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Update on ITU-T ENUM Activities Steven D. Lind AT&T SG-A ENUM - Ad Hoc Update on ITU-T ENUM Activities Steven D. Lind AT&T SG-A ENUM - Ad Hoc February 12, 2001 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc

Workshops and Meetings § IP-Telecom Interworking Workshop on Numbering, Naming, Addressing and Routing (25 Workshops and Meetings § IP-Telecom Interworking Workshop on Numbering, Naming, Addressing and Routing (25 -27 January 2000) § ITU-T Study Group 2 Meetings l l l 7 -17 March 2000 19 -26 October 2000 (Working Party 1/2) 23 January - 2 February 2001 § ITU ENUM Workshop (17 January 2001) 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 2

IP-Telecom Interworking Workshop § Introduction of IETF & ITU-T Environments § Initial List of IP-Telecom Interworking Workshop § Introduction of IETF & ITU-T Environments § Initial List of NNAR Issues to Allow Interworking § Identification of Lead Group to Progress Work 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 3

ITU-T Study Group 2 Meeting 7 -17 March 2000 § Began Work on SG ITU-T Study Group 2 Meeting 7 -17 March 2000 § Began Work on SG 2 Issues § Familiarity with IETF Work Referencing Rec. E. 164 § Submitted I-Ds on: l l l E. 164 Supplement on Number Portability Draft Rec. E. 370 - Service Principles of PSTN-IP Interworking Draft Rec. E. callflows - ENUM Call Flows for Vo. IP Interworking 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 4

Working Party 1/2 Meeting 19 -26 October 2000 § Liaison Developed from WP 1/2 Working Party 1/2 Meeting 19 -26 October 2000 § Liaison Developed from WP 1/2 to IETF/ISOC § Sets Out Common Understandings Made on Administration and other Aspects § Will Form the Basis for On-Going Studies § www. itu. int/infocom/enum/wp 1 -39_rev 1. htm § www. ietf. org/rfc 3026. txt 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 5

Liaison Statement § The Actual Operation of the ENUM DNS ( Liaison Statement § The Actual Operation of the ENUM DNS ("e 164. arpa") was Outside the Scope of Study Group 2. § Information for and Participation by Each Country was a National Matter. l l Each member state would inform the TSB of the name server that would house the country/service specific information. The information to be put into DNS at the country code level would come only from the TSB. 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 6

ITU ENUM Workshop 17 January 2001 § Objective: Discuss Administrative Issues Related to the ITU ENUM Workshop 17 January 2001 § Objective: Discuss Administrative Issues Related to the Operational Deployment of the ENUM Protocol § Tutorials presented on: l l Overview of the Domain Name System ENUM Technical Issues ENUM Administration - Some Numbering Perspectives 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 7

Administration Issues § ISSUE 1: An agreed process needs to be developed, e. g. Administration Issues § ISSUE 1: An agreed process needs to be developed, e. g. , between appropriate authorities. § ISSUE 2: The status of. arpa matters (including e 164. arpa matters) is ? ? § ISSUE 3: The following "issues" text was discussed. l l Building and Maintaining integrity of E. 164 How should Tier 1 Registries be selected? 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 8

Administration Issues (cont. ) § ISSUE 4: These are also items about inserting numbers Administration Issues (cont. ) § ISSUE 4: These are also items about inserting numbers into Registries (for ENUM) for numbers that are within a Country Code for a Country (or an integrated numbering plan), as national matters: l l l How to determine the most appropriate arrangement? Who runs national Registries? An agreed process needs to be developed between participating Member States [of an Integrated Numbering Plan]. 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 9

Administration Issues (cont. ) § ISSUE 5: These are items about inserting numbers into Administration Issues (cont. ) § ISSUE 5: These are items about inserting numbers into DNS for numbering resources that are within a Country Code shared by Networks: l l Assignees of Network Codes need to be formally made aware of their obligations with respect to ENUM. Some ITU-T Recommendations related to E. 164 Network Codes may require review/amendment/revision. 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 10

Administration Issues (cont. ) § ISSUE 6: These are items about inserting numbers into Administration Issues (cont. ) § ISSUE 6: These are items about inserting numbers into DNS for numbering resources that are within a Country Code shared by Groups of Countries (noting that this is work in progress in ITU-T SG 2): l l Assignees of E. 164 resources for Groups of Countries need to be formally made aware of their obligations with respect to ENUM. Some ITU-T Recommendations related to E. 164 resources for Groups of Countries may require review/amendment/revision. 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 11

Administration Issues (cont. ) § ISSUE 7: For E. 164 resources behind a CC+IC Administration Issues (cont. ) § ISSUE 7: For E. 164 resources behind a CC+IC (for Networks) or a CC+GIC (for Groups of Countries), resource assignees are responsible for providing E. 164 assignment information to DNS Administrators (for ENUM). § ISSUE 8: This item was discussed when Number Portability (NP) was considered with respect to ENUM: l In some cases with Number Portability, the name server must point to a Service Registrar on an individual E. 164 number basis, not a number block. 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 12

