Requirements, Terminology and Framework for Exigent Communications

Document Type Expired Internet-Draft (atoca WG)
Authors Henning Schulzrinne  , Steve Norreys  , Brian Rosen  , Hannes Tschofenig 
Last updated 2012-09-13 (latest revision 2012-03-12)
Replaces draft-schulzrinne-atoca-requirements
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This Internet-Draft is no longer active.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


Before, during and after emergency situations various agencies need to provide information to a group of persons or to the public within a geographical area. While many aspects of such systems are specific to national or local jurisdictions, emergencies span such boundaries and notifications need to reach visitors from other jurisdictions. This document provides terminology, requirements and an architectural description for protocols exchanging alerts between IP-based end points.


Henning Schulzrinne (
Steve Norreys (
Brian Rosen (
Hannes Tschofenig (

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