Hello, Can anyone please help me out on the below issue.
Thanks, Nitin Kapoor On 12 March 2010 09:06, Nitin Kapoor <[email protected]> wrote: > Hello Friends, > > I am facing the problem with one of my client. I can see we are getting the > 2 codecs in SDP(G.711 & G.729) with payload "0, 101, 19". > > Now here is my doubt is that whenver my client is sending the SDP in > initial OFFER with G.729 its offering "Media format = 0".But when i checked > the RFC 3264 and others, then i observed that it can be possible if you have > two codecs in one SDP then one media format can be "0". > > Below is the OFFERED SDP from my SOURCE UA. > > Media Description, name and address (m): audio 17890 RTP/AVP 0 101 19 > Media Type: audio > Media Port: 17890 > Media Protocol: RTP/AVP > Media Format: ITU-T G.711 PCMU > Media Format: DynamicRTP-Type-101 > Media Format: Comfort noise (old) > > Connection Information (c): IN IP4 212.48.160.163 > Connection Network Type: IN > Connection Address Type: IP4 > Connection Address: 212.48.160.163 > > Media Attribute (a): rtpmap:0 PCMU/8000 > Media Attribute Fieldname: rtpmap > Media Format: 0 > MIME Type: PCMU > Sample Rate: 8000 > > Media Attribute (a): rtpmap:101 telephone-event/8000 > Media Attribute Fieldname: rtpmap > Media Format: 101 > MIME Type: telephone-event > Sample Rate: 8000 > > Media Attribute (a): fmtp:101 0-16 > Media Attribute Fieldname: fmtp > Media Format: 101 [telephone-event] > Media format specific parameters: 0-16 > Media Attribute (a): rtpmap:19 CN/8000 > Media Attribute Fieldname: rtpmap > Media Format: 19 > MIME Type: CN > Sample Rate: 8000 > > Media Attribute (a): ptime:20 > Media Attribute Fieldname: ptime > Media Attribute Value: 20 > > Here is SDP is offered by my Remote Entity in 183 Session progress in the > correspondence of of INITIAL INVITE. > > Media Description, name and address (m): audio 5870 RTP/AVP 0 101 > Media Type: audio > Media Port: 5870 > Media Protocol: RTP/AVP > Media Format: ITU-T G.711 PCMU > Media Format: DynamicRTP-Type-101 > Media Attribute (a): rtpmap:0 PCMU/8000 > Media Attribute Fieldname: rtpmap > Media Format: 0 > MIME Type: PCMU > Sample Rate: 8000 > Media Attribute (a): sendrecv > Media Attribute (a): rtpmap:101 telephone-event/8000 > Media Attribute Fieldname: rtpmap > Media Format: 101 > MIME Type: telephone-event > Sample Rate: 8000 > > > Now the problem which i am facing is that after doing the Negotiation and > the ACK of 200 OK in the correspondence in INITIAL OFFER/INVITE, i am > getting a BYE immediately from my source UA. > > Could anyone please help me to diagnose this. > > Thanks, > Nitin kapoor > > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
