Mandating SIP Extension Support by Servers

Status: Integrated into draft-ietf-sip-rfc2543bis-05 by IESG request. This draft will no longer continue to exist as an independent entity.
Date of last update: July 20, 2001
Authors: J. Rosenberg, H. Schulzrinne
Current Document: draft-ietf-sip-serverfeatures-05.txt
Summary: The Session Initiation Protocol (SIP) provides a mechanism that allows a client to request that a particular protocol extension be used to process the request. The server declines the request if it does not support the extension. However, there is currently no way for a server to determine which extensions are supported by the client. Knowing about client-supported extensions allows the server to tailor its response accordingly. Furthermore, SIP does not define a way for a client to query a server about the extensions it supports. This document defines a SIP extension that allows clients to indicate, in a request, the set of extensions supported. We also define a mechanism that allows clients, through an OPTIONS request, to determine the extensions supported by a server.
Archive of older drafts:
  1. SIP WG draft -04, February 25, 2001
  2. SIP WG draft -03, February 18, 2001
  3. SIP WG draft -02, March 2000
  4. SIP WG draft -01, Feb. 2000
  5. SIP WG draft -00, Jan. 2000

Back to IETF Documents