Hi,
cpc parameter is to be defined as tel uri parameter, neither as sip uri parameter
nor as any header parameter.
So, I think, the correct answer is putting it in the user part of sip uri like:
From: <sip:+17005554141;[EMAIL PROTECTED]>;tag=1928301774
This issue is explained in detail in the section 19.1.6, RFC 3261.
Regards,
Takuya
> Hi,
>
> I have a doubt on how to indicate Calling Party Category (CPC) parameter in an
> INVITE message. I had gone through draft "draft-mahy-iptel-cpc-00.txt" that says
> that cpc should be included as the uri parameter of the from header. An example is
> given as :-
>
> INVITE sip:[EMAIL PROTECTED] SIP/2.0
> To: "Bob" <sip:[EMAIL PROTECTED]>
> From: <tel:+17005554141;cpc=payphone>;tag=1928301774
>
> In the example, cpc is represented as parameter of the from uri. Suppose CPC has to
> be used with a sip uri, how should that be included. Is it :-
>
> From: <sip:[EMAIL PROTECTED];cpc=payphone>;tag=1928301774
>
> or is it
> From: <sip:+17005554141;[EMAIL PROTECTED]>;tag=1928301774
>
> I have a feeling that the second option is correct. I wanted to confirm whether my
> understanding is correct.
>
> Is there any other draft or rfc that says how the cpc paramter should be used in SIP
> protocol other than the one i referred.
>
> Rgds
> Krishna
>
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--------
Takuya Sawada
KDDI Corporation (KDDI)
Garden Air Tower, 3-10-10, Iidabashi,
Chiyoda-ku, Tokyo 102-8460, Japan
Tel: +81-3-6678-2997
Fax: +81-3-6678-0286
[EMAIL PROTECTED]
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