I-D ACTION:draft-andreasen-sipping-rfc3603bis-00.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories.

	Title		: Private Session Initiation Protocol (SIP) 
                          Proxy-to-Proxy Extensions for Supporting the
                          PacketCable Distributed Call Signaling 
                          Architecture 
	Author(s)	: F. Andreasen, et al.
	Filename	: draft-andreasen-sipping-rfc3603bis-00.txt
	Pages		: 31
	Date		: 2006-6-20

In order to deploy a residential telephone service at very large 
scale across different domains, it is necessary for trusted elements 
owned by different service providers to exchange trusted information 
that conveys customer-specific information and expectations about the 
parties involved in the call.  This document describes private 
extensions to the Session Initiation Protocol (SIP) (RFC3261) for 
supporting the exchange of customer information and billing 
information between trusted entities in the PacketCable Distributed 
Call Signaling Architecture.  These extensions provide mechanisms for 
access network coordination to prevent theft of service, customer 
originated trace of harassing calls, support for operator services 
and emergency services, and support for various other regulatory 
issues.  The use of the extensions is only applicable within closed 
administrative domains, or among federations of administrative 
domains with previously agreed-upon policies where coordination of 
charging and other functions is required. 

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