NENA Functional and Interface Standards for Next Generation 9-1-1 Version 1.0 (I3)
Total Page:16
File Type:pdf, Size:1020Kb
NENA Functional and Interface Standards for Next Generation 9-1-1 Version 1.0 (i3) NENA Functional and Interface Standards for Next Generation 9-1-1 Version 1.0 (i3) NENA 08-002, Version 1.0, December 18, 2007 Prepared by: National Emergency Number Association (NENA) Technical Committee Chairs Published by NENA Printed in USA NENA Functional and Interface Standards for Next Generation 9-1-1 Version 1.0 (i3) NENA 08-002 Version 1.0, December 18, 2007 NENA TECHNICAL STANDARD DOCUMENT NOTICE The National Emergency Number Association (NENA) publishes this document as a guide for the designers and manufacturers of systems to utilize for the purpose of processing emergency calls. It is not intended to provide complete design specifications or to assure the quality of performance of such equipment. NENA reserves the right to revise this NENA TECHNICAL STANDARD DOCUMENT (TSD) for any reason including, but not limited to: conformity with criteria or standards promulgated by various agencies utilization of advances in the state of the technical arts or to reflect changes in the design of equipment or services described herein. It is possible that certain advances in technology will precede these revisions. Therefore, this NENA TSD should not be the only source of information used. NENA recommends that readers contact their Telecommunications Carrier representative to ensure compatibility with the 9-1-1 network. Patents may cover the specifications, techniques, or network interface/system characteristics disclosed herein. No license expressed or implied is hereby granted. This document shall not be construed as a suggestion to any manufacturer to modify or change any of its products, nor does this document represent any commitment by NENA or any affiliate thereof to purchase any product whether or not it provides the described characteristics. This document has been prepared solely for the use of E9-1-1 Service System Providers, network interface and system vendors, participating telephone companies, etc. By using this document, the user agrees that NENA will have no liability for any consequential, incidental, special, or punitive damages arising from use of the document. NENA‟s Technical Committee has developed this document. Recommendations for change to this document may be submitted to: National Emergency Number Association 4350 N Fairfax Dr, Suite 750 Arlington, VA 22203-1695 800-332-3911 or: [email protected] Version 1.0 December 18, 2007 Page 2 of 121 NENA Functional and Interface Standards for Next Generation 9-1-1 Version 1.0 (i3) NENA 08-002 Version 1.0, December 18, 2007 Acknowledgments: This document has been developed by the National Emergency Number Association (NENA) VoIP/Packet Technical Committee Long Term Definition Working Group. NENA recognizes the following industry experts and their companies for their contributions in development of this document. In addition, a larger number of work group members monitored the development of the document and commented occasionally on its contents. Members: Company Brian Rosen –Work Group Leader and NeuStar Technical Editor Nate Wilcox – VoIP/Packet Technical microDATA Chair Nadine B Abbott Telcordia Anand Akundi Telcordia Wayne Ballantyne Motorola Deborah Barclay Alcatel Lucent Marc Berryman Greater Harris County Tom Breen AT&T Guy Caron Bell Canada Pierre Desjardins Positron Brian Dupras Intrado Marc Linsner Cisco Roger Marshall TeleCommunication Systems, (TCS) Patty McCalmont Intrado Theresa Reese Telcordia Guy Roe Mapinfo Robert Sherry Intrado Version 1.0 December 18, 2007 Page 3 of 121 NENA Functional and Interface Standards for Next Generation 9-1-1 Version 1.0 (i3) NENA 08-002 Version 1.0, December 18, 2007 TABLE OF CONTENTS 1 EXECUTIVE OVERVIEW ............................................................................................................................... 8 2 INTRODUCTION .............................................................................................................................................. 9 2.1 OPERATIONAL IMPACTS SUMMARY .................................................................................................................. 9 2.2 DOCUMENT TERMINOLOGY .............................................................................................................................. 9 2.3 REASON FOR ISSUE/REISSUE ............................................................................................................................ 9 2.4 DATE COMPLIANCE ........................................................................................................................................ 10 2.5 ANTICIPATED TIMELINE ................................................................................................................................. 10 2.6 COSTS FACTORS ............................................................................................................................................. 10 2.7 COST RECOVERY CONSIDERATIONS ............................................................................................................... 10 2.8 ACRONYMS/ABBREVIATIONS/DEFINITIONS .................................................................................................... 11 2.9 INTELLECTUAL PROPERTY RIGHTS POLICY .................................................................................................... 14 3 TECHNICAL DESCRIPTION ....................................................................................................................... 15 3.1 SCOPE ............................................................................................................................................................ 17 4 ARCHITECTURE ........................................................................................................................................... 18 4.1 SYSTEM ARCHITECTURE ................................................................................................................................ 18 4.1.1 Assumptions .............................................................................................................................................. 18 4.1.2 Functional architecture ............................................................................................................................ 20 4.1.3 Example of possible physical architecture ............................................................................................... 24 4.1.4 Example Physical Architecture................................................................................................................. 25 4.1.5 Call Architecture ...................................................................................................................................... 26 4.1.5.1 Calls and Incidents .......................................................................................................................................... 26 4.2 RELATIONSHIP OF NENA I3 TO IETF STANDARDS ......................................................................................... 28 4.2.1 Location .................................................................................................................................................... 28 4.2.1.1 Location-by-Value (LbyV) ................................................................................................................... 30 4.2.1.2 Location-by-Reference (LbyR) ............................................................................................................. 30 4.2.2 Call Signaling ........................................................................................................................................... 30 4.2.3 Distinguishing an Emergency Call ........................................................................................................... 32 4.2.4 Routing of IP-based Emergency Calls in a generic IETF SIP originating network ................................. 33 4.2.5 Generic SIP as an Emergency Services IP Network ................................................................................. 35 4.2.5.1 Simple ESInet ................................................................................................................................................. 35 4.2.5.2 Multiple ESRPs in an ESInet Architecture ..................................................................................................... 36 4.2.5.3 Hierarchical ESInet Architectures – “Network of Networks” ......................................................................... 37 4.2.5.4 Internal ESRP functions .................................................................................................................................. 38 4.2.6 End to End generic SIP emergency call architecture ............................................................................... 39 4.3 RELATIONSHIP OF NENA I3 TO IMS STANDARDS WITHIN 3GPP .................................................................... 40 4.3.1 3GPP Functional Entities ......................................................................................................................... 40 4.3.2 Additional Functional Entities in Support of an IMS-based ESInet ......................................................... 41 4.3.3 Emergency Call Routing in an IMS origination network ......................................................................... 42 4.3.4 IMS as an Emergency Services IP Network .............................................................................................