Hello,
There is no request or response header for passing ISDN IEs. Mechanisms
do exist for ISUP/QSIG messages though. See
http://www.ietf.org/internet-drafts/draft-ietf-sip-isup-02.txt and
http://www.ietf.org/internet-drafts/draft-vemuri-sip-t-context-02.txt
for some related information. And it was brought up recently for
defining similar support for Q.931. However it's questionable whether
work will proceed within the IETF.
regards,
Bert
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of
> Don Mounday
> Sent: Wednesday, August 22, 2001 6:04 AM
> To: [EMAIL PROTECTED]
> Subject: [Sip-implementors] User-to_user data with SIP?
>
>
>
> Is there an accepted header to use to pass user-to-user data
> in an INVITE or
> reply message? The purpose of this is to pass some
> application context data
> along with the INVITE that can be used by the callee, such as the ISDN
> user-to-user information elements.
>
>
>
> Don Mounday
> Falcon Technology Group, LLC
>
>
> [EMAIL PROTECTED]
>
>
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