Extensions to the Emergency Services Architecture for Dealing With Unauthenticated and Unauthorized Devices
RFC 7406
Internet Engineering Task Force (IETF) H. Schulzrinne
Request for Comments: 7406 Columbia University
Category: Informational S. McCann
ISSN: 2070-1721 BlackBerry Ltd
G. Bajko
MediaTek
H. Tschofenig
D. Kroeselberg
Siemens Corporate Technology
December 2014
Extensions to the Emergency Services Architecture for Dealing With
Unauthenticated and Unauthorized Devices
Abstract
This document provides a problem statement, introduces terminology,
and describes an extension for the base IETF emergency services
architecture to address cases where an emergency caller is not
authenticated, has no identifiable service provider, or has no
remaining credit with which to pay for access to the network.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Not all documents
approved by the IESG are a candidate for any level of Internet
Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc7406.
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RFC 7406 Unauthenticated Emergency Service December 2014
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Copyright (c) 2014 IETF Trust and the persons identified as the
document authors. All rights reserved.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Use-Case Categories . . . . . . . . . . . . . . . . . . . . . 5
4. ZBP Considerations . . . . . . . . . . . . . . . . . . . . . 12
5. NASP Considerations . . . . . . . . . . . . . . . . . . . . . 12
5.1. End-Host Profile . . . . . . . . . . . . . . . . . . . . 15
5.1.1. LoST Server Discovery . . . . . . . . . . . . . . . . 15
5.1.2. ESRP Discovery . . . . . . . . . . . . . . . . . . . 15
5.1.3. Location Determination and Location Configuration . . 15
5.1.4. Emergency Call Identification . . . . . . . . . . . . 15
5.1.5. SIP Emergency Call Signaling . . . . . . . . . . . . 15
5.1.6. Media . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1.7. Testing . . . . . . . . . . . . . . . . . . . . . . . 16
5.2. IAP/ISP Profile . . . . . . . . . . . . . . . . . . . . . 16
5.2.1. ESRP Discovery . . . . . . . . . . . . . . . . . . . 16
5.2.2. Location Determination and Location Configuration . . 16
5.3. ESRP Profile . . . . . . . . . . . . . . . . . . . . . . 16
5.3.1. Emergency Call Routing . . . . . . . . . . . . . . . 16
5.3.2. Emergency Call Identification . . . . . . . . . . . . 16
5.3.3. SIP Emergency Call Signaling . . . . . . . . . . . . 17
6. Lower-Layer Considerations for NAA Case . . . . . . . . . . . 17
6.1. Link-Layer Emergency Indication . . . . . . . . . . . . . 18
6.2. Securing Network Attachment in NAA Cases . . . . . . . . 19
7. Security Considerations . . . . . . . . . . . . . . . . . . . 20
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.1. Normative References . . . . . . . . . . . . . . . . . . 21
8.2. Informative References . . . . . . . . . . . . . . . . . 22
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 24
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 25
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