The SIP Session Timer

Status: SIP WG Work Item, draft 15, in IESG review
Date of last update: July 18, 2004
Authors: S. Donovan, J. Rosenberg
Current Document: draft-ietf-sip-session-timer-15 [.txt]
Summary: 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 if 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.
Archive of older drafts:
  1. draft-ietf-sip-session-timer-14 [.txt], February 14, 2004
  2. draft-ietf-sip-session-timer-13 [.txt][.html], January 12, 2004
  3. SIP WG draft -11, July 1, 2003
  4. SIP WG draft -10, November 4, 2002
  5. SIP WG draft -09, July 1, 2002
  6. SIP WG draft -08, October 6, 2001
  7. SIP WG draft -07, October 1, 2001
  8. SIP WG draft -06, August 24, 2001
  9. SIP WG draft -05, July 20, 2001
  10. SIP WG draft -04, November 22, 2000
  11. SIP WG draft -03, October 29,2000
  12. SIP WG draft -02, July 15, 2000
  13. SIP WG draft -01, March 9, 2000
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