NENAGeneric Standards forE9-1-1 PSAPEquipmentNENA Technical ReferenceNENA-04-001 Issue 1, June 20, 1996Generic Standards for E9-1-1 PSAP Equipment (Original)Prepared by:National Emergency Number Association (NENA) PSAP Standards Sub - CommitteePublished byNENAPrinted in U.S.A.
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`NENA-04-001Issue 1, June 20, 1996Generic Standards for E9-1-1PSAP Equipment (Original)IIINENA TECHNICAL REFERENCE NOTICEThis Technical Reference is published by National Emergency Number Association (NENA) as aguide and recommendation for the designers and manufacturers of customer-premise systems thatis used for the purpose of processing emergency calls at a PSAP. It is not intended to providecomplete design specifications or parameters nor to assure the quality of performance of suchequipment.NENA reserves the right to revise this Technical Reference for any reason including, but notlimited to, conformity with criteria or standards promulgated by various agencies, utilization ofadvances in the state of the technical arts or to reflect changes in the design of equipment orservices described therein.It is possible that certain advances in technology will precede these revisions. Therefore, thisTechnical Reference should not be the only source of information used to purchase the CustomerPremise Equipment (CPE). NENA members are advised to contact their Telephone Companyrepresentative to ensure CPE compatibility with the Telco network.The techniques or equipment characteristics disclosed herein may be covered by patents of someCorporations or others. No license expressed or implied is hereby granted. This document is notto be construed as a suggestion to any manufacturer to modify or change any of its products, nordoes this document represent any commitment by NENA or any affiliate thereof to purchase anyproduct whether or not it provides the described characteristics.This document has been prepared solely for the voluntary use of E9-1-1 service providers, E9-1-1equipment vendors, and participating telephone companies.By using this document, the user agrees that the NENA will have no liability for anyconsequential, incidental, special, or punitive damage that may result.This document has been developed by the NENA PSAP standards Sub - Committee. The NENAexecutive board has recommended this document for industry acceptance. Recommendations forchange to this document may be submitted to:National Emergency Number AssociationAttention: Executive Director110 South 6th StreetCoschocton, OH 43812
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`NENA-04-001Issue 1, June 20, 1996Generic Standards for E9-1-1PSAP Equipment (Original)IVAcknowledgments:This document has been developed by the NENA PSAP Standards Sub-Committee.The following industry experts and their companies are recognized for their contributions indevelopment of this document.Chair:Billy RagsdaleBellSouthMembers:Jim AlexanderNorthern TechnologiesBob BecklerSRXBill BernhardtNYNEXDaniel BiageCML Technologies Inc.Joe BrozovichAT&T / Lucent TechnologiesRalph CarnellPlant Equipment Inc.George CasparyPacific BellPierre CollCML Technologies Inc.Chris ConstanceNorthern TechnologiesDon CuozzoNYNEXRandy DalrympleOrbacom SystemsJohn DeLorenzoNYNEXGene DorlandSpectracomToni DunneTexas 9-1-1 CommissionTom EwingGTE WestRichard FryeOrbacom SystemsJay FullerPlant Equipment Inc.Larry HegleUS WestAlbert IsraelPositron Industries Inc.Andrew KendziorMotorola - SRXJohn LucasSprintGeorge MarousisPositron Industries Inc.Terry McLartyBellSouthTom MeeganSouth Western BellPat MoranNYNEXJoe MorrisBell AtlanticTom OffuttBell AtlanticTerry RyanTCIRandy RichmondZetronFred StrongAmeritechBob TildenPacific Bell
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`NENA-04-001Issue 1, June 20, 1996Generic Standards for E9-1-1PSAP Equipment (Original)VTABLE OF CONTENTS1. INTRODUCTION............................................................................................................................................11.1 GENERAL..........................................................................................................................................................11.2 PURPOSE AND SCOPE OF DOCUMENT..................................................................................................................11.3 ORGANIZATION OF DOCUMENT..........................................................................................................................11.4 DOCUMENT TERMINOLOGY...............................................................................................................................11.5 REASON FOR ISSUE............................................................................................................................................21.6 REASON FOR REISSUE........................................................................................................................................22. ENHANCED 9-1-1 - SYSTEM DESCRIPTION AND FEATURES DEFINITIONS.....................................22.1 E9-1-1 SYSTEM AND FEATURE OVERVIEW..........................................................................................................22.1.1 General Feature Assignments...................................................................................................................22.2 SELECTIVE ROUTING.........................................................................................................................................32.3 DEFAULT ROUTING...........................................................................................................................................32.4 ALTERNATE ROUTING.......................................................................................................................................32.5 CENTRAL OFFICE TRANSFER..............................................................................................................................32.5.1 Selective Transfer.....................................................................................................................................32.5.2 Fixed Transfer..........................................................................................................................................42.5.3 Manual Transfer.......................................................................................................................................42.6 AUTOMATIC NUMBER IDENTIFICATION (ANI).....................................................................................................42.6.1 7 Digit ANI...............................................................................................................................................42.6.2 10 Digit ANI.............................................................................................................................................42.7 AUTOMATIC LOCATION IDENTIFICATION (ALI)...................................................................................................42.8 FORCED DISCONNECT........................................................................................................................................52.9 NIGHT SERVICE.................................................................................................................................................53. PSAP INTERFACES.......................................................................................................................................63.1 TRUNK INTERFACE............................................................................................................................................63.1.1 E9-1-1 Tandem Trunk Connection to a PSAP...........................................................................................63.1.2 E9-1-1 End Office Trunk Connection to a PSAP (Direct Trunk)................................................................83.1.3 Network Tones..........................................................................................................................................93.2 CENTRAL OFFICE BASED E9-1-1 