17:59.917: ISDN Se1/0/0:23 Q931: TX -> SETUP pd = 8 callref = 0x1C79 Bearer Capability i = 0x8090A2 Standard = CCITT Transfer Capability = Speech Transfer Mode = Circuit Transfer Rate = 64 kbit/s Channel ID i = 0xA98382 Exclusive, Channel 2 Calling Party Number i = 0x0081, '4686328608' Plan:Unknown, Type:Unknown Called Party Number i = 0x80, '900496142754857' Plan:Unknown, Type:Unknown
Can you post a copy of your voice gateway with the QSIG PBX? Typically it has something to do with the the Dial Peer confg, (adding a statement for ring back) or at the CUCM side making sure that Early Media offer (I think, cant recall) is checked.
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