Thanks Jeroen,

I see what you mean, the parameters are invalid. It's a shame that "20.39
To" does not refer to this table.

Matt

-----Original Message-----
From: Jeroen van Bemmel [mailto:[EMAIL PROTECTED]
Sent: 09 November 2005 10:33
To: Matthew Gardiner; [email protected]
Subject: Re: [Sip-implementors] Are some SIP URL parameters invalid for
the URIwith a To: header ?


Matthew,

See table 1 in RFC3261 (section 19.1.2)

Jeroen

----- Original Message ----- 
From: "Matthew Gardiner" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, November 09, 2005 10:39 AM
Subject: [Sip-implementors] Are some SIP URL parameters invalid for the 
URIwith a To: header ?


> Hi all,
>
> I have inherited the maintenance of a SIP stack, and after a certain 
> degree
> of "bug-hunting",  I discovered that the stack was removing any occurances
> of the following URI-parameters from the URI within the To header:
>
> transport, ttl, maddr
>
> I have searched through my main sources of core SIP reference (3261 and 
> Alan
> Johnston's book) and can find no reference to certain URI parameters being
> invalid in a To: header. Perhaps the previous maintainer removed these as
> the To: header is not relevant to routing, however it does seem a bit over
> vigilant to me?
>
> Could anyone comment as to whether such URI-parameters are actually 
> invalid
> in such a header and whether or not the stack is right to remove them?
>
> thanks for your time,
>
> Matthew Gardiner
> Software Enginneer
> Aculab
>
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> Sip-implementors mailing list
> [email protected]
> http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors 
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