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IANA Registering a SIP Resource Priority Header Field Namespace for Local Emergency Communications
draft-polk-local-emergency-rph-namespace-05

Document type: Active Internet-Draft (individual in rai area)
Document stream: IETF
Last updated: 2013-02-27 (latest revision 2013-02-23)
Intended RFC status: Informational
Other versions: plain text, pdf, html

IETF State: (None)
Consensus: Unknown
Document shepherd: No shepherd assigned

IESG State: RFC Ed Queue
RFC Editor State: AUTH48
Responsible AD: Robert Sparks
Send notices to: jmpolk@cisco.com, draft-polk-local-emergency-rph-namespace@tools.ietf.org, Brian.Rosen@neustar.biz

Network Working Group                                            J. Polk
Internet-Draft                                             Cisco Systems
Intended status: Informational                         February 22, 2013
Expires: August 26, 2013

  IANA Registering a SIP Resource Priority Header Field Namespace for
                     Local Emergency Communications
            draft-polk-local-emergency-rph-namespace-05.txt

Abstract

   This document creates the new Session Initiation Protocol (SIP)
   Resource Priority header field namespace 'esnet' for local emergency
   session establishment to a public safety answering point (PSAP),
   between PSAPs, and between a PSAP and first responders and their
   organizations, and places this namespace in the IANA registry.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 26, 2013.

Copyright Notice

   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as

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Internet-Draft           Emergency RPH Namespace           February 2013

   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Rules of Usage of the Resource Priority Header field . . . . .  4
   3.  "esnet" Namespace Definition . . . . . . . . . . . . . . . . .  7
     3.1.  Namespace Definition Rules and Guidelines  . . . . . . . .  7
     3.2.  The 'esnet' Namespace  . . . . . . . . . . . . . . . . . .  7
   4.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  8
     4.1.  IANA Resource-Priority Namespace Registration  . . . . . .  8
     4.2.  IANA Priority-Value Registrations  . . . . . . . . . . . .  8
   5.  Security Considerations  . . . . . . . . . . . . . . . . . . .  8
   6.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . .  9
   7.  Normative References . . . . . . . . . . . . . . . . . . . . .  9
   Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 10

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Internet-Draft           Emergency RPH Namespace           February 2013

1.  Introduction

   This document creates the new Session Initiation Protocol (SIP)
   Resource Priority header (RPH) field namespace 'esnet' for local
   emergency usage and places this namespace in the IANA registry.  The
   SIP Resource-Priority header field is defined in RFC 4412 [RFC4412].
   The new 'esnet' namespace is to be used for inbound calls towards a
   public safety answering point (PSAP), between PSAPs, and between a
   PSAP and first responders or their organizations within managed IP
   networks.  This namespace is not for use on the open public Internet
   because it can be trivially forged.

   Adding a RPH with the 'esnet' namespace can be differentiated from
   the marking of an emergency call using a service urn as defined in
   RFC 5031 in that the RPH specifically requests preferential treatment
   in networks which honor it, while the marking merely identifies an
   emergency call without necessarily affecting resources allocated to
   it.  It is appropriate to use both where applicable.  RPH with
   'esnet' may also be used within public safety networks for SIP
   sessions that are not emergency calls and thus not marked per RFC
   5031.

   This new namespace is included in SIP requests to provide an explicit
   priority indication within controlled environments, such as an IMS
   infrastructure or Emergency Services network (ESInet) where misuse
   can be reduced to an acceptable level because these types of networks

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