1 911 Background  Traditional 911 ~6,000 PSAPs in the US Selective routers route calls to correct PSAP –Operated by carriers –Relies on DB of fixed subscriber.

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Presentation transcript:

1 911 Background  Traditional 911 ~6,000 PSAPs in the US Selective routers route calls to correct PSAP –Operated by carriers –Relies on DB of fixed subscriber addresses Calling number (ANI) “pulsed” over CAMA trunk –1970s technology Number resolved to address (ALI) through geo-DB (MSAG) PSAPs under pressure for years to support cellular E-911  Internet has been a thorn in the side of VoIP FCC 911 mandate

2 What Makes NG911 Hard German Tourist Taiwanese VSP ISP=T-Mobile Germany PSAP Rhode Island Mobility ISP≠VSP Not just “9-1-1” Closed, proprietary legacy systems emergency = “1-1-2”

3 NG911  NG911 Project Goal: deploy proof-of-concept IP-enabled PSAPs $1.3 million dollar, two-year project funded by NTIA, the States of Texas and Virginia 911 offices, Cisco and Nortel National Emergency Numbering Association (NENA) participation  Goal of NG911 is, not only to solve VoIP 911, but to do better! Higher resilience Faster call setup Testability Internationality Multimedia support Open standards and COTS Cheaper

4 Components of Emergency Calling Contact well-known emergency number or ID Route call to location- appropriate PSAP Deliver precise location to PSAP for dispatch NowTransitionAll IP dial 112, 911  urn:service:sos selective router VPCDNS, LUMP number  location (ALI) in-band  key  location in-band NENA I2NENA I3 Establish caller location fixed fixed or infrastructure discovers Client or proxy learns (e.g. GPS, CDP, LLDP-MED, DHCP) This slide adapted from a slide of Henning Schulzrinne (Columbia University)

5 Sample NG911 Call-flow Taiwanese VSP ISP PSAP Rhode Island (e.g. via DHCP) INVITE urn:service:sos To: urn:service:sos mapping INVITE To: urn:service:sos

6 PSAP Interface This slide complements of Henning Schulzrinne (Columbia University)

7 Bryan, TX PSAP NG911 Workstation

8 For More Information  ECRIT (Emergency Contact Resolution with Internet Technologies) WG Standardizing: –location conveyance (with SIPPING & GEOPRIV) –emergency call identification –mapping geo and civic caller locations to PSAP –discovery of local and visited emergency dial string  NG911 Project

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