[Kamailio-Users] Reg. SIP conferencing support for RFC 4579

[Iñaki Baz Castillo]

2009/2/4 Padmaja R <urvthme at gmail.com>:
> Say A and B are in a SIP call, and A and B suddenly decide to have a
> conference with C. A puts B on hold and dials C' s number. After call
> between A and C is up, if A presses hook flash, this sends an invite to the
> conference application namely: conf at openseratlocalhost:5060 (which is the ip
> and port  number at which my openser proxy would be listening). The server
> should then send back 200 Ok with the contact header containing the isfocus"
> parameter of the form -Contact: <sip:conference1 at mediaproxyip;isfocus> The
> isfocus is an RFC 4579 based feature. The 200 Ok responses to other invites
> (normal calls that do not create conference) should not include this isfocus
> in the contact header of 200 Ok.
>
> Finally, the openser proxy should be able to contact the media proxy on
> receiving an invite to create the conference and send that ip and focus
> information in the 200 Ok. The UA -A would then send a REFER to B and C to
> refer to the media server and they disconnect with A. Then all three UAs
> would individually send invite to the uri returned in the contact header and
> join the conference.

That is not a proxy task, but a SIP application server (probably a
B2BUA) even if it just handles signalling.


-- 
Iñaki Baz Castillo
<ibc at aliax.net>