Network Working Group M. Barnes
Internet-Draft Polycom
Obsoletes: 4244 (if approved) F. Audet
Intended status: Standards Track Skype
Expires: July 5, 2013 S. Schubert
NTT
J. van Elburg
Detecon International Gmbh
C. Holmberg
Ericsson
Jan 2013
An Extension to the Session Initiation Protocol (SIP) for Request
History Information
draft-ietf-sipcore-rfc4244bis-11.txt
Abstract
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
specification defines a value for the Privacy header field that
directs the anonymization of values in the History-Info header field.
This document obsoletes RFC 4244.
Status of this Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on July 5, 2013.
Barnes, et al. Expires July 5, 2013 [Page 1]
Internet-Draft History-Info Jan 2013
Copyright Notice
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Internet-Draft History-Info Jan 2013
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Conventions and Terminology . . . . . . . . . . . . . . . . . 4
3. Background . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5. History-Info Header Field Protocol Structure . . . . . . . . . 7
5.1. History-Info Header Field Example Scenario . . . . . . . . 10
6. User Agent Handling of the History-Info Header Field . . . . . 13
6.1. User Agent Client (UAC) Behavior . . . . . . . . . . . . . 13
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