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[Sip] I-D ACTION:draft-ietf-sip-call-auth-04.txt



A New Internet-Draft is available from the on-line Internet-Drafts directories.
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 et al.
	Filename	: draft-ietf-sip-call-auth-04.txt
	Pages		: 14
	Date		: 06-Mar-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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