Next Generation 9-1-1 (NG9-1-1)

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Next Generation 9-1-1 (NG9-1-1)
HELP!!

• Jong Yul Kim, Wonsang Song,
• and Henning Schulzrinne

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What is Next Generation 9-1-1?

• NG9-1-1 is
• An interoperable networks and systems for voice,
  data, and radio among emergency response agencies
• A set of coordinated applications on an IP
  internetwork that serves multiple governmental
  functions and seamlessly interfaces voice and
  electronic data. (NENA/IETF model)
• A system of systems.
• 9-1-1 Magazine, Jan/Feb 2007 issue

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Why Next Generation 9-1-1?

• Because current 9-1-1 system cannot deal with
• New devices and data sources
• Internet phones, instant messengers, sensors
• Multimedia-capable (voice, text, images, video)
• Mobility
• VoIP calls can be made from anywhere on earth
• Nomadic vs. Mobile
• 9-1-1 Magazine, Jan/Feb 2007 issue

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What is our goal?

• Develop a prototype that enables
• End-to-end IP calls
• Multimedia
• Caller location determination
• Correct routing
• Develop Proof-of-Concept
• Deploy system across different PSAPs
• Test what makes sense, what doesnt
• Come up with transition scenarios

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Who is involved? (POC)
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Prototype looks like this.
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Thats all.

• Thank you for listening.

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Locating Caller using LLDP-MED
LLDP-MED stands for Link Layer Discovery
Protocol a vendor-neutral Layer 2 protocol
that allows a network device to advertise its
identity and capabilities on the local
network. Media Endpoint Discovery an
enhancement to the LLDP that allows discovery of
other things including location
From Wikipedia
I am LLDP-MED Capable. I can process location
information.
Your location is 500 W 120TH st. New York NY
10027
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DHCP for Location

• Mainly for stationary users
• We modified ISCs dhcpd to generate location
  information
• Use MAC address to get location information

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CDP for Location

• Mainly for stationary and nomadic users
• Cisco Discovery Protocol (Layer2)
• Cisco switches broadcast switch/port ID
  periodically.
• A Switch covers a floor, a port leads to a jack
  in a room
• -gt room-level accuracy

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SkyHook for Location

• Mainly for nomadic, mobile users
• Wireless device receives signals from Wi-Fi sites
  in range
• Skyhook compares signals to its database of
  geographically known locations
• Location data is used to direct safety services

Taken from http//www.skyhookwireless.com
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Routing Using LoST

• LoST stands for
• Location-to-Service Translation
• Work in progress at IETF ECRIT WG

Emergency Dial String
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SIPc, a multi-function SIP UA

• Function (caller side)
• Identifies and initiates emergency call
• Determines location from various sources
• Function (calltaker side)
• Interfaces with location mapping software
• Shows calltaker status, responder list, incident
  type
• Implementation
• Tcl/Tk based User Interface and SIP stack
• External programs for audio, video, application
  sharing, stun, etc.

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Location Information Sources

• Function
• Provides location information to SIPc
• Implementation
• GPS USB device and NMEA 0183 parser
• Location Information Server built using Apache,
  MySQL, and PHP

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LoST Cluster

• Function
• Translates (Location, Service) to a PSAP URL and
  emergency dial string
• Verifies civic address
• Implementation
• PostgreSQL with PostGIS extension as a Database
• US county boundary polygons to simulate geo PSAP
  boundary
• Sample MSAG data for civic PSAP boundary
• Tomcat Axis for Web Service

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sipd, a SIP proxy and registrar

• Function
• Routes call to destination
• Resolves SIP URL to a reachable address
• Invokes sip-cgi for in-network special services
• Implementation
• CINEMA (Columbia InterNet Extensible Multimedia
  Architecture)
• sip-cgi is perl-based

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psapd, a back-to-back SIP UA

• Function
• Facilitates multi-party conference setup
• Distributes incoming call to call takers
• Logs call details
• Implementation
• CINEMA C library (libsipapi)
• Call distribution logic is written in Tcl

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psapd handles an incoming call

• All signals go through psapd
• psapd controls conference instances through MSCML
• Media is directed to conference server

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Conference Server

• Function
• Mixes and records audio
• Distributes video
• Call Queuing
• Interactive Voice Response
• Implementation
• sipconf from CINEMA
• Snowshore IP Media Server from Cantata Technology

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Location Mapping Software

• Function
• Plots callers location and other information on
  a local map
• Shows nearby responders on map
• Implementation
• Geolynx Mapping System from GeoComm
• Google Maps

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Emergency Call Flow
LoST Cluster
SOS caller
SIP proxy
call taker