Hi Abhishek, Can you check whether it resolves if you send the full SDP (same as initial offer but retain the last negotiated media direction) in the 200 OK response to the INVITE without. SDP request?
Thanks and Regards Arun A. Tagare On Wed 23 May, 2018, 8:35 PM Abhishek, <abhishek.pha...@gmail.com> wrote: > Hello, > > > SS7 Switch —> Gateway Switch —> SIP SBC > > > > Call flow is as mentioned. > > > > SIP call gets established between Gateway Switch node and SIP SBC node. > > > > > > > > Gateway Switch node initiates Re Invite without SDP. > > > > SIP SBC node responds with 200 OK along with SDP keeping all fields same > as previous 200 OK including ‘sess-version’ field. > > > > Gateway Switch node acknowledge this message with ACK without SDP. > > > > SIP SBC node sends BYE to this response and mentions Reason as > cause=488, No answer to offer. > > > > > > > > Would like to understand way forward for resolution of this issue. > > > Thank you in advance. > > Best Regards, > Abhishek > _______________________________________________ > 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
