I-D ACTION:draft-ietf-sip-history-info-02.txt

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

	Title		: An Extension to the Session Initiation Protocol for Request History Information
	Author(s)	: M. Barnes
	Filename	: draft-ietf-sip-history-info-02.txt
	Pages		: 32
	Date		: 2004-2-18
	
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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