The Austrian ENUM Trial is closing down

1
The Austrian ENUM Trial is closing down

• ETSI Workshop ENUM
• Febuary 24th, 2004
• Richard STASTNY
• ÖFEG, Postbox 147, 1103-Vienna
• enum43 664 420 4100E-Mail richard.stastny_at_oefe
  g.atrichard_at_stastny.com

2
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,
  numbering) (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 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

4
Proposed Mandate AK-TK ENUM

• Consultation of the NRA (RTR) regarding the
  policy framework
• Definition of the technical and administrative
  processes between providers of ENUM-related
  services
• Creating recommendations for the commercial
  deployment of ENUM in Austria
• Open discussion platform for all ENUM-related
  topics
• Monitoring the international developments,
  participate in international activities and
  exchange the experiences

5
ENUM Background in Austria

• 2000-09 Start of activities
• 2001-08 First consulation by Austrian regulator
  (RTR)
• 2001-09 Telekom Austria internal ENUM Task Force
• 2002-02 ENUM Workshop RTR, group of interested
  partners formed
• 2002-05 Interim procedures from ITU-T SG2 and TSB
  available
• Delegation request by RTR to RIPE
  and ITU-TSB
• 2002-06 Tier 1 Registry in operation by NIC.AT
  (the Austrian ccTLD)
• Delegations for 3.4.e164.arpa
• Start of development and deployment
• 2002-07 First draft of policy framework for MoU
  by RTR
• 2002-09 Austrian ENUM Trial Platform established
  (10 participants)
• 2002-11 Policy Framework and MoU ready, start
  Trial Phase
• 2003-10 Decision to start preparation for
  commercial deployment
• 2004-04 End of Trial, start deployment (planned)

6
Austrian ENUM Trials - Rollout

• 2002-03 Start of planning activities
• 2002-06 ENUM Tier 1 Registry (nic.at and
  Infonova) in operation Start of
  development
• 2002-09 ENUM Tier 2 Nameserver (Telekom Austria)
  in operation
• First clients available (ENUM
  queries on public Internet)
• 2002-10 Web-Portal for registration and
  modification in operation
• SIP and H.323 VoIP applications
  available
• First Live Demo in Atlanta, GA
  (VISIONng/VON/TIPHON) followed by various
  demos at ITU-T, IETF, VON and other workshops
• Set-up of Call Center and Registrar
  (Telekom Austria)
• 2002-11 ENUM Tier 1 Registry processes fully
  automated (nic.at)
• Test of provisioning processes with
  selected subscribers
• 2002-12 Ready to invite real ENUM subscribers and
  users
• 2003-02 Conversion to ETSI TS 102 172 compliance
• 2003-10 First part of trial completed, second
  phase started (business customers)
• 2003-12 Large Scale ENUM and VoIP Pilot started
  at the Uni Vienna (AT43)

7
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.

8
New approaches to ENUM

• New approaches for IP Communications with ENUM
• ENUM for IP-based private networks ("PBX") with
  direct dial in
• ENUM-only 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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ENUM Application and Provisioning
ENUM USER
ENUM DNS QUERY
ENUM TIER 0 NS
RTR policyframework
ITU TSB RIPE NCC
WHOIS
3.4.e164.arpa
ENUM Application email VoIPetc.
Registrynic.at
ENUM TIER 1 NS
ENUM TIER 1 Registry
ENUM DELEGATION
ENUM SP Telekom Austria
x.x.x.x.3.4.e164.arpa
ENUM TIER 2 NS
ENUM TIER 2 Register
ENUM Registrar
Communication
ENUM NAPTR MODIFICATION
VALIDATION
ENUM SUBSCRIBER
Web SERVICES
REGISTRATION
Web portal
10
National Numbering Resources for VoIP

• geographic numbers (fixed)
• possible, but originations only from fixed line
  (for XDSL, VDSL), may use ENUM
• also for IP Centrex and IP PBX with and without
  ENUM
• numbers for networks (fixed and mobile)
• yes, for IP Centrex and IP PBX with and without
  ENUM
• mobile numbers
• not yet, but ideal for ENUM opt-in (and later
  with 3GPP)
• national portable numbers (fixed, mobile,
  personal) - 720
• yes, with and without ENUM, UPT services possible
• numbers for convergent services (mobile,
  personal) - 780
• ENUM-only or ENUM-routed numbers, for virtual
  operators
• 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 (see later)

