The Austrian ENUM Trial is closing down

ETSI Workshop ENUMFebuary 24th, 2004

Richard STASTNYÖFEG, Postbox 147, 1103-Vienna

enum:+43 664 420 4100E-Mail: richard.stastny@oefeg.at

richard@stastny.com

Richard Stastny

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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

Why?

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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

Legal Framework

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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

Proposed Mandate AK-TK ENUM

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ENUM Background in Austria

2000-09 Start of activities2001-08 First consulation by Austrian regulator (RTR)2001-09 Telekom Austria internal ENUM Task Force2002-02 ENUM Workshop RTR, group of interested partners formed2002-05 Interim procedures from ITU-T SG2 and TSB available Delegation request by RTR to RIPE and ITU-TSB2002-06 Tier 1 Registry in operation by NIC.AT (the Austrian ccTLD) Delegations for 3.4.e164.arpa Start of development and deployment2002-07 First draft of policy framework for MoU by RTR2002-09 Austrian ENUM Trial Platform established (10 participants)2002-11 Policy Framework and MoU ready, start Trial Phase2003-10 Decision to start preparation for commercial deployment2004-04 End of Trial, start deployment (planned)

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Austrian ENUM Trials - Rollout

2002-03 Start of planning activities2002-06 ENUM Tier 1 Registry (nic.at and Infonova) in operation

Start of development2002-09 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 subscribers2002-12 Ready to invite real ENUM subscribers and users2003-02 Conversion to ETSI TS 102 172 compliance2003-10 First part of trial completed, second phase started (business

customers)2003-12 Large Scale ENUM and VoIP Pilot started at the Uni Vienna (AT43)

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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.

Lessons learnt in the ENUM Trials

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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

New approaches to ENUM

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ENUM Application and Provisioning

ENUM TIER 2

NS

ENUM TIER 1

NS

ENUM TIER 0

NS

Internet ENUM TIER 1 Registry

ENUM TIER 2 Register

ENUM Registrar

ENUM SUBSCRIBE

R

ENUM USER

ENUM DNS

QUERY

ENUM Application email

VoIPetc.

Communication

REGISTRATION

ENUM NAPTR

MODIFICATION

ITU TSB RIPE NCC

3.4.e164.arpa

x.x.x.x.3.4.e164.arpa

Web SERVICES

Registrynic.at

ENUM SP Telekom Austria

Web portal

ENUMDELEGATION

RTR policy

framework

VALIDATION

WHOIS

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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)

National Numbering Resources for VoIP

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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 Registrar=TSP: Identification and Validation internal matter

Validation Methods

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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

ENUM as a glue

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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

National Activities 2004

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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

International Activities 2004

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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

Primary Goals with some Examples

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Options for Corporate Users

ENUM

TDM TDM TDM +43179780

PBX

32@iphone.at

GW

+43 780 123456 32

GK Internet

* GK oder SIP Server

+43179780 32

+43179780 32 32@iphone.at

+43 780 123456 32 32@iphone.at

GW

32

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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->IP calls by caller; IP->PSTN with call-by-call

accounting Naming, Numbering and Addressing with ENUM

Base: sip:<student-id>@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" "E2U+sip" "!^\\+4359966(.*)$!sip:\\1@sip.univie.ac.at!" .

Large Scale IPC Trial at43

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IP Communications global network

1. Phone numbers are now only routable over PSTN network

2. Connect “Friends and Family” Customers and Suppliers to the E.164 numbering plan using ENUM

3. and route this ENUM-enabled calls via the public Internet

ENUM

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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 < 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

iLEC‘s & 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 > termination cost (IP & GG

capex/opex) with proper authentication and billing, the same gateway can

also handle calls Internet-> PSTN with certified callerID

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The Interworking

PSTNENUM-only

number range

PSTNENUM-only

number range

ITSP

generic gatewayoperator

ENUM

Tier2 DNS

NAPTR

ENUM

Tier1 DNS

number allocation & ENUM delegation

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The End

Thank you for your attention

Contact (not Content) is King Douglas Rushkoff

www.enum.nic.at www.at43.at/en/