AG ProjectsVON Boston - Fall 2005 Number portability Using ENUM and SIP Adrian Georgescu AG Projects

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Presentation transcript:

AG ProjectsVON Boston - Fall 2005 Number portability Using ENUM and SIP Adrian Georgescu AG Projects

AG ProjectsVON Boston - Fall 2005 Voice paradigm shift The past: One socket in the wall One phone device One service provider Telephone number is “wired” to the socket in the wall. The service, device and address are hardwired to each other by the incumbent telco.

AG ProjectsVON Boston - Fall 2005 Voice paradigm shift Today: Network access - WiFi in the hotel SIP device - my Hitachi WIP500 phone PSTN service - my provider is in the Netherlands Identity - my address is Identity is the only common feature, all items are connected together only at logical level.

AG ProjectsVON Boston - Fall 2005 What changes over time? Each of them may change: I wish I have the latest and most advanced phone I wish I get the cheapest and fast Internet access I wish I call at the cheapest rates to the PSTN I may wish to work abroad, change location I do not want however to change my address every time!

AG ProjectsVON Boston - Fall 2005 Number portability today If you can change your service provider and preserve your telephone number, you benefit of number portability Porting numbers between mobile operators Porting numbers between fixed line operators Porting numbers from mobile to fixed operators Porting numbers across borders (geographical) Current telephone number portability works with limited success and dependent on regulatory in each country

AG ProjectsVON Boston - Fall 2005 Number portability on IP How can I be reached to my identity if I change either the access, the device or the service? SIP maps Internet location of phones with SIP addresses ENUM maps E.164 telephone numbers to SIP addresses The combination of SIP with ENUM provides an ideal number portability solution because they combine the logic of uniting the identity with the access, the device and the service

AG ProjectsVON Boston - Fall 2005 SIP redirect service SIP as a location service supports redirection using 30X response codes (Moved temporary/permanently) A SIP redirect service redirects all calls unconditional to another SIP address (final destination) My SIP address is merely an alias, it points to my sip address: SIP redirect works similar with forwarding, it can be independent of the SIP provider providing the destination SIP address

AG ProjectsVON Boston - Fall 2005 ENUM mappings ENUM is the “missing” link between PSTN and Internet ENUM is an address translation database that maps E.164 numbers into IP addressing schemes (any) My ENUM number points to my SIP address The ENUM mappings are records hosted in the DNS like any other domain name. The domain hosting can be independent of the PSTN service provider.

AG ProjectsVON Boston - Fall 2005 All together now! The recipe for Internet number portability is: ENUM domain hosting Internet domain registration SIP Redirect service Open-garden SIP service provider ENUM enabled PSTN operator User-ENUM ready national registry (opt in)

AG ProjectsVON Boston - Fall What the user must do ?

AG ProjectsVON Boston - Fall What the user must do

AG ProjectsVON Boston - Fall What the user must do

AG ProjectsVON Boston - Fall 2005 On stop shop API Send one SOAP/XML request to the Tier1 registry: registerAccount(domain=lastName.com,number=EN UM) The SOAP request is decomposed into: –Domain registration –DNS zone creation –ENUM NAPTR record creation –SIP alias creation –Recurrent payment

AG ProjectsVON Boston - Fall 2005 Fiction or reality? Internet number portability is already in production status: ENUM.at (Austria) EUROVOICE.ro (Romania)

AG ProjectsVON Boston - Fall 2005

This presentation is available at Thank you, Adrian Georgescu