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

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This draft is a work item of the Session Initiation Protocol Working Group of the IETF.

	Title		: SIP Extensions for Media Authorization
	Author(s)	: W. Marshall, F. Andreasen, D. Evans
	Filename	: draft-ietf-sip-call-auth-06.txt
	Pages		: 16
	Date		: 23-May-02
	
This document describes the need for QoS and media authorization and 
defines a 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.

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