On Wed, 2009-10-21 at 02:11 -0400, M. Ranganathan wrote: > The following problem relates to several JIRA issues involving Skype > and the SMC phone. > > Skype sends an INVITE (SDP) to the smc phone. The SMC phone returns > multiple codec choices in the 200 OK for the response. This completely > confuses the Skype SIP trunk. I made numerous tries to compensate for > this using re-INVITEs so as to make it dynamic and end to end but > nothing completely worked for all scenarios. I am wondering if the > right strategy would be as follows: > > > Skype sends an SDP offer to the SMC phone. > > Let A be the set of codecs in the OFFER. > Let B be the set of codecs in the Answer. > > SipXbridge computes the intersection of A and B and picks a single > codec from that intersection to send as an answer back to Skype. > > This is not the same thing as clamping down the codecs or using a > predefined exclude list but I think it will solve the > interoperability issue with skype. > > Would this be a good thing for sipxbridge to implement?
I think not. This is a very serious bug in offer/answer at Skype, and they should fix it. _______________________________________________ sipx-dev mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-dev Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-dev sipXecs IP PBX -- http://www.sipfoundry.org/
