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
