Also have a look draft-rosenberg-sip-3pcc-01 talks about the concept, make sure your useragent supports reinvite (fairly unusual if it doesn't)
also consider using something like JAIN SLEE which has a NIST SIP RA and Third party call control libraries available - i.e. don't write your own unless you need to! Gardell, Steven wrote: > 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 > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
