Thanks Brett for your prompt reply. I got the answer of my query in RFC 3261 section 9.2.
Thanks, Satish On Fri, Sep 13, 2013 at 4:32 PM, Brett Tate <br...@broadsoft.com> wrote: > > Before final ACK if the Stack received CANCEL message > > from terminal. then it should response with > > "487 Request Terminated" ? > > If your question is about a 487 response to INVITE, the answer is no since > you have already sent a final response. > > If your question is about a 487 response to CANCEL, the answer is no since > your race condition would result in a 200 (or maybe 481) response. Aspects > (from an INVITE 2xx perspective) are discussed within RFC 5407 section > 3.1.2. I assume 200 response is correct while within Completed state; > however I didn't recheck the RFC 3261 and RFC 6026 state machines > concerning the topic. > > -- Thanks & Regards Satish Agrawal New Delhi-24. _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
