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I-D ACTION:draft-barnes-sipping-history-info-02.txt

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

	Title		: An Extension to the Session Initiation Protocol 
			  for Request History Information
	Author(s)	: M. Barnes, M. Watson
	Filename	: draft-barnes-sipping-history-info-02.txt
	Pages		: 20
	Date		: 2003-2-11
This draft defines a standard mechanism for capturing the history 
information associated with a SIP request.  This capability enables 
many enhanced services by providing the information as to how and 
why a call arrives at a specific application or user.  This draft 
defines a new optional SIP header, History-Info, for capturing the 
history information in requests. A new option tag, HistInfo, to be 
included in the Supported header is defined to allow UAs to 
indicate whether the HistInfo should be returned in responses to a 
request which has captured the history information.

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