[SIPForum-discussion] The process sequence

Mike Jiang mike.jiang at andersontaylor.com
Thu Jun 18 17:35:08 UTC 2009

Hi All,

      One quick question: I was wondering if the Ringing (180) is always
occurring ahead of the Session Progress (183).

      In my case, the 183 response always happened before the 180 happened.




      Mike J.


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