Private Header (P-Header) Extensions to the Session Initiation Protocol (SIP) for support of Indication of Dialog Type

Document Type Expired Internet-Draft (individual)
Last updated 2013-02-17 (latest revision 2012-08-16)
Stream (None)
Intended RFC status (None)
Expired & archived
plain text pdf html bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes private extensions to the Session Initiation Protocol (SIP) that enable a SIP entity to indicate in the INVITE message the exact purpose of the INVITE transaction, e.g. media negotiation, session refresh or creation of an pure signaling dialog.


Yue Song (
Yi Jiang (

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