Symptom

CUBE is adding a=fmtp:9 bitrate=64 in SDP for G.722 codec. the call was rejected by destination. SDP in Incoming INVITE :- t=0 0 m=audio 7156 RTP/AVP 9 101 a=rtpmap:9 G722/8000 a=rtpmap:101 telephone-event/8000 a=sendrecv SDP CUBE is sending in outgoing INVITE :- a=rtpmap:9 G722/8000 a=fmtp:9 bitrate=64 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-15 a=rtpmap:13 CN/8000 a=ptime:20 For g722 codec we have 3 variation w.r.t bitrate/bandwidth 48000, 52000 and 64000. out of these only 64000 is used for sip signalling and remaining 2 (48k and 52k) are used for h323. We need to remove the fmtp attribute containing the bitrate as per the requirement of customer .

Conditions

Behavior is same in G2 and G3 . Have tested on many releases.

Workaround

The issue can be resolved by sip profile to modify "a=fmtp:9 bitrate=64" to "a=fmtp:9 bitrate=64000" or remove this line completely .

Further Problem Description