Dear elision, Is any device provide this type of configuration check it out what other product are doing for this?
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Elison Niven Sent: Thursday, February 25, 2010 6:12 PM To: [email protected] Subject: [Sip-implementors] G723.1 H and G723.1 L SDP negotiation (yet again) Hi List, I know this has been discussed and asked a lot of times in the past but still I find no affirmative solution. For a UA that supports both G7231-H and G7231-L, SHOULD it specify both the codecs in the offer that it sends? If the UA is willing to specify both the codecs in the offer that it sends (because it specifies two different codecs in its user interface), what should be the method of specifying the codecs in the SDP body? I find two possible ways of specifying both the codecs in the offer: Case 1: Both codecs use different payload types, one of them uses a dynamic payload type. m = audio 8000 RTP/AVP 4 97 m = rtpmap:4 G723/8000 m = fmtpmap:4 bitrate=5.3 m = rtpmap:97 G723/8000 m = fmtpmap:97 bitrate=6.3 Case 2: Both codecs use the same static payload type. m = audio 8000 RTP/AVP 4 4 m = rtpmap:4 G723/8000 m = fmtpmap:4 bitrate=5.3 m = rtpmap:4 G723/8000 m = fmtpmap:4 bitrate=6.3 Which of the above SDP offers seems valid? Suppose I receive an answer from UA2 to the offer in Case 1 as: m = audio 8000 RTP/AVP 4 m = rtpmap:4 G723/8000 m = fmtpmap:4 bitrate=5.3 What should be the payload of the packets that UA2 sends? Should it be 4 or 97? Best Regards, Elison _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors Email Scanned for Virus & Dangerous Content by : www.CleanMailGateway.com _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
