Hi,

Section 7.1 in draft-ietf-sip-session-timer-14.txt says:
"If a Min-SE header is included in the initial session refresh request, the value of the Session-Expires MUST be equal to the value in Min-SE."


I have the following questions:
(1) What is purpose of this rule?

(2) Why does the Session-Expires MUST be equal to the value in Min-SE?

(3) Why should it be only in the initial session refresh request?

Thanks in advance,
John.

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