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

9-1-1 and VoIPWhere are you calling from?

9-1-1 and VoIPWhere are you calling from?

InfraGard Conference

April 2, 2008

InfraGard Conference

April 2, 2008

22

Agenda Agenda

The Old Days911 Call Routing

Wireline CallsPhase I Wireless Phase II WirelessVoIP Current Status

Future Routing Issues

The Old Days911 Call Routing

Wireline CallsPhase I Wireless Phase II WirelessVoIP Current Status

Future Routing Issues

44

Voice Telephone Network OverviewTraditional Residential/Business Calls

Voice Telephone Network OverviewTraditional Residential/Business Calls

ResidentialResidentialResidentialResidential

LocalLocalCentral OfficeCentral Office(“End Office”)(“End Office”)

LocalLocalCentral OfficeCentral Office(“End Office”)(“End Office”)

BusinessBusinessBusinessBusiness

Public Switched Telephone NetworkPublic Switched Telephone NetworkPublic Switched Telephone NetworkPublic Switched Telephone Network

LocalLocalCentral OfficeCentral Office(“End Office”)(“End Office”)

LocalLocalCentral OfficeCentral Office(“End Office”)(“End Office”)

Other End Offices)Other End Offices)Other End Offices)Other End Offices)

“Local Tandem”Office

“Local Tandem”Office

55

ResidentialResidentialResidentialResidential

TollTandemOffice

TollTandemOffice

BusinessBusinessBusinessBusiness

IXC’sIXC’sPOPPOPIXC’sIXC’sPOPPOP

IXC’sIXC’sPOPPOPIXC’sIXC’sPOPPOP

TollTandemOffice

TollTandemOffice

Voice Telephone Network OverviewTraditional Long Distance Call Routing

Voice Telephone Network OverviewTraditional Long Distance Call Routing

LocalLocalCentral OfficeCentral Office(“End Office”)(“End Office”)

LocalLocalCentral OfficeCentral Office(“End Office”)(“End Office”)

CITY ACITY A CITY BCITY B

IXC’sIXC’sNetworkNetwork

IXC’sIXC’sNetworkNetwork

LocalLocalCentral OfficeCentral Office(“End Office”)(“End Office”)

LocalLocalCentral OfficeCentral Office(“End Office”)(“End Office”)

66

E911Tandem

"SelectiveRouter"

ALISASR ESNs

& ALI

OtherPSAPs

OKCPSAP

DBMS

EndOffice

SBC's E911 SystemWireline End-Office Portion

API Link

PSAP

Trunks

PSAPTrunks

SS7 911Trunks

Current E911 Network Overview

6/17/05 Lucien

EndOffice SS7 911

Trunks

May be CLEC ("facilities based")

Home orBusiness

Phone Line

Home orBusiness

Phone Line

77

E911Tandem

"SelectiveRouter"

ALISASR ESNs

& ALI

OtherPSAPs

OKCPSAP

DBMS

SBC's E911 SystemWireline End-Office Portion

API Link

PSAP

Trunks

PSAPTrunks

Current E911 Network Overview

6/17/05 Lucien

EndOffice

SS7 911Trunks

Business with PBX

Phones

PBX Stations"Extensions"

Phones

PBX

88

VoIP Enabled PBX

NETWORK: LAN / WAN

"TRUNKS"

PBX

Traditional Sets

LOCAL CENTRAL OFFICE

IPCard

ROUTER

Ethernet

ROUTER

PCs and ServersIP Phones

99

Voice Server(s)

VoIP based Switch

NETWORK: LAN / WAN

"TRUNKS"

LOCAL CENTRAL OFFICEEthernet

ROUTER

PCs and ServersIP Phones

Gateway/Router

IP Phones

1010

Voice Server(s)

VoIP Switch w/Remote Gateway

NETWORKLAN / WAN

"TRUNKS"

RemoteCentralOffice

Ethernet

ROUTER

PCs and Servers

Remote IP Phone& PC(s)

Gateway/Router

IP Phones

Local Trunksfor Local Calls

WAN Link

WAN LinkGateway/

Router

1111

Internet

Voice Server(s)

Off-prem' VoIP Phone Access

NETWORK: LAN / WAN

"TRUNKS"

LOCAL CENTRAL OFFICEEthernet

ROUTER

PCs and Servers

Laptop withphone software

Gateway/Router

IP Phones

Firewall

1212

E911Tandem

"SelectiveRouter"

