Hi Manoj, To put a call on HOLD, session must be modified by sending a RE-INVITE. When A calls B and A puts call on HOLD, it sends SDP with a=sendonly or inactive. It can also send blackhole SDP as c=0.0.0.0 which is not advisable.
This cause the softswitch/ app server to create a new media server session with B, while A being locally mute. Ofcourse there will be 200 OK sent for RE-INVITE. Regards, Sagar Sheth _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
