Emergency Services for Internet Telephony Systems

Document Type Expired Internet-Draft (individual)
Authors Henning Schulzrinne  , Brian Rosen 
Last updated 2004-10-25
Stream (None)
Intended RFC status (None)
Expired & archived
pdf htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
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This Internet-Draft is no longer active.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


Summoning emergency help is a core feature of telephone networks. This document describes how the Session Initiation Protocol (SIP) can be used to provide advanced emergency services for voice-over-IP (VoIP). The architecture employs standard SIP features and requires no new protocol mechanisms. DNS is used to map civil and geospatial locations to the appropriate emergency call center.


Henning Schulzrinne (hgs+geopriv@cs.columbia.edu)
Brian Rosen (brian.rosen@marconi.com)

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