Subject: [xcon] Removing media stream from all legs or from own leg in tightly coupled SIP conferencing

From: "Sedlacek, Ivo" <[email-masked]>
Date: Thu, 31 Aug 2006 13:53:10 +0200

Hello,
 
RFC4353 defines the tightly coupled SIP conferencing. 
 
It also defines how the media streams are removed from the conference
(5.6. Adding and Removing Media). It says that when the port of media
stream is set to 0 in an SDP offer/answer from a participant, the
participant does not want to use the media stream any more. The focus
may accept this for the participant leg's only or the focus may apply
this request to all the legs - the processing is left open in RFC4353.
 
In some conference types both options may be allowed for a participant.
Thus the participant may have possibility to signal both actions:
1) either participant wants to remove the media stream from own leg
(between participant and focus)
2) or participant wants to remove the media stream from all the legs
(completely from the conference)
 
Based on the participant's signalling, the focus has to distinguish 1)
and 2) and to do the appropriate actions.

Is there any SIP/SDP mechanism how to detect whether the participant
wants 1) or 2)?
 
I noticed the CPPP and COMP, but they seem to be based on SOAP or HTTP.
 
Kind regards
 
Ivo Sedlacek
Siemens
ANF DATA MCS CD3
phone: +420 54310 6532
mailto: [email-masked]
 
Mailcode: C0gmHhFp 

_______________________________________________
XCON mailing list
[email-masked]
https://www1.ietf.org/mailman/listinfo/xcon