> The point is that, depending on what media the answerer chooses, > different codecs can be used for chosen media streams. > > Yes, "vanilla" SDP allows me to offer audio and video, and > the answerer > can incdicate what it does/doesn't support. But, vanilla SDP does not > allow the offer to say: "Here is audio and video. If you accept both > then let's use these codecs, but if you only choose audio > then let's use > theis other codec".
SDP Capabilities Negotiation does that, too -- and far better than multipart/alternative. -d _______________________________________________ Sip mailing list https://www1.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [EMAIL PROTECTED] for questions on current sip Use [EMAIL PROTECTED] for new developments on the application of sip
