A new Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Session Initiation Protocol Core Working Group of the IETF.
Title : An Extension to the Session Initiation Protocol (SIP) for Request History Information
Author(s) : M. Barnes, et al
Filename : draft-ietf-sipcore-rfc4244bis-04.txt
Pages : 32
Date : 2011-03-15
This document defines a standard mechanism for capturing the history
information associated with a Session Initiation Protocol (SIP)
request. This capability enables many enhanced services by providing
the information as to how and why a SIP request arrives at a specific
application or user. This document defines an optional SIP header
field, History-Info, for capturing the history information in
requests. The document also defines SIP header field parameters for
the History-Info and Contact header fields to tag the method by which
the target of a request is determined. In addition, this document
defines a value for the Privacy header field specific to the History-
Info header field.
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http://www.ietf.org/internet-drafts/draft-ietf-sipcore-rfc4244bis-04.txt
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