NG911 - Next-Generation Emergency Calling.ppt

NG911-Next-GenerationEmergencyCallingHenningSchulzrinne(withJongYulKim,WonsangSong,AnshumanRawat,MatthewMintz-Habib,AmritaRajagopalandXiaotaoWu)(publicsafetyansweringpoint).,calllocationtofirstrespondervoiceonly(+TDD)NG-oordinationemergencyalert(“inverse911”)NG-ponentsofemergencycallingContactwell-knownnumberoridentifierRoutecalltolocation-appropriatePSAPDeliverpreciselocationtocalltakertodispatchemergencyhelpnowtransitionallIP1**********dial112,911urn:service:sosselectiverouterVPCDNSphonenumberlocation(ALIlookup)in-bandkeylocationin-bandNG-November2006WhatmakesVoIP112/911hard?POTSPSTN-emulationVoIPend-to-endVoIP(landline)phonenumberlimitedtolimitedarealandlinephonenumberanywhereinUS()nophonenumberorphonenumberanywherearoundtheworldregionalcarriernationalorcontinent-widecarrierenterprise“carrier”oranybodywithapeer-to-peerdevicevoiceprovider=lineprovider(~businessrelationship)voiceprovider≠ISPvoiceprovider≠ISPnationalprotocolsandcallroutingprobablyNorthAmerica+EUinternationalprotocolsandroutinglocation=linelocationmostlyresidentialorsmallbusinessstationary,nomadic,wirelessNG-November2006ThecoreproblemVoiceServiceProvider(VSP)seesemergencycallbutdoesnotknowcallerlocationISP/IAPknowsuserlocationbutdoesnothandlecallNG-November2006Stageddeployment~6,134PSAPsinNorthAmericaaverage2-3activecalltakerseachsomeservetown,somelargepartsofastateonly~30%ofPSAPscanreceivegeocoordinates30-40%technology“CAMA”(operator)trunkslimitedtodelivering8(regional)or10digits(national)ofinformationalreadyfacingpressurefromsupportingcellularservicesPhaseI(celltowerandface)andPhaseII(callergeolocation)EU:smallernumberofPSAPs,butoftenwithoutlocationdeliveryNG-ponentsLocationdeterminationCall