4 Feb
2009
4 Feb
'09
5:45 p.m.
Hi,
For this Asterisk or SEMS won't work ,
So, it can Work on sip Application Server, with Cantata Media Service or
Dialog Media Server
Thanks &Regards
Ravi Prakash Sunkara
VoIP Architect & JAVA-SIP Developer
+91-9999882776
2009/2/4 Iñaki Baz Castillo <ibc(a)aliax.net>
2009/2/4 Padmaja R <urvthme(a)gmail.com>om>:
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@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@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(a)aliax.net>
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