RFC 3521 (rfc3521) - Page 1 of 25

Framework for Session Set-up with Media Authorization

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Network Working Group                                         L-N. Hamer
Request for Comments: 3521                                       B. Gage
Category: Informational                                  Nortel Networks
                                                                H. Shieh
                                                           AT&T Wireless
                                                              April 2003


         Framework for Session Set-up with 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

   Establishing multimedia streams must take into account requirements
   for end-to-end QoS, authorization of network resource usage and
   accurate accounting for resources used.  During session set up,
   policies may be enforced to ensure that the media streams being
   requested lie within the bounds of the service profile established
   for the requesting host.  Similarly, when a host requests resources
   to provide a certain QoS for a packet flow, policies may be enforced
   to ensure that the required resources lie within the bounds of the
   resource profile established for the requesting host.

   To prevent fraud and to ensure accurate billing, this document
   describes various scenarios and mechanisms that provide the linkage
   required to verify that the resources being used to provide a
   requested QoS are in-line with the media streams requested (and
   authorized) for the session.














Hamer, et al.                Informational
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