INTERFACE......................................................................................................93.3 ALI DATABASE INTERFACE...............................................................................................................................93.3.1 E9-1-1 Telco ALI Data Base Interface......................................................................................................93.3.1.1 Overview............................................................................................................................................................93.3.1.2 Physical............................................................................................................................................................103.3.1.3 Protocol............................................................................................................................................................103.3.1.4 ALI Requests....................................................................................................................................................113.3.1.5 Response to an ALI request..............................................................................................................................113.3.1.6 ‘ALI text’ message...........................................................................................................................................113.3.1.7 Heartbeat Messages..........................................................................................................................................123.3.2 Manual ALI Request...............................................................................................................................123.3.3 Premise ALI Database Interface.............................................................................................................123.4 COMPUTER AIDED DISPATCH (CAD) INTERFACE..............................................................................................133.4.1 Physical Interface...................................................................................................................................133.4.2 Electrical Interface.................................................................................................................................133.4.3 Serial Interface.......................................................................................................................................133.4.4 Protocol.................................................................................................................................................133.4.5 Messages Exchange................................................................................................................................143.4.6 ALI text message.....................................................................................................................................143.4.7 Heartbeat message.................................................................................................................................14
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`NENA-04-001Issue 1, June 20, 1996Generic Standards for E9-1-1PSAP Equipment (Original)VI3.4.8 Erase message........................................................................................................................................153.4.9 Flow control...........................................................................................................................................153.5 RECORDERS AND TELEPRINTERS INTERFACE.....................................................................................................153.5.1 Voice Recording Interface......................................................................................................................153.5.1.1 Overview..........................................................................................................................................................153.5.1.2 Logging and Recall Recorder Requirements......................................................................................................153.5.1.3 Recorder Start Signal........................................................................................................................................163.5.1.4 Electrical Interfaces..........................................................................................................................................163.5.2 Connections / Interface to Printers.........................................................................................................173.5.3 CDR (Call Detail Record) Printer Interface............................................................................................183.5.3.1 Physical Interface.............................................................................................................................................183.5.3.2 Electrical Interface............................................................................................................................................183.6 ANI DISPLAY INTERFACE................................................................................................................................183.7 ALI DISPLAY / INTERFACE..............................................................................................................................193.7.1 ALI Displays (Current)...........................................................................................................................193.7.1.1 Protocol/Format................................................................................................................................................193.7.1.2 ALI Display Requirements................................................................................................................................193.7.1.3 User Interface...................................................................................................................................................193.7.2 ALI Display / Interface (Future Enhancements)......................................................................................193.8 PSAP TIME SYNCHRONIZATION INTERFACE.....................................................................................................203.9 REMOTE DATA TRANSFER INTERFACE..............................................................................................................203.9.1 External Modem/Facsimile Machine Control..........................................................................................203.9.2 Modem/Facsimile Serial Interface..........................................................................................................203.9.3 Modem Protocol.....................................................................................................................................203.9.4 Facsimile Protocol.................................................................................................................................203.9.5 Modulation.............................................................................................................................................213.9.6 Flow Control..........................................................................................................................................213.10 1A2 KEY TELEPHONE SYSTEM INTERFACE.....................................................................................................213.11 TELEPHONE ANALOG AUDIO INTERFACE........................................................................................................213.11.1 Common Tip and Ring Interface (For Analog Telephone Sets)..............................................................213.11.1.1 Overview........................................................................................................................................................213.11.1.2 Operation.......................................................................................................................................................223.11.1.3 