Offer: - Session Description: media to flow from 192.168.2.103 from an X-Lite softphone/CounterPath Eye Beam. Connection information included here as part of session description - Time Description: usual - Media Description: Audio calls at port 34362 with two formats offered 0, 101. The only thing odd is that the m line is followed by an attribute line which is not describing the rtpmap attribute. But that could be because it is a static payload type. So the attribute is optional for this.
Answer: - Session Description: media to flow from 88.215.61.3 from an MSX9 client. Connection information not included here - Time Description: usual - Media Description: Audio calls at port 56018 with two formats offered 0, 101 and connection information for this media is described as part of media description. "In lumpsump EyeBeam offers an telephone audio call with two codecs 0, 101 with audio streaming at addr 192.168.2.103:34362 and MSX9 responds to this offer with two codecs 0, 101 with audio streaming at addr 88.215.61.3:56018" I would refer RFC-2327 for more details on SDP Best Regards, Indresh >>-----Original Message----- >>From: [email protected] >>[mailto:[email protected]] On >>Behalf Of ext Nahum Nir >>Sent: Thursday, February 18, 2010 9:54 AM >>To: [email protected] >>Subject: [Sip-implementors] Please explain to me the >>following SDPnegotiation >> >>Offer >> >> >> >>v=0 >> >>o=- 4 2 IN IP4 192.168.2.103 >> >>s=<CounterPath eyeBeam 1.5> >> >>c=IN IP4 192.168.2.103 >> >>t=0 0 >> >>m=audio 34362 RTP/AVP 0 101 >> >>a=alt:1 1 : hlOLopIA MH2kNKJY 192.168.2.103 34362 >> >>a=fmtp:101 0-15 >> >>a=rtpmap:101 telephone-event/8000 >> >>a=sendrecv >> >>a=x-rtp-session-id:E44A2C3559FC4E91BD382CEB4A5EAE0F >> >> >> >>Answer >> >> >> >>v=0 >> >>o=MSX9 15376954 5380 IN IP4 88.215.61.3 >> >>s=sip call >> >>t=0 0 >> >>m=audio 56018 RTP/AVP 0 101 >> >>c=IN IP4 88.215.60.14 >> >>a=rtpmap:0 PCMU/8000 >> >>a=rtpmap:101 telephone-event/8000 >> >>a=fmtp:101 0-15 >> >>_______________________________________________ >>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
