Asymmetric media configurations are in general possible. See SDP Offer/Answer, RFC 3264. Both directions are independent. Thus, different media configurations may be negotiated for the two Offerer-to-Answerer directions.
To the folks responsible for these RFCs: this is a FAQ since years and years, it would be really beneficial to make such conceptual things more explicit in the RFC texts. > -----Original Message----- > From: sip-implementors-boun...@lists.cs.columbia.edu > [mailto:sip-implementors-boun...@lists.cs.columbia.edu] On > Behalf Of Saúl Ibarra Corretgé > Sent: Montag, 29. November 2010 14:13 > To: varun > Cc: sip-implementors@lists.cs.columbia.edu > Subject: Re: [Sip-implementors] dynamic payload negotiation > > > Also I believe that even static paylaod types can be used > as dynamic ones. > > So lets say party A sends G711 a-law with payload type 0 > but party B sends G711 a-law with dynamic payload 100 so what > should happen in this case. > > > > Can you provide a reference to this? Is it really allowed? > > > Regards, > > -- > /Saúl > http://saghul.net | http://sipdoc.net > > _______________________________________________ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
