Hi, The offerer need to be able to receive any codec that he declared in the offer regardless of answer. The offerer may send a re-invite after the answer to fix the set of codecs to a smaller set. Roni Even
> -----Original Message----- > From: Christer Holmberg [mailto:[EMAIL PROTECTED] > Sent: Friday, November 23, 2007 12:48 PM > To: Dean Willis > Cc: [email protected] > Subject: RE: [Sip] SIPit 21 : Topics that attendees argued about > > Hi, > > >> I agree with Ravi. > >> > >> Eventhough you in theory is supposed to be able to receive what you > >> offer - no matter what you get in the answer - I think that in real > >> life the only codecs that participants will be prepared to send/receive > are > >> the ones sent both in the offer and the answer. That is also the > >> reason > >> why the answer normally doesn't contain additional codecs - it mostly > >> contains a subset of the codecs in the offer. > >So how do you deal with asymmetric encoding? > > You may use different codecs in each direction (eventhough I don't think > it happens very often), as long as all codecs have been present in both > the offer and the answer. > > Regards, > > Christer > > > > > > _______________________________________________ > 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 _______________________________________________ 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
