Reference document

Org
IETF
Pubnum
RFC 4028
Date
2005-04
Version
Title
Session Timers in the Session Initiation Protocol (SIP)

Applicability

This document defines an extension to the Session Initiation Protocol (SIP). This extension allows for a periodic refresh of SIP sessions through a re-INVITE or UPDATE request. The refresh allows both user agents and proxies to determine whether the SIP session is still active. The extension defines two new header fields Session-Expires, which conveys the lifetime of the session, and Min-SE, which conveys the minimum allowed value for the session timer.

Responsible Party

Name
FMN CPWG

Status

URI
https://www.ietf.org/rfc/rfc4028.txt

History

Flag Date RFC Version
added 2012-09-02 6-23 7.0
changed 2017-01-14 9-17 10.0
UUID
d73751ff-cb01-4f93-94b5-af04e88c35d1

Relationships

This standard is used by the following service profiles: