Hi Praveen, AFAIK Unhold + Video Upgrade in a same INVITE is valid usecase. Searching for Spec reference. will update once I get it.
Could think of one use case. 1. MO make VT call to MT. 2. Call held, Network support only audio announcement. 3. Network downgrades call to audio only and audio direction recvonly at MT. 4. After MO unhold call. Its Upgrade + unhold to MT. Regards, Venkat Ramana On Fri, Jun 8, 2018 at 8:59 PM, Parveen Aggarwal <parveenakara...@gmail.com> wrote: > Dear Experts, > > I am facing one scenario: > > 1. Make video call: Audio and video port non-zero > 2. downgrade video call: audio port non-zero and video port 0 > 3. Network hold the call: audio:sendonly , video port 0 > 4. network sending re-invite without SDP, User agent sending offer in 200 > OK but with video port 0 > 5. Network sending ACK with audio: sendonly, video port: 0 > === > after this Network is resuming the call with re-invite but at the same time > it is sending video port as non-zero. > > Is it a correct behavior to update audio media direction from recvonly to > sendrecv and updating the Video port in same re-INVITE? (Any spec > reference) > > Thanks for your advice. > > Regards, > Parveen > _______________________________________________ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
