See
http://www.ietf.org/internet-drafts/draft-ietf-sipping-sip-offeranswer-08.txt
In short, its legal for it to either be absent, or same as the first
answer. Absent is preferred.
Thanks,
Paul
Thomas george wrote:
What will be SDP in the 200 OK to INVITE, if PRACK with Answer and
UPDATE transaction happened before the INVITE's 200 is sent?
rgds,
Thomas
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