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Referencing Earlier Communications in SIP Requests

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Kumiko Ono , Henning Schulzrinne
Last updated 2009-10-12
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document defines a SIP header extension that refers to earlier SIP or non-SIP communication in SIP requests. For example, this extension allows users to correlate a SIP session with earlier sessions or email exchanges.


Kumiko Ono
Henning Schulzrinne

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)