19
Status and Development of VoIP based emergency calls Alexander Mayrhofer, nic.at GmbH The 1st European Security and Safety Summit Brussels, June 2007
Status and Development of VoIP based emergency
calls
Alexander Mayrhofer, nic.at GmbHThe 1st European Security and
Safety SummitBrussels, June 2007
Agenda
Motivation for a new emergency call services architecture
IETF architecture overview nic.at/IPA emergency call services
registry project in Austria
About nic.at/IPA
IPA: Internet Foundation Austria fostering the develoment of Internet in Austria
owner of nic.at – country code domain registry for .at
enum.at – ENUM registry for +43 neutral provider critical, internet based
registry infrastructure – emergency services registry
Alexander Mayrhofer: team leader research/development nic.at
Motivation for a new
emergency call architecture Overview of current model New communication means (eg
VoIP) break this modelseperation of service and accessmobility (number <-> location
relation)no phone numbers at allNew "media" (video, chat, IM)
call routing requirements
Routing the call to the right PSAPcaller locationlocal policy
Providing the PSAP with caller informationlocationcallback information (number)
current call routing
(Austria) Routing to the right PSAP
number -> location -> PSAP contactnumber -> area code -> PSAP contactcell id -> PSAP contact
Providing PSAP with infonumber: CLI display forcedlocation: number directory reverse
lookupor out of band location request
"Conventional"
communications Closed, trusted network
trusted identities: numbers Access and service provided by
one party (or tightly integrated)location retrieval relatively easy
Well known set of applicationsmostly telephony
VoIP mobility example
Internet(various
providers)
Internet(various
providers)
VoIPSP
VoIPSP
Vienna, Austria
Brussels
+43 59966
Accessprovider
Accessprovider
112
Brussels Police
?
Vienna Police
"internet based" communications
Open, untrusted networkrequires additional security/trust
layers Service and Access provided
by different providerslocation retrieval more difficult
Vast array of applicationseven "VoIP" is not always the same
internet emergency service
issues access network knows the location,
service provider needs itand they don't know of each otherservice not limited to one access
network Numbers can't always be used as
key for informationMost services don't use numbers at all
Trust relation, security, authenticity
IETF emergency services
work Working groups: ECRIT, GEOPRIV Location delivery (LCP) Service identification (service URN) Service discovery (LoST) Privacy, security (location by
reference, location signing)
IETF architecture
overview I Access network provides location
to clientcivic (street, number, postal code,
city...)geodetic (latitude, longitude,
elevation)By value / by reference
Location configuration
Internet(various
providers)
Internet(various
providers)
VoIPSP
VoIPSP
Vienna, Austria
Brussels
Accessprovider
Accessprovider
Brussels Police Vienna Police
LSLS
lat,lon..
IETF architecture
overview II Client queries for PSAP contacts
using location information receiveduses "Location to Service Translation"
(LoST) serverseither before the emergency call, or
when client is started (if it is not moved)
Client knows PSAP contacts for services based on his location
Location to Service
Translation
Internet(various
providers)
Internet(various
providers)
VoIPSP
VoIPSP
Vienna, Austria
Accessprovider
Accessprovider
Brussels Police Vienna Police
LSLS LoSTLoSTQ: sos.police for lat/lon?A: [email protected]
Current situation in
Austria Emergency numbers now officially
assigned Assignees are required to provide
information about desired routing (Telephony) Network Service
Providers are required to provide information about implemented routing
IPA/nic.at Emergency
Services Project Architecture requires a shared, up-to-
date reference database of service areas and contact data for all short codesDoes currently not exist in Austria!
Motivation for nic.at: critical, registry based service to be provided by a neutral, trusted party – vast experience.
Important for the development of new communication means
Scope of project
Practical application of those standards under development
provide a prototypic implementation of a next generation emergency call routing infrastructureLocation-enabling access networkscollecting and providing call routing data
(registry) – LoST serverenabling PSAPs for new services
Questions & contact info
Questions?
Alexander Mayrhofernic.at GmbH
Karlsplatz 1/2/9A-1010 Wien
mailto:[email protected] - +43 1 5056416 34
