SIP Caller Preferences and Callee Capabilities

Document Type Expired Internet-Draft (mmusic WG)
Authors Jonathan Rosenberg  , Henning Schulzrinne 
Last updated 1999-03-19
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active.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 a set of extensions to SIP which allow a caller to express preferences about request handling in servers. It also extends the SIP Contact header to allow users to describe their communications capabilities and characteristics.


Jonathan Rosenberg (
Henning Schulzrinne (

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