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Private Session Initiation Protocol (SIP) Extensions for Media Authorization (RFC3313)

IP.com Disclosure Number: IPCOM000010815D
Original Publication Date: 2003-Jan-01
Included in the Prior Art Database: 2003-Jan-23
Document File: 17 page(s) / 37K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

W. Marshall: AUTHOR [+2]

Abstract

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 text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 7% of the total text.

Network Working Group                                   W. Marshall, Ed.

Request for Comments: 3313                                          AT&T

Category: Informational                                     January 2003

          Private Session Initiation Protocol (SIP) Extensions

                        for Media Authorization

Status of this Memo

   This memo provides information for the Internet community.  It does

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

   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2003).  All Rights Reserved.

Abstract

   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.

Marshall, Ed.                Informational                      [Page 1]

RFC 3313         SIP Extensions for Media Authorization     January 2003

Table of Contents

   1. Scope of Applicability.........................................  2

   2. Conventions Used in this Document..............................  3

   3. Background and Motivation......................................  3

   4. Overview.......................................................  4

   5. Changes to SIP to Support Media Authorization..................  4

      5.1 SIP Header Extension.......................................  5

      5.2 SIP Procedures.............................................  5

        5.2.1 User Agent Client (UAC)................................  6

        5.2.2 User Agent Server (UAS)................................  6

        5.2.3 Originating Proxy (OP).................................  7

        5.2.4 Destination Proxy (DP).................................  7

   6. Examples.......................................................  8

      6.1 Requesting Bandwidth via RSVP Messaging....................  8

        6.1.1 User Agent Client Side.................................  8

        6.1.2 User Agent Server Side................................. 10

   7. Advantages of the Proposed Approach............................ 12

   8. Security Considerations........................................ 13

   9. IANA Considerations............................................ 13

   10. Notice Regarding Intel...