Administration Issues (cont. ) § ISSUE 9: This item was discussed when aspects of Administration Issues (cont. ) § ISSUE 9: This item was discussed when aspects of Service Providers were considered with respect to ENUM: l Some countries are moving to single number administration and payment for numbers, does this raise additional issues? § ISSUE 10: What is the relationship between a user and a telephone number, and how is that relationship expressed in ENUM? l l Differences across Administrations? Intellectual Property Rights? 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 13

Administration Issues (cont. ) § ISSUE 11: Customer perception where an E. 164 number Administration Issues (cont. ) § ISSUE 11: Customer perception where an E. 164 number that provides access to an ISP, other than the one responsible for the number, experiences differing Qo. S and cost? § ISSUE 12: Privacy of information/consumer protection. § ISSUE 13: Legal intercept? § ISSUE 14: Regulatory implications e. g. , monitoring of Qo. S, etc. ? § ISSUE 15: Determination of who qualifies to be a Service Registrar? 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 14

Administration Issues (cont. ) § ISSUE 16: Concerning some ENUM administration issues related to Administration Issues (cont. ) § ISSUE 16: Concerning some ENUM administration issues related to the Service Registrar models: l Is one model, or are a number of different models, preferable? § ISSUE 17: How can E. 164/DNS integrity be safeguarded if responsibility for number insertion in the DNS lies with the customer? § ISSUE 18: How should validation of subscriber identity, data, and NAPTRs (service-specific records) occur? 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 15

Administration Issues (cont. ) § ISSUE 19: How can number/name hijacking/fraud be prevented? § Administration Issues (cont. ) § ISSUE 19: How can number/name hijacking/fraud be prevented? § ISSUE 20: How will number changes/number churn be handled? § ISSUE 21: How will ceased numbers be notified/recovered? § ISSUE 22: Could prepaid mobile numbers, or pagers, be inserted? If so, how will ownership, e. g. , of mobile terminals, be validated? 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 16

Administration Issues (cont. ) § ISSUE 23: How will changes/ownership/loss/ theft/cease issues be addressed? Administration Issues (cont. ) § ISSUE 23: How will changes/ownership/loss/ theft/cease issues be addressed? Who has these responsibilities? § ISSUE 24: Geographic numbers would lose location information, and will begin to look more like personal numbers. § ISSUE 25: Impact on number plans/number administration? Possible new requirements? § ISSUE 26: Are additional controls required where numbers are shared? 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 17

Administration Issues (cont. ) § ISSUE 27: Should/could requirements on carriers/third parties be enforced? Administration Issues (cont. ) § ISSUE 27: Should/could requirements on carriers/third parties be enforced? § ISSUE 28: There are issues concerning technical/operational matters (such as testing, performance/loading characteristics, dependencies on infrastructure characteristics, etc. ) that are related to ENUM administration. There are matters are related to machine types, architectures, reliability, etc. , as additional technical issues. § ISSUE 30: How is RIPE-NCC to know who is authoritative when claiming so (to RIPE-NCC)? 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 18

Administration Issues (cont. ) § ISSUE 31: When (international) E. 164 addresses are used Administration Issues (cont. ) § ISSUE 31: When (international) E. 164 addresses are used as routing numbers, how can they be authenticated? § ISSUE 32: What ENUM administrative issues apply to E. 164 numbering for global services as defined by ITU-T Recommendations? § ISSUE 33: Other comments and discussions, limited by lack of time included: l l l more concerns about integrated numbering plans subdelegation issues, and opinions that technical issues totally within DNS, or totally within E. 164 numbering resource administration, are out of scope. 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 19

Administration Issues (cont. ) § ISSUE 34: How can competition for ENUM services, and Administration Issues (cont. ) § ISSUE 34: How can competition for ENUM services, and for service provision, be promoted in different market segments and by different service providers? 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 20

ITU-T Study Group 2 Meeting 23 January - 2 February 2001 § Supplement to ITU-T Study Group 2 Meeting 23 January - 2 February 2001 § Supplement to provide guidance to Member States on Implementation Issues out of 1/17 Workshop l Very Rough First Draft Developed § Circular Letter to Promote ENUM Awareness § E 164. arpa still an open issue l l out of scope for SG 2 revolt led by France; all of Europe sympathetic 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 21

ITU ENUM Resource § www. itu. int/infocom/enum/workshopjan 01/ index. html 12 February 2001 S. ITU ENUM Resource § www. itu. int/infocom/enum/workshopjan 01/ index. html 12 February 2001 S. D. Lind - SG A ENUM Ad Hoc 22