Session Initiation Protocol (SIP) Session Timer Glare Handling

Document Type Replaced Internet-Draft (individual)
Author Christer Holmberg 
Last updated 2018-04-19 (latest revision 2017-09-13)
Replaced by draft-ietf-sipcore-sessiontimer-race
Stream (None)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-sipcore-sessiontimer-race
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This Internet-Draft is no longer active.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 updates RFC 4028, by clarifying the procedures for negotiating usage of the Session Initiation Protocol (SIP) session timer mechansim, in order to avoid a race condition where both endpoints trigger simultaneous negotiations.


Christer Holmberg (

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