lng for ng 9-1-1/ ng 1-1-2 realization of ietf standards for the operational use in a legacy network...
TRANSCRIPT
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LNG for
NG 9-1-1/ NG 1-1-2 Realization of IETF Standards
for the operational usein a Legacy Network Gateway
forNext Generation Emergency Communication Centers
Gregor Jänin, ENP
5/13/10
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Background
• Work being done:• Detailed Functional and Interface Specification
for the NENAi3 Solution- Stage3 (Chapter 7) based on ideas from Theresa Reese (Telcordia)• Plans towards pure IP systems, and the truth
• Studies for a master thesis• requests from the PSAP’s• need of a LNG as COTS product
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Big Picture
Wireless/IPClient
DNS
Public WebServices
Wireless/CSClient
LISsMultimediaServices
OriginatingESRP
OriginatingBorder Control
Location ValidationWeb Interface
ESInetGlobal Internet,
Private Networks or IMS
Public AccessIP NetworksSIP/H.323
clients
IM Clients
Legacy PSAP/Emergency Responders
CSPCall Server
GovernmentServices
SupplementalServices
Databases
NG9-1-1 (i3) PSAP
ESInet
Access Networks Origination Networks Emergency Services IP Network (ESInet) Domains
TerminatingESRP
TerminatingBorder Control
Clients
Legacy Circuit-Switched Networks
PSTN client
Legacy PSAPGateway
E-CSCF(IMS)
LegacyNetworkGateway
ECRWeb
Interfaces
Private WebServices
NG9-1-1 (i3) PSAP
Emergency Call Routing &Location Validation
Databases
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“NG-911” at the moment
IP Network of Telecoms
(VoIP)
PSAPIP Network
(VoIP)
pure wire
circuit switchedconnection
ANI/ALIrequest
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ESInet, what’s the right way
connection to telecom’sStandard
PSTN 2 VoIP Gateway
?
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Gateway overview
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placing a Gateway now
• using a standard PSTN 2 VoIP gateway
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Job of a LNG
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Discovering & Calling a PSAP with ECRIT
ClientLoST
Server
LocationInformation
Server PSAP
HELD
ECRIT
DHCP INFORM
access domain
PSAP URI
DHCP/DNSServer
DNS NAPTR (access domain)
LIS URI
location
HELD
LoST (location)
connect
at initial start of LNG
with every call
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i3 defined LNG-Functions
• PIF Protocol Interwork Function
• NIF NG 9-1-1 / 1-1-2 Specific Interwork Function
• LIF Location Interwork Function
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looking inside a LNG
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PIF Protocol Interwork Function
Legacy Interfaces(circuit switched) Ethernet IP interfaces (“legacy” side) Border Control Function (BCF) NG 911 Specific Interwork Funct. (NIF) Ethernet IP interfaces (ESInet side)
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NG 112/911 spec. Interwork Function
PIF (receiving call information) LIF ECRF PIF (delivering processed call information)
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connection to individual LIS using HELD
LIF Protocol Interwork Function
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CAMA vs. ISDN
Data for lookup available(with ISDN )
Result with CAMA: delay of call setup
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possible scenario with CAMA best effort call forward
also used if LIS does not respond in time!
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outgoing call via LNG LPG
• works as Legacy PSAP Gateway• handover to other ESInet• Standard Call Gateway
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pure IP- world
in the US 2020 ???in the EU 2025 ???
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Q & A ??
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thanks for staying awake..
contact:
Gregor Jänin, ENP+43 664 357 3632 (GMT+2)
for Questions about 112 Operations Committee