Abhishek <abhishek.pha...@gmail.com> writes: > A --> Switch --> B > All 3 nodes connected with SIP connectivity.
> A sending INVITE to B but does not contain Require:100REL. Switch > forwards Invite to B but has Require:100REL. > B responds with 180 without SDP, Switch forwards the same to A. B then > sends 183+SDP, which switch sends to A. Then A sends 200OK which -----------------------------------------------^ I assume you mean "B" here. > Switch does not forward to A. B sends 200OK multiple times as per > standard and Switch disconnects session at both the ends with SIP > cause code 500. > > Seeking reason for such behaviour. It appears that Switch does not recognize the 200 as being part of the dialog. There are innumerable reasons why this might happen. It is hard for us to provide any help if you do not provide the INVITE (from Switch to B) and the 200 (from B to Switch) for some example dialog. Dale _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