Telephone Set Requirements..........................................................................................................................223.11.1.4 Ancillary Device Requirements.......................................................................................................................223.11.1.5 Electrical Interfaces........................................................................................................................................223.11.2 Telephone Audio Interface (For Digital Telephone Sets).......................................................................233.11.2.1 Overview........................................................................................................................................................233.11.2.2 Operation.......................................................................................................................................................233.11.2.3 Telephone Set Requirements..........................................................................................................................233.11.2.4 Electrical Interfaces........................................................................................................................................233.11.2.5 Physical Interfaces..........................................................................................................................................243.12 RADIO/TELEPHONE HEADSET INTERFACE.......................................................................................................243.12.1 Overview..............................................................................................................................................243.12.2 Telephone Set Requirements.................................................................................................................243.12.3 Radio Console Requirements................................................................................................................253.12.4 Electrical Interfaces.............................................................................................................................253.12.4.1 Option 1:........................................................................................................................................................253.12.4.2 Option 2:........................................................................................................................................................253.12.5 Physical Interfaces...............................................................................................................................263.13 OFF-HOOK SIGNAL CONTACT PAIRS...............................................................................................................263.13.1 Overview..............................................................................................................................................263.13.2 Operation.............................................................................................................................................263.13.3 Electrical Interfaces.............................................................................................................................273.13.3.1 Off-hook Signal Contact Pair..........................................................................................................................273.13.3.2 Signal Pair......................................................................................................................................................273.13.4 Physical Interfaces...............................................................................................................................273.14 HANDSET/HEADSET INTERFACES....................................................................................................................27
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`NENA-04-001Issue 1, June 20, 1996Generic Standards for E9-1-1PSAP Equipment (Original)VII3.14.1 Overview..............................................................................................................................................273.14.2 Telephone Set Requirements.................................................................................................................273.14.3 Headset Requirements..........................................................................................................................283.14.4 Electrical Interfaces.............................................................................................................................283.14.5 Physical Interfaces...............................................................................................................................283.15 PBX / AUTOMATIC CALL DISTRIBUTION (ACD) INTERFACE...........................................................................293.16 PSAP ALARMS.............................................................................................................................................293.16.1 General................................................................................................................................................293.16.2 Operation.............................................................................................................................................293.16.3 Electrical Specifications.......................................................................................................................303.16.4 Remote Alarms.....................................................................................................................................303.16.5 Definitions............................................................................................................................................303.16.6 Alarm messages....................................................................................................................................303.17 TDD/TTY INTERFACE..................................................................................................................................303.17.1 Interconnection.....................................................................................................................................303.17.2 Signaling..............................................................................................................................................313.17.2.1 Baudot TDD/TTY.........................................................................................................................................313.17.2.2 ASCII (TDD/TTY)........................................................................................................................................313.17.2.3 ASCII (Computer Modems).........................................................................................................................313.17.3 Power...................................................................................................................................................314. CALL PROGRESS SIGNALS.......................................................................................................................314.1 CONNECTION TO AN E9-1-1 PSAP...................................................................................................................324.1.1 E9-1-1 PSAP To Tandem With 7 Digit ANI.............................................................................................324.1.2 E9-1-1 PSAP with 10 Digit ANI..............................................................................................................344.2 CALL DISCONNECT..........................................................................................................................................344.2.1 Disconnect for E9-1-1 Tandem Calls......................................................................................................344.2.2 E9-1-1 PSAP Central Office