[asterisk-dev] Broken SIP dialog if INFO messages received beforefinal OK

[Nick Lewis]

> Double checking the RFC confirms that the 2XX response to an INVITE
requires the Contact Header. 

Where is this specified? I have looked at RFC2976 and it seems to
prohibit a Contact Header in the 2XX response

          Header                    Where    INFO
          ------                    -----    ----
          Contact                     R       o
          Contact                    1xx      -
          Contact                    2xx      -
          Contact                    3xx      -
          Contact                    485      -


-- N_L

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