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RFC 3313 on Private Session Initiation Protocol (SIP) Extensions for Media Authorization

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        RFC 3313

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

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

        URL:        ftp://ftp.rfc-editor.org/in-notes/rfc3313.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.

This memo provides information for the Internet community.  It does
not specify an Internet standard of any kind.  Distribution of this
memo is unlimited.

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Joyce K. Reynolds and Sandy Ginoza
USC/Information Sciences Institute


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