From: Paul Kyzivat <[EMAIL PROTECTED]> UA 1 uses an INVITE with a Join header, to either UA 2 or UA 3, where the Join header references the dialog id. See RFC 3911.
From: "Michael Procter" <[EMAIL PROTECTED]> And if you want UA1 to sit in the middle of all the media, you could then send an INVITE/Replaces to the other UA (not the one you sent an INVITE/Join). I'd never seen that trick. Thanks! The latter scenario is what I was looking for. And it has an interesting side-effect: UA 2 is momentarily performing an ad-hoc conference between the old UA 2-to-UA 3 dialog and the new UA 1-to-UA 2 dialog. That suggests that it is desirable to have every UA implement the Join header to the point of doing two-dialog ad-hoc conferencing, even if it cannot give good audio quality, as the ad-hoc conference may be a transitory state. Dale _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
