LNG for NG 9-1-1/ NG 1-1-2 Realization of IETF Standards for the - - PowerPoint PPT Presentation

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LNG for NG 9-1-1/ NG 1-1-2 Realization of IETF Standards for the - - PowerPoint PPT Presentation

Sep 15, 2023 126 likes •338 views

LNG for NG 9-1-1/ NG 1-1-2 Realization of IETF Standards for the operational use in a Legacy Network Gateway for Next Generation Emergency Communication Centers Gregor Jnin, ENP 5/13/10 Background Work being done: Detailed

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SLIDE 1

LNG for NG 9-1-1/ NG 1-1-2

Realization of IETF Standards for the operational use in a Legacy Network Gateway for Next Generation Emergency Communication Centers

Gregor Jänin, ENP 5/13/10

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SLIDE 2

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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SLIDE 3

Big Picture

Wireless/IP Client DNS Public Web Services Wireless/CS Client LISs Multimedia Services Originating ESRP Originating Border Control Location Validation Web Interface

ESInet

Global Internet, Private Networks

  • r IMS

Public Access IP Networks

SIP/H.323 clients IM Clients Legacy PSAP/Emergency Responders CSP Call Server Government Services Supplemental Services Databases

NG9-1-1 (i3) PSAP

ESInet

Access Networks Origination Networks Emergency Services IP Network (ESInet) Domains

Terminating ESRP Terminating Border Control

Clients Legacy Circuit- Switched Networks

PSTN client Legacy PSAP Gateway E-CSCF (IMS) Legacy Network Gateway ECR Web Interfaces Private Web Services

NG9-1-1 (i3) PSAP

Emergency Call Routing & Location Validation Databases

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SLIDE 4

“NG-911” at the moment

IP Network of Telecoms (VoIP) PSAP IP Network (VoIP) pure wire circuit switched connection ANI/ALI request

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SLIDE 5

ESInet, what’s the right way

Standard PSTN 2 VoIP Gateway

?

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SLIDE 6

Gateway overview

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SLIDE 7

placing a Gateway now

  • using a standard PSTN 2 VoIP gateway
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SLIDE 8

Job of a LNG

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SLIDE 9

Discovering & Calling a PSAP with ECRIT

Client LoST Server Location Information Server PSAP

H E L D E C R I T

DHCP INFORM access domain PSAP URI

DHCP/DNS Server

DNS NAPTR (access domain) LIS URI location HELD LoST (location) connect

at initial start of LNG with every call

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SLIDE 10

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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SLIDE 11

looking inside a LNG

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SLIDE 12

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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SLIDE 13

NG 112/911 spec. Interwork Function

  • PIF (receiving call information)
  • LIF
  • ECRF
  • PIF (delivering processed call information)
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SLIDE 14
  • connection to individual LIS
  • using HELD

LIF Protocol Interwork Function

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SLIDE 15

CAMA vs. ISDN

Data for lookup available (with ISDN )

Result with CAMA: delay of call setup

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SLIDE 16

possible scenario with CAMA

  • best effort call forward

also used if LIS does not respond in time!

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SLIDE 17
  • utgoing call via LNG LPG
  • works as Legacy PSAP Gateway
  • handover to other ESInet
  • Standard Call Gateway
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SLIDE 18

pure IP- world

in the US  2020 ??? in the EU 2025 ???

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SLIDE 19

Q & A ??

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SLIDE 20

thanks for staying awake..

contact:

Gregor Jänin, ENP

+43 664 357 3632 (GMT+2) gregor.jaenin@dispo.net

for Questions about 112 Operations Committee

gj@eena.org