Many third party call control implementations wind up using a B2BUA (back to back user agent) as described in RFC3725 and other documents.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Walton, Ashley B (Ashley) Sent: Thursday, September 28, 2006 8:43 AM To: [email protected] Subject: [Sip-implementors] SIP Call Control Gentlemen, I have started what I suspect is going to be a long journey into SIP and despite having done a fair amount of research thus far I get the impression I have just begun to scrape the surface. One thing that I have not been able to gain any clear resolution in my mind about is third party call control interaction for UA's (i.e. by CTI applications) is defined, I have come across the mention of SIP REFER in passing but this does not seem to handle such things in entirety. In my mind I would imagine a stateful proxy may be able to influence call interaction for a UA/SIP end point (comments?). Does anybody have any insight in this regard? Thanks, Ashley _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
