Dale,

I guess its looks different in sip forum..

Because i have not seen a single packet in original format who is taking
"%3A" in userpart..However i am again sending you the Request line which is
actually quested in uri's.


Request-Line: INVITE
sip:[email protected]<sip%[email protected]>SIP/2.0
Request-URI: sip:[email protected] <sip%[email protected]>

Whereby in TO header(of the same INVITE) I do not have the “1” in user part
as below.

To: sip:[email protected] <sip%[email protected]>

Thanks,
Nitin Kapoor

On 18 March 2010 13:52, WORLEY, DALE R (DALE) <[email protected]> wrote:

> _______________________________________
> From: [email protected] [
> [email protected]] On Behalf Of Nitin Kapoor
> [[email protected]]
>
> To: sip:[email protected] <sip%[email protected]> <
> sip%[email protected] <sip%[email protected]>>
>
> _______________________________________________
>
> In general, a SIP element should not consider the value of the To header.
>  However, the To header is required to conform to a specific syntax, and
> this To header does not.  The basic structure for this type of To header is
> "display-name <SIP-URI>".  However, if display-name is not quoted, it is
> restricted to being a "token", and "token" may not contain ":" or "@".  The
> text between <...> is supposed to be a SIP URI, but the ":" is replaced by
> "%3A", and there is no escaping defined for that position.  See section 25.1
> of RFC 3261 for the details.
>
> So until you correct the To header (who is generating it?) there is no
> reason to expect any SIP element to accept the request.
>
> Dale
>
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