-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Worley, Dale R (Dale) Sent: Thursday, September 30, 2010 1:43 PM To: sipXecs developer discussions Subject: Re: [sipx-dev] ITSP handling of Invites without SDP
________________________________________ From: [email protected] [[email protected]] On Behalf Of Todd Hodgen [[email protected]] I have an ITSP that has a new platform that differs from its legacy platform in that it can only handle Invites that have the SDP. In my testing with them, when a call is answered by the auto attendant, and then transferred to an extension, it rings and then hangs the call up. They call this 3PCC, essentially they can only handle Invites with SDP. This new platform supports diffserve marking, which is a great reason to be able to move to it, but the lack of support for Invites without SDP is an obstacle it seems. They claim this is perfectly acceptable in the standards. Can someone confirm if that is the case or not? ________________________________________ Har! It is a requirement of SIP (and has been since the beginning) to accept INVITEs without SDP. The number of situations where this is important is small, but music-on-hold is generally one of them. If the ITSP claims that they are conformant, I would suggest finding another ITSP -- they may have other bad habits. Dale _______________________________________________ Dale - thanks for the Definitive answer on this, as always I appreciate your sage advice. _______________________________________________ sipx-dev mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-dev/
