Hi,
 
In section 5.1.1 "Correlation to logs, calls and terminals" of the draft-ietf-sip-events-00.txt the "TO" tag is required in the responses to SUBSCRIBE requests. In section 5.2.1 it says "the From field of a NOTIFY request MUST contain a tag". The question is "Does the tag in the responses (to SUBSCRIBE) and the tag in the From field of a NOTIFY need to be the same? What's the implication/significant of it?"
 
Thanks.
 
-- Dai Ngo
 

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