ALISASR ESNs

& ALI

OtherPSAPs

OKCPSAP

DBMS

EndOffice

SBC's E911 SystemWireline End-Office Portion

API Link

PSAP

Trunks

PSAPTrunks

SS7 911Trunks

Current E911 Network Overview

6/17/05 Lucien

EndOffice SS7 911

Trunks

May be CLEC ("facilities based")

Home orBusiness

Phone Line

Home orBusiness

Phone Line

1313

1414

1515

ALISASR ESNs

& ALI

PSAP1

PSAP2

DBMS

EndOffice

SBC's E911 SystemOld Wireless 911 Example

API Link

PSAP

Trunks

PSAPTrunks

SS7 911Trunks

E911 Network Overview

6/17/05 Lucien

Trunks toTandem

MobileSubscriberdials 911

Home orBusiness

Phone Line

MSC

MS

Cell tower

Cell tower

E911Tandem

"SelectiveRouter"

Wireless E911Phase I

Wireless E911Phase I

Route the call to the right PSAP Provide the callback number

Route the call to the right PSAP Provide the callback number

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

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

1818

1919

E911Tandem

1

ALISASR ESNs

& ALI

PSAP1

PSAP2

DBMS

MSC

Third-PartyALI DB

CRDB/MPC

MS

PDE

Cell tower

SBC's ResponsibilityWireless Carrier's Responsibility

API Link

PSAPTrunks

PSAPTrunks

E2+

E2

SS7 911Trunks

Wireless E911 Network

E2+E2

2/18/03 Lucien

ALISteering

Phase II 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

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

2121

E911Tandem

1

ALISASR ESNs

& ALI

PSAP1

PSAP2

DBMS

MSC

Third-PartyALI DB

CRDB/MPC

MS

PDE

Cell tower

SBC's ResponsibilityWireless Carrier's Responsibility

API Link

PSAPTrunks

PSAPTrunks

E2+

E2

SS7 911Trunks

Wireless E911 Network

E2+E2

2/18/03 Lucien

ALISteering

2222

LocalTandem

EndOffice

VoIPProvider'sServer(s)

Regular Calls from VoIP Service Provider

8/18/04 Lucien

EndOffice

Laptop withphone software

GATE-WAY

Internetor

PrivateIP Network

IP Phone EndOffice

EndOffice

2323

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

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

2424

E911Tandem

"SelectiveRouter"

ALISASR ESNs

& ALI

PSAP1

PSAP2

DBMS

VoIPProvider'sServer(s)

Local E911 System

API Link

PSAP

Trunks

PSAPTrunks

9-1-1 Call from VoIP Customerconverted to 10-digit call

8/18/04 Lucien

EndOffice SS7 911

Trunks

GATE-WAY

Internetor

PrivateIP Network

IP Phone

LocalTandem

PSAP#sEnd

Office

Admin. Phone

2525

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

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

2626

E911Tandem

"SelectiveRouter"

ALISASR ESNs

& ALI

PSAP1

PSAP2

DBMS

VoIPProvider'sServer(s)

Local E911 System

API Link

PSAP

Trunks

PSAPTrunks

E9-1-1 Call from VoIP ServiceProvider with 9-1-1 Trunks

8/18/04 Lucien

EndOffice SS7 911

Trunks

GATE-WAY

Internetor

PrivateIP Network

IP Phone

GATE-WAY

SS7 911Trunks

3rd

PARTY

2727

E911Tandem

ALISASR ESNs

& ALI

PSAP1

PSAP2

DBMS

VSP

VPC

AT&T's ResponsibilityVoIP Carrier's Responsibility

API Link

PSAPTrunks

E2+

E2

SS7 911Trunks

E911 Network Overview

4/1/08 Lucien

ALISteering

IP Phone

IP NetworkESGW

PSAPTrunks

Third-PartyRouting &

ALI DB

2828

SRDB

The “i2” 9-1-1 Network

CLEC

LEC

Wireless

ESGW

VoIP End Point

Call Server

VPC

ALIDB

VPCVPC

MPC

MPC

MPC

PSAP

911 SR

VDB

ERDB

LIS

PDE

2929

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

VDB

3030

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

ERDB

3131

NENA NG9-1-1 ArchitectureNENA NG9-1-1 Architecture

March 2007

QUESTIONS?

Lucien JonesOklahoma City Public Safety

Communications Centerlucien.jones@okc.gov

QUESTIONS?

Lucien JonesOklahoma City Public Safety

Communications Centerlucien.jones@okc.gov