From: <[EMAIL PROTECTED]>

   As we know that the Header - Max-Forwards are only for SIP Request
   message, however, if the UAC receives a 183 message with Max-Forwards
   header present, how the UAC should react to such a response? Should the
   call be taken down or go ahead? Is there an explicit description on such
   an error handling? 

You should ignore unexpected headers unless there is a specific reason
not to.

Dale
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