VideoFastUpdate in dual video mode

Hi all,

I would appreciate your help with the following question:
I have a single SIP session of several video streams. Call initiation
(INVITE) contained SDP body with different SDP media descriptors - one
media descriptor for every video stream. (this is common for example
when there is a presentation channel). Please note that each video
stream has different destination port. 
Due to packet loss on one of the streams, I would like to issue
VideoFastUpdate request. However, the VideoFastUpdate is for the entire
session, and I could not find a way to indicate to the remote party
which of the streams requests for an Intra frame.
Please advise.

Thanks,
Oren Libis

_______________________________________________
Sip mailing list  https://www.ietf.org/mailman/listinfo/sip
This list is essentially closed and only used for finishing old business.
Use [email protected] for questions on how to develop a SIP implementation.
Use [email protected] for new developments on the application of sip.
Use [email protected] for issues related to maintenance of the core SIP specifications.