Struggling with a sip trunk provider where polycom cancels after the 183 message. The only thing different I see between this and other providers is the SDP feilds.
This provider sends the codec in the media description but I do not see a corresponding Media attribute for the codec. Is that valid? For example, the sdp looks this: v=0 o=PITPACT-SBC-01 513746131 513746131 IN IP4 67.158.102.9 s=sip call c=IN IP4 67.158.102.250 t=0 0 m=audio 31788 RTP/AVP 0 101 a=rtpmap:101 telephone-event/8000 a=ptime:20 As all other vendors send me somthing like this: v=0 o=root 13348 13348 IN IP4 64.2.142.18 s=session c=IN IP4 64.2.142.18 t=0 0 m=audio 10188 RTP/AVP 0 101 a=rtpmap:0 PCMU/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecv See how the "good" provider sends me the media description with it set to G711 but also as an attribute? Its the only thing I can see why the polycom is canceling the call. And if this is the case, is this a valid response. Thanks, Matt
_______________________________________________ sipx-users mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-users/
