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The Swedish ENUM trial, experience and remaining questions

ENUM Workshop, ETSI Februari 2004. The Swedish ENUM trial, experience and remaining questions. Staffan Hagnell shl@nic-se.se. History. Pre-study spring 2002 ENUM1: Applications and consequences ENUM2: Description of Administrative Routines ENUM4: Requirements a common DNS infrastructure

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The Swedish ENUM trial, experience and remaining questions

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  1. ENUM Workshop, ETSI Februari 2004 The Swedish ENUM trial,experience and remaining questions Staffan Hagnell shl@nic-se.se Staffan Hagnell 2004-02-24

  2. History • Pre-study spring 2002 • ENUM1: Applications and consequences • ENUM2: Description of Administrative Routines • ENUM4: Requirements a common DNS infrastructure • ENUM Trial December 2002 – June 2003 • ENUM Tier-1 Registry run by NIC-SE (.se ccTLD) • contracted by PTS (the National Post and Telecom Agency) • About 6 ENUM Registrars • One traditional TSP, some IP-telephone operators • Over 10 000 E.164-numbers was registered • (Three number series for PABXs)  Staffan Hagnell 2004-02-24

  3. Manually operated administration 1. Application 0. ENUM Tier 1 Registry ENUM registrar (e-mail + fax) 7. 6. Confirm (e-mail) TSP register 2. Validation (fax) Telephone Service Provider 3. Validation (fax) ENUM registrars register 6. Confirm (e-mail) ENUM Subscriber WHOIS Tier 2 Name server 4. Test 5. Registration DNS primary master Staffan Hagnell 2004-02-24

  4. Part of the 6.4.e164.arpa zone ENUM Domain name E.164 number ENUM Subscriber 1.0.4.0.4.4.3.5.8.6.4.e164.arpa. 08-534 404 01 Anders Järvstrand 2.4.1.0.7.1.3.6.4.e164.arpa. 031-701 42 00-99 CR&T 3.6.0.0.1.0.7.1.3.6.4.e164.arpa. 031-701 00 63 Jakob Schlyter 0.2.7.9.6.4.9.0.7.6.4.e164.arpa. 0709-46 97 20 KTH 4.0.9.7.8.6.4.e164.arpa. 08-790 4000-4999 KTH 6.0.9.7.8.6.4.e164.arpa. 08-790 6000-6999 KTH 7.0.9.7.8.6.4.e164.arpa. 08-790 7000-7999 KTH 8.0.9.7.8.6.4.e164.arpa. 08-790 8000-8999 KTH 9.0.9.7.8.6.4.e164.arpa. 08-790 9000-9999 KTH 4.5.5.4.3.5.0.4.6.4.e164.arpa. 040-53 45 54 Lennart Månsson 9.5.8.4.8.3.8.6.4.e164.arpa. 08-38 48 59 Mats Dufberg 9.0.9.7.8.6.4.e164.arpa. 0751-790 000-999 PIN Sweden 4.1.8.7.6.4.e164.arpa. 07814 00-99 PIN Sweden 2.7.8.1.0.3.6.0.7.6.4.e164.arpa. 070-630 18 72 TeliaSonera 8.8.5.2.8.5.2.0.7.6.4.e164.arpa. 070-258 25 88 TeliaSonera 1.6.1.8.6.4.e164.arpa. 08-161 000-999 Stockholm University 2.6.1.8.6.4.e164.arpa. 08-162 000-999 Stockholm University 3.6.1.8.6.4.e164.arpa. 08-163 000-999 Stockholm University 4.6.1.8.6.4.e164.arpa. 08-164 000-999 Stockholm University Staffan Hagnell 2004-02-24

  5. Practical use • Stockholm University and KTH • ENUM as a routing database for IP-telephony • Cost saving • Easer administration • New flexible solutions Staffan Hagnell 2004-02-24

