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Recap Motivation Allow for REFER without creating a dialog and automatic subscription to the Refer event package Status The consensus from the last IETF has been incorporated in this version The option tag “norefersub” is NOT RECOMMENDED to be used with the Require header but allowed Mechanism A new header “Refer-Sub” conveys the request for “invoking the feature” in the REFER request and for signaling the feature acceptance in the 2XX response One open question => |