On 03/31/2011 04:13 PM, Nitin Kapoor wrote: > Dear All, > > I am facing the issue with one of my client, where my Termination is sending > 183 with SDP but my UAC is unable to hear any destination country ringback. > > Hello,
Although this is very weird, but does the SBC also send a 180 Ringing before the 183 with SDP? If not, you can change (I now it's not compliant to standards but still a quick fix) the 183 to a 180 on your proxy and forward it downstream. Because of no reliable 100-response (you said nothing about PRACK) the SDP must be also sent in the 200 OK so you might even strip the payload. Marius > However after connecting the calls there is bi-directional media between 2 > end users. I never faced this kind of issue earlier. Could anyone please > help me to diagnose the issue and what could be the issue for this. > > *INVITE SDP (from UAC to SBC)* > > v=0 > o=Sonus_UAC 10849 14981 IN IP4 203.176.253.100 > s=SIP Media Capabilities > c=IN IP4 203.176.253.101 > t=0 0 > m=audio 9210 RTP/AVP 18 4 8 101 > a=rtpmap:18 G729/8000 > a=rtpmap:4 G723/8000 > a=fmtp:4 annexa=no;bitrate=6.3 > a=rtpmap:8 PCMA/8000 > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-15 > a=sendrecv > a=maxptime:30 > * > 183 w/SDP from (SBC to UAC)* > > v=0 > o=dasbc11 211356 211357 IN IP4 208.80.45.205 > s=sip call > c=IN IP4 208.80.45.207 > t=0 0 > m=audio 38972 RTP/AVP 18 101 > a=rtpmap:18 G729/8000 > a=fmtp:18 annexb=no > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-15 > > Thanks, > Nitin Kapoor > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
