Now's the time... while they are still in Beta. They think they have completed interop testing with sipX. I'm hoping to do some testing with them next week on a Mitel system.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Scott Lawrence Sent: Wednesday, October 21, 2009 7:42 AM To: M. Ranganathan Cc: sipX developers Subject: Re: [sipX-dev] Skype is confused by Multiple codec in 200 OK response and a possible solution. 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/ _______________________________________________ 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/
