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Private Session Initiation Protocol (SIP) Extensions for Media Authorization

The information below is for an old version of the document that is already published as an RFC.
Document Type
This is an older version of an Internet-Draft that was ultimately published as RFC 3313.
Authors Bill Marshall , David A. Evans
Last updated 2015-10-14 (Latest revision 2002-05-23)
RFC stream Internet Engineering Task Force (IETF)
Additional resources Mailing list discussion
Stream WG state (None)
Document shepherd (None)
IESG IESG state RFC 3313 (Informational)
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD Allison J. Mankin
IESG note Responsible: RFC Editor
Send notices to <>
A new Request for Comments is now available in online RFC libraries.

        RFC 3313

        Title:      Private Session Initiation Protocol (SIP)
                    Extensions for Media Authorization
        Author(s):  W. Marshall, Ed.
        Status:     Informational
        Date:       January 2003
        Pages:      16
        Characters: 36866
        Updates/Obsoletes/SeeAlso:    None

        I-D Tag:    draft-ietf-sip-call-auth-06.txt


This document describes the need for Quality of Service (QoS) and
media authorization and defines a Session Initiation Protocol (SIP)
extension that can be used to integrate QoS admission control with
call signaling and help guard against denial of service attacks.  The
use of this extension is only applicable in administrative domains, or
among federations of administrative domains with previously
agreed-upon policies, where both the SIP proxy authorizing the QoS,
and the policy control of the underlying network providing the QoS,
belong to that administrative domain or federation of domains.

This document is a product of the Session Initiation Protocol Working
Group of the IETF.

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not specify an Internet standard of any kind.  Distribution of this
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