Transfer.....................................................................................................354.2.3 E9-1-1 Call Transfer Sequence...............................................................................................................354.2.3.1 Selective or Fixed Transfer............................................................................................................................354.2.3.2 Added Party Disconnect First........................................................................................................................364.2.3.3 Calling Party Disconnects First.....................................................................................................................364.3 PSAP REMOTE MAINTENANCE........................................................................................................................374.3.1 Remote Maintenance Features................................................................................................................374.3.2 Remote Maintenance Interface...............................................................................................................374.3.2.1 Dial Up............................................................................................................................................................374.3.2.2 Dedicated Line................................................................................................................................................384.3.3 Trunk Maintenance Test Calls................................................................................................................394.4 ADDRESS SIGNALING AND TRANSMISSION CHARACTERISTICS............................................................................394.4.1 Address Signaling...................................................................................................................................394.4.2 Transmission Characteristics..................................................................................................................395. PSAP FEATURE REQUIREMENT SPECIFICATIONS............................................................................405.1 ATTENDANT POSITION COMPATIBILITY............................................................................................................405.2 QUEUING OF 9-1-1 CALLS................................................................................................................................405.3 DISTINCTIVE RINGING.....................................................................................................................................405.4 RING BACK.....................................................................................................................................................405.5 HOLD FOR EMERGENCY CALLS (KEY TELEPHONE SYSTEMS).............................................................................405.5.1 Hold for Emergency Calls (ACD)..........................................................................................................405.6 HOOKFLASH....................................................................................................................................................405.7 AUDIO VOLUME ADJUSTMENT.........................................................................................................................415.8 THREE WAY CONFERENCING / TRANSFER.........................................................................................................415.9 SPEED DIAL....................................................................................................................................................415.10 LAST NUMBER REDIAL..................................................................................................................................415.11 TRUNK OR LINE ACCESS................................................................................................................................41
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`NENA-04-001Issue 1, June 20, 1996Generic Standards for E9-1-1PSAP Equipment (Original)VIII5.12 PUBLIC SWITCHED ACCESS LINE....................................................................................................................415.12.1 Voice....................................................................................................................................................415.12.2 Remote Data Transfer...........................................................................................................................415.13 PSAP LOGIN ID............................................................................................................................................415.14 PSAP STATUS INDICATORS...........................................................................................................................425.15 BARGE-IN.....................................................................................................................................................425.16 SILENT BARGE-IN (MONITOR).......................................................................................................................425.17 HEADSET/HANDSET COMPATIBILITY..............................................................................................................425.18 TDD/TTY COMPATIBILITY...........................................................................................................................425.18.1 Pre-Programmed Messages..................................................................................................................435.18.2 Detection Devices.................................................................................................................................435.19 MANAGEMENT INFORMATION SYSTEM...........................................................................................................436. POWER REQUIREMENTS.........................................................................................................................446.1 COMMERCIAL POWER......................................................................................................................................446.1.1 Common Power Line Problems...............................................................................................................446.1.1.1 Transients........................................................................................................................................................446.1.1.2 Surges..............................................................................................................................................................446.1.1.3 Sags.................................................................................................................................................................456.1.1.4 Noise................................................................................................................................................................456.1.1.5 Brownouts/Blackouts........................................................................................................................................456.1.1.6 Harmonic Distortion.........................................................................................................................................456.1.1.7 Summary..........................................................................................................................................................466.2 RESERVE POWER.............................................................................................................................................466.3 EMERGENCY POWER.......................................................................................................................................466.4 TRANSIENT VOLTAGE SURGE SUPPRESSION (TVSS)..........................................................................................476.4.1 TVSS for AC Power Circuits:..................................................................................................