The Austrian ENUM Trial is closing down

1
The Austrian ENUM Trial is closing down

• 59th IETF
• Seoul, South Korea, March 3rd , 2004
• Richard STASTNY
• ÖFEG, Postbox 147, 1103-Vienna
• enum43 664 420 4100E-Mail richard.stastny_at_oefe
  g.atrichard_at_stastny.com

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Why?

• The Austrian ENUM TRIAL Platform has fulfilled
  its task
• demonstrated the feasibility of ENUM (proof of
  concept)
• has its lessons learnt
• solved the open issues (e.g. validation, numbers
  to use) (more or less -)
• considers ENUM ready for production
• so the trial phase is ending
• For commercial deployment it is required
• to create a legal framework and
• to use an (existing) official platform (AK-TK)
• (existing) Austrian Platform for technical
  co-ordination of public telecommunication
  networks and services
• ENUM will be a Working Group within the AK-TK

3
Legal Framework

• New Austrian Telecommunication Law (TKG 2003)
• based on the New European Framework (NRF)
• New Numbering Ordinance in Austria (in
  consultation)
• taking ENUM already into account
• Contract between NRA (RTR) and Tier 1 Registry
  (nic.at)
• contains the policy framework for ENUM
• the charter for the 3.4.e164.arpa domain
• the validation guidelines for the Registrars
• basic technical, operational and administrative
  requirements
• additional technical recommendations from the
  AK-TK

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Lessons learnt in the ENUM Trials

• Basic issues solved
• ENUM technology works,
• ENUM policy and administration most problems
  solved,
• but shift in focus for the business models.
• The original business model of ENUM for
  residential subscribers with opt-in for existing
  numbers has problems
• it's a second line service,
• privacy problems with multiple services (e-mail
  spam)
• Validation and re-validation problem,
• but the major problem is How to overcome
  Metcalfe's Law?
• The usefulness, or utility, of a network equals
  the square of the number of users
• so new approaches are needed.

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New approaches to ENUM

• New approaches for IP Communications with ENUM
• ENUM for IP-based private networks ("PBX") with
  direct dial in
• ENUM-only routed number ranges for IP
  Communications
• mobile numbers with validation via the SIM-Card
• and then the re-launch of the original ENUM model
  starting with teleworkers and road warriors to
  overcome Metcalfe's Law
• Note well IP Communications is not IP Telephony
• it is IP based services
• one of these services is VoIP - and others like
• Directory, Mobility,
• Instant Messaging, Presence, Video, Chat, SMS,
  and, and,
• will become more and more important

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National Numbering Resources for VoIP

• geographic numbers (fixed)
• yes, with and without ENUM (opt-in)
• also for IP Centrex and IP PBX with and without
  ENUM (opt-in)
• numbers for networks (fixed and mobile) - 05xxxx
• yes, for IP Centrex and IP PBX with and without
  ENUM (opt-in)
• mobile numbers 06xx
• not yet, but ideal for ENUM (opt-in) (and later
  with 3GPP)
• national portable numbers (fixed, mobile,
  personal) - 720
• yes, with and without ENUM (opt-in) , UPT
  services possible
• numbers for convergent services (mobile,
  personal) - 780
• ENUM-only or ENUM-routed numbers, for virtual
  service providers
• a number is valid only if there is a
  corresponding ENUM domain and it can be routed
  only via ENUM
• On the PSTN the number needs only to be routed to
  a generic ENUM-enabled gateway

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Validation and Identification

• Identification of E.164 number assignees within
  the ENUM system
• necessary for ENUM-only routed numbers (if
  prepaid is not allowed)
• for other numbers depending on identification
  required for E.164 number
• (Re-)Validation (re-)check the right to use the
  E.164 number
• this does not necessarily require identification
  within ENUM
• Validation methods are therefore dependent on the
  number range used
• ENUM-only routed numbers (43780)
  (infrastructure)
• only identification may be required, validation
  implicit
• Mobile numbers (opt-in)
• validation via SIM-Card (e.g. SMS)
• numbers directly assigned to end-user (e.g.
  private networks) (opt-in)
• validation via assignment document
• geographic numbers (opt-in)
• validation via credentials under investigation
• If RegistrarTSP Identification and Validation
  internal matter

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Austrian National Activities 2004

• Establish a national policy framework
• Start commercial deployment of ENUM 2Q2004
• Residential customers
• ENUM-only routed number range 43780
• Mobile numbers (opt-in)
• geographic numbers (terminating on IP) (opt-in)
• geographic numbers primary line on PSTN (opt-in)
• Corporate Customers (IP PBX and IP centrex)
• geographic numbers incl. 05 (opt-in, IP PBX)
• geographic numbers incl. 05 (ported out, IP
  Centrex)
• Deploy Generic Gateway and ENUM access codes from
  PSTN
• Enable numbers in ENUM for SMS and MMS
• Provide trusted identification on SIP for CLI
• Provide certificates for E.164 numbers
• to be used in signaling and validation
• Usage of SIM-Cards and IMSI for mobile IP
  Communications

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International Activities 2004

• Make existing ENUM Implementations interoperable
• ETSI ENUM Plugtest Workshop (February 24-25)
• Update ETSI TS 102 172 V2 Mid 2004
• add sms/ems/mmsmailto and sms/ems/mmssip
• ETSI ENUM Plugtests planned December 2004 and
  February 2005
• Advance RFC2916bis to draft standard (IETF)
• Register various "enumservices" with IANA
• Make "Interim Procedures" permanent (ITU-T, IAB,
  RIPE)
• next ITU-T SG2 Plenary in May
• Establish national policy frameworks
• 22 CC already delegated in e164.arpa, more to
  come soon
• Start commercial deployment of ENUM
• some countries are already planning commercial
  deployments of ENUM during this year

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ENUM as a glue

• An URI (AoR) entered in an ENUM domain related to
  an E.164 number allows you
• to reach any destination on IP from the PSTN/ISDN
• ported out, ENUM-only routed numbers, access
  codes, ACQ
• to reach any destination on IP directly from IP
• by dialing the full E.164 number as default
• dialing local numbers and cross connections is
  still possible
• if a proper numbering and dialing plan is
  used
• see I-D draft-stastny-enum-numbering-voip-00.txt
• and to reach any destination existing only on the
  PSTN
• but only calls to numbers not found in ENUM are
  routed via the PSTN

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Primary Goals of ENUM

• Primary goals of ENUM
• Goal 1 Never touch the PSTN, if you can avoid it
• Goal 2 If you cannot avoid it
• a. early exit from the PSTN or
• b. late entry to the PSTN
• Goal 3 enable IP Communications (SMS, MMS,
  Presence, IM, Video, )
• Some examples
• Corporate Users (Never touch the PSTN)
• Broadband AT43 VoIP and ENUM Trial of the Uni
  Vienna
• Linking IP PBX together globally
• Generic gateways (early exit from and late entry
  to the PSTN)
• for all ENUM-only routed numbers and others
• Infrastructure ENUM
• The freenum.org trial (late entry to the PSTN)

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The End
Thank you for your attention
www.enum.nic.at www.at43.at/en/
Contact (not Content) is King
Douglas Rushkoff