Iñaki Baz Castillo wrote: > 2009/2/25 Klaus Darilion <klaus.mailingli...@pernau.at>: > >>> But if Bob sends G711, how will detect Alice that the incoming RTP is not >>> G729? >> There is the payloadtype field in the RTP header. So it is easy to differ >> them. > > 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. Regards, -- Maksym Sobolyev Sippy Software, Inc. Internet Telephony (VoIP) Experts T/F: +1-646-651-1110 Web: http://www.sippysoft.com MSN: sa...@sippysoft.com Skype: SippySoft _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