11
Validation Methods

• Identification verification of identity of ENUM
  subscriber
• (Re-)Validation (re-)check the right to use the
  E.164 number
• Initial Validation for new delegation and for
  registrar change
• Status Validation check if ENUM subscriber still
  has the right to use E.164
• Validation method dependent of number range
• ENUM-only routed numbers (43780)
  (infrastructure)
• only identification required, validation implicit
• Mobile numbers (opt-in)
• identification and validation via SIM-Card (e.g.
  SMS) under investigation
• numbers directly assigned to end-user (e.g.
  private networks) (opt-in)
• identification and validation via assignment
  document
• geographic numbers (opt-in)
• identification and validation via credentials
  under investigation
• If RegistrarTSP Identification and Validation
  internal matter

12
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

13
National Activities 2004

• Establish a national policy framework
• Start commercial deployment of ENUM
• Residential customers
• ENUM-only routed number range 43780
• Mobile numbers (opt-in)
• geographic numbers incl. 43720 (terminating on
  IP)
• geographic numbers (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)
• Generic Gateway and ENUM access codes
• 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

14
International Activities 2004

• Make existing ENUM Trials interoperable
• ETSI ENUM Plugtest Workshop (February 24-25)
• 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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Primary Goals with some Examples

• 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
• Corporate Users (Never touch the PSTN)
• Call Flows
• Broadband AT43 VoIP and ENUM Trial of the Uni
  Vienna
• Linking IP PBX together globally
• The generic gateway (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)
• See presentation tomorrow

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Options for Corporate Users
32_at_iphone.at
32
43 780 123456 32
43179780
43179780 32
17
Large Scale IPC Trial at43

• Large Scale Trial on IP Communications using ENUM
• University of Vienna 100.000 Students
• re-use of existing student account credentials
  via RADIUS
• iptel.org SIP Express Router as SIP proxy with
  call routing, ENUM processing, PSTN interworking
• some functions based on Asterisk open-source
  IP-PBX
• voice-mail, conference bridge, IVR,
• PSTN Connection CISCO 5300 PSTN/ISDN Gateway
  with PRA
• Various Soft- and Hard-phones, WiFi-Phones,
• IP Connection to other universities, communities
  and "IP-PBX"
• Applications Crash test for VoIP, Chat, IM,
  Presence, SMS, use of SIM-Cards
• IP calls free, PSTN-gtIP calls by caller IP-gtPSTN
  with call-by-call accounting
• Naming, Numbering and Addressing with ENUM
• Base sipltstudent-idgt_at_sip.univie.ac.at
• Austrian number for private networks 43 59966
  nnnnnn
• global UPT number 87810 2843 nnnnnn
• ORIGIN 6.6.9.9.5.3.4.e164.arpa.
• NAPTR 100 10 "u" "E2Usip"
  "!\\4359966(.)!sip\\1_at_sip.univie.ac.at!" .

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IP Communications global network

• Phone numbers are now only routable over PSTN
  network
• Connect Friends and Family Customers and
  Suppliers to the E.164 numbering plan using ENUM
• and route this ENUM-enabled calls via the public
  Internet

ENUM
19
The Generic Gateway from the PSTN

• ENUM-only routed number ranges may be routed on
  the PSTN to a generic gateway
• properly set up, such a gateway can handle
  several number ranges, e.g. 43 780 abcdef as
  well as 87810 abcdefghij
• if the range can be determined in lt 7 digits, any
  telco could use a GG anywhere and exit traffic
  early from the PSTN.
• It is up to the PSTN operators to route any
  number in ENUM to these gateways (e.g access code
  or ACQ)
• the gateway forwards the calls depending on NAPTR
  service contents
• doable for SIP and H.323 in one gateway
• iLECs LD operators will carry most of the PSTN
  traffic destined for these number ranges,
• they are in excellent position to terminate these
  calls and grab the gateway business
• Assumption termination revenue gt termination
  cost (IP GG capex/opex)
• with proper authentication and billing, the same
  gateway can also handle calls Internet-gt PSTN
  with certified callerID

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The Interworking
PSTN ENUM-only number range
ITSP
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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