On Wed, 2008-01-16 at 16:11 +0000, Stephen Paterson wrote:
> Hi Srini,
> 
> It is also present in the Contact, Via and Request-Line and as I
> understand it, these are necessary requirements (well, if future
> communication is to be over TCP) but that's not the question.
> 
> The question is, is it valid to have transport=tcp as a URI parameter in
> the To and From headers? Calls are being rejected on this basis. I can't
> find anything forbidding it although I will concede that it is rather
> unnecessary.

Unless the From header cannot be parsed as syntactically valid, I cannot
imagine any reason to reject a call based on the presence or absence of
any url parameter it might have.  Other than the tag, the From header
has no real semantics in SIP - it's essentially decoration.

-- 
Scott Lawrence  tel:+1.781.229.0533;ext=162 or sip:[EMAIL PROTECTED]
  sipXecs project coordinator - SIPfoundry http://www.sipfoundry.org/sipXecs
  CTO, Voice Solutions   - Bluesocket Inc. http://www.bluesocket.com/ 
                                           http://www.pingtel.com/

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