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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 [email protected]
QUESTIONS?
Lucien JonesOklahoma City Public Safety
Communications [email protected]