2008/12/22 karthik karthik <[email protected]>: > step3. > meanwhile the callee has sent 200(invite) without 18x directly. > ue<--200(invite)--pcscf<--200(invite)--scscf<--200(invite)-- > ue--ack-->pcscf--ack-->scscf--ack--> > ue sends an ack though it had already sent a cancel. > > what is the expected bahaviour at pcscf? > pcscf knows it has sent 200(cancel) to ue. > still it forwards answer 200(invite) to ue since it is not a b2bua.
Alto consider the following draft: http://tools.ietf.org/html/draft-sparks-sip-invfix-02 It states that a transaction statefull proxy mustn't forward a 200 stateless, so in your case the 200 OK wouldn't arrive to the UAC (if the proxy honors the above draft). -- Iñaki Baz Castillo <[email protected]> _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
