I-D ACTION:draft-ietf-sipping-req-history-02.txt

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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Session Initiation Proposal Investigation Working Group of the IETF.

	Title		: SIP Generic Request History Capability û Requirements
	Author(s)	: M. Barnes, M. Watson, C. Jennings, J. Peterson
	Filename	: draft-ietf-sipping-req-history-02.txt
	Pages		: 11
	Date		: 2003-2-11
	
Many services that SIP is anticipated to support require the ability 
to determine why and how the call arrived at a specific application.  
Examples of such services include (but are not limited to) sessions 
initiated to call centers via 'click to talk' SIP URLs on a web page, 
'call history/logging' style services within intelligent 'call 
management' software for SIP UAs and calls to voicemail servers and 
call centers.  While SIP implicitly provides the redirect/retarget 
capabilities that enable calls to be routed to chosen applications, 
there is currently no standard mechanism within SIP for communicating 
the history of such a request. This 'request history' information 
allows the receiving application to determine hints about how and why 
the call arrived at the application/user.     
This draft discusses the motivations in support of a mechanism for 
recording the 'request history', and proposes detailed requirements 
for such a generic 'request history' capability.

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