Sesh, There could be various use case involved with INVITE without SDP depends on your application.
One of the most frequent scenario for me exist during call transfer where PBX/Server wants to connect transferee with transfer target but is not aware about media capabilities of transfer target. In this case, PBX/Server sends INVITE w/o SDP to transfer target and gets the offer in 200 OK (when transfer target answers the call). PBX here matches the media capabilities of transferee and transfer target (received in 200 OK) and then send appropriate SDP answer in ACK to transfer target. Similar cases also exist during call park etc. Best Regards, Vivek Batra On Wed, Dec 17, 2014 at 10:06 AM, Seshagiri Kondaveti < seshagiri.kondav...@radisys.com> wrote: > > > Hi all, > > What is the use case for Inivite without SDP ? > I see most of the softphones sends out invite with SDP but don’t know > when to use invite without SDP. > > Request you to share your experience. > > Regards > Sesh > > _______________________________________________ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > -- Best Regards, Vivek Batra _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
