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Re: [dispatch] draft-jesske-sipping-etsi-ngn-reason-04

"Dale Worley" <dworley@nortel.com> Fri, 17 July 2009 18:50 UTC

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From: Dale Worley <dworley@nortel.com>
To: R.Jesske@telekom.de
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Date: Fri, 17 Jul 2009 14:00:37 -0400
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Subject: Re: [dispatch] draft-jesske-sipping-etsi-ngn-reason-04
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Thinking about this discussion, I would add a sentence to the abstract
telling the reader that the Reason header in responses is widely used,
even though it is not officially specified.  Something along these
lines:

        Although the use of the Reason header field in responses is
        considered in RFC 3326, doing so is not specified for any
        existing response code.  Nonetheless, the Reason header field
        has been widely used in responses to carry Q.850 reason codes
        for failure responses to INVITEs that have been gatewayed to
        PSTN systems.  This document specifies and formally permits the
        use of the Reason header field in SIP responses to carry Q.850
        reason codes for this and other purposes.

I think that makes the current situation clear to the uninformed reader
(e.g., me), and it only requires 3 sentences.

Dale

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