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9-1-1 and VoIP Where are you calling from?

9-1-1 and VoIP Where are you calling from?. InfraGard Conference April 2, 2008. Agenda. The Old Days 911 Call Routing Wireline Calls Phase I Wireless Phase II Wireless VoIP Current Status Future Routing Issues. Voice Telephone Network Overview Traditional Residential/Business Calls.

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9-1-1 and VoIP Where are you calling from?

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  1. 9-1-1 and VoIPWhere are you calling from? InfraGard Conference April 2, 2008

  2. Agenda The Old Days 911 Call Routing Wireline Calls Phase I Wireless Phase II Wireless VoIP Current Status Future Routing Issues

  3. Voice Telephone Network OverviewTraditional Residential/Business Calls Public Switched Telephone Network Residential “Local Tandem” Office Local Central Office (“End Office”) Local Central Office (“End Office”) Business Other End Offices)

  4. Voice Telephone Network OverviewTraditional Long Distance Call Routing IXC’s POP IXC’s POP IXC’s Network Residential Local Central Office (“End Office”) Toll Tandem Office Toll Tandem Office Local Central Office (“End Office”) CITY B CITY A Business

  5. Wireless E911Phase I Route the call to the right PSAP Provide the callback number

  6. ANI – Automatic Number Identification“Pseudo ANI” –A phone number used only for the duration of the call to route the call to the PSAP.…also called an “ESRK”Emergency Service Routing Key

  7. Phase II Route the call to the right PSAP Provide the callback number Provide Lat/Long Location Within: Network, 100 meters 67% 300 meters 95% Handset, 50 meters 67% 150 meters 95% “Confidence Factor” Estimate

  8. VoIP Home and • Small Business Phones • Dial like a phone • Quack like a phone • Replace a phone • Generate calls for help like a phone • Pose problems for E9-1-1 agencies • Would drain public safety revenue

  9. VoIP CONCERNS • Misroutes from Corporate Systems • Misroutes from VoIP Providers • VoIP calls to 10-digit admin. number • Non-compliance with E9-1-1 routing • Non-compliance with 9-1-1 fees • Federal policy – New Ruling

  10. 3rdPARTY

  11. 911 SR PSAP SR DB ALI DB VPC VPC VPC LIS MPC MPC MPC ERDB VDB The “i2” 9-1-1 Network LEC CLEC Wireless PDE ESGW Call Server VoIP End Point

  12. VDB Two New databases Will Emulate functions performed by landline 9-1-1 databases • 1. VDB: Validation Database • Used when subscriber registers address • Civic, Postal to • MSAG valid address

  13. ERDB Two New databases 2. ERDB: Emergency Routing Database • Used during 9-1-1 call to determine routing • Provides routing instructions based on location • Identifies the specific ESZ for the location • Provides MSAG valid address

  14. NENA NG9-1-1 Architecture March 2007

  15. QUESTIONS?Lucien JonesOklahoma City Public Safety Communications Centerlucien.jones@okc.gov

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