Hi all, I'd like to know if the Contact header is mandatory for a 200 OK response to an INVITE request.
The RFC doesnt explicitly mention anything in this regard although a 200 OK is mandatory for a REGISTER request. If the originating endpoint receives the Contact header in the 180 Ringing response (which I assume is mandatory), then it knows the location of the remote endpoint, in which case the Contact header would be redundant in the 200 OK response. Waiting for some expert intervention.. :) Regards, -- Sandip Gangakhedkar Mobile:+91-97396-99916 Office: +91-80-4363-3899 Profile: http://www.linkedin.com/in/sandipg
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