El Miércoles, 25 de Febrero de 2009, Maxim Sobolev escribió: > > Yes, this is the point. Are you sure that devices check that payload > > type? or do they assume they will receive the codec negociated in the > > SDP? > > Yes they do. Mixing several payload types within one RTP sessions is > common practice - one payload type for actual audio grames, another for > DTMF packets and third one for comfort noise frames when VAD is enabled.
Yes, but all these payloads have been previously negociated in the SDP. The original question was: - Alice sends a SDP with G729 and G711. - Bob replies a SDP with G729. - Bob sends RTP in G711. Even if Alice suppors G711, this codec was no negociated during SDP exchange. -- Iñaki Baz Castillo _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