  6. Conclusions mid 2003! • Conclusion from the trial • ENUM as an infrastructure works! • Applications that uses ENUM are few • Most interest for ENUM to support IP-telephony • There was an interest to continue the trial • Extended trial period, until Jun 2004 • The administrative responsibility for the extended ENUM trial is assigned to the National Post and Telecom Agency (PTS) • Investigate financial and administrative routines and rules necessary for the commercial operation of ENUM Staffan Hagnell 2004-02-24

  7. The tough questions remain! • How strict should the requirement be that the E.164 Subscriber and the ENUM Subscriber always are the same (for the corresponding number)? • At time of registration • When the E.164 subscription ends • Who has the right to control the ENUM Domain Name? • The Telephone Service Provider or the E.164 Subscriber And of course all other Commercial aspects!  Staffan Hagnell 2004-02-24

  8. The “one way synchronization” problem ENUM Domain Names E.164 Numbers • How to keep them synchronized? • To a low price for everybody involved (starting with low volumes) • The solution should be based on traditional handling of E.164 numbers (The TSPs don’t want the cost of new systems or routines). • With out the cooperation of all TSPs PTS arpa e164 TSP 4 6 +46-xx xxx xxx +46-xx xxx xxx identical subscriber subscriber Staffan Hagnell 2004-02-24

  9. ASP Entities and relations ENUM Tier 1 Manager ENUM Tier 1 Registry Tier 2 Name Server ENUM Registrar TSP Function for validation ENUM Subscriber E.164 Subscriber Staffan Hagnell 2004-02-24

  10. Roles • ENUM Tier 1 Registry • Should be thin and automatic • ENUM Registrars • Responsible for identifying and validating new ENUM Subscribers • Responsible to inform Tier 1 Registry if an E.164 Subscription ends Who should be allowed to be an ENUM Registrar? Staffan Hagnell 2004-02-24

  11. ASP ENUM Registrars – the TSP solution ENUM Tier 1 Manager ENUM Tier 1 Registry CrefDB “The TSP solution” Tier 2 Name Server ENUM Registrar TSP Function for validation ENUM Subscriber E.164 Subscriber CrefDB: Centralised Reference Database for Number Portability Staffan Hagnell 2004-02-24

  12. ASP ENUM Registrar – “Self-validation” ENUM Tier 1 Manager ENUM Tier 1 Registry CrefDB “Self-validation” Tier 2 Name Server ENUM Registrar TSP Function for validation ENUM Subscriber E.164 Subscriber Staffan Hagnell 2004-02-24

  13. ASP ENUM Registrar – “Stand alone”? ENUM Tier 1 Manager ENUM Tier 1 Registry Tier 2 Name Server ENUM Registrar TSP Function for validation ENUM Subscriber E.164 Subscriber Staffan Hagnell 2004-02-24

  14. ASP ENUM Registrar – “Stand alone”? ENUM Tier 1 Manager ENUM Tier 1 Registry A new player? Tier 2 Name Server ENUM Registrar TSP Function for validation ENUM Subscriber E.164 Subscriber Staffan Hagnell 2004-02-24

  15. The control of the ENUM Domains • Should the ENUM Domain Name be controlled by the TSPs or the E.164 Subscribers? • To decide ENUM Tier 2 Name Server Provider • To decides what ASP-data to put in the ENUM domain • Maybe this gets obvious after it is decided who could be an ENUM Registrar Staffan Hagnell 2004-02-24

  16. Governing ENUM Tier 1 Manager Decision? ENUM Tier 1 Registry ENUM Registrar Contract ENUM Registrar ENUM Subscriber Contract ENUM Subscriber Staffan Hagnell 2004-02-24

  17. Further plans • Finish the report until June 2004 • by the National Post and Telecom Agency (PTS) to the Government • proposals and any recommendations concerning, among other things, financial and administrative routines and rules necessary for the commercial operation of ENUM, financing in the event of permanent introduction of ENUM and the effect of ENUM. • After June 2004 • Not decided yet • My personal wish - a slow start for a permanent operation Staffan Hagnell 2004-02-24

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