You can learn more about ENUM, the Internet Engineering Task Force (IETF), and the International Telecommunications Union (ITU) at the web sites and in the documents listed below.

Internet Sites Providing ENUM-Related Information

RFC 2916, E.164 Number and DNS
This document is the core ENUM Protocol document. This document discusses the use of the Domain Name System (DNS) for storage of E.164 numbers. More specifically, it discusses how DNS can be used for identifying available services connected to one E.164 number.

A Dynamic Delegation Discovery System (DDDS) Database Using The Domain Name System
This document is an Internet Draft that describes a Dynamic Delegation Discovery System Database using the Domain Name System as a distributed database of Rules. The Keys are domain-names and the Rules are encoded using the NAPTR Resource Record. Since this document officially makes RFC 2915 obsolete, it is the official specification for the NAPTR DNS Resource Record.

RFC 2826, IAB Technical Comment on the Unique DNS Root
This document is an RFC presented by the Internet Architecture Board (IAB). This document explains why the DNS requires a single root in order to operate properly.

RFC 3026, Liaison to IETF/ISOC on ENUM
This document is an RFC that conveys the understandings of Working Party 1/2, of the International Telecommunication Union Telecommunication Standardization Sector (ITU-T), whose collaborators met in Berlin, Germany, on October 19-26, 2000.

International Telecommunication Union web site
This is the web site for the International Telecommunication Union, which is headquartered in Geneva, Switzerland. The ITU is an international organization for the purpose of coordinating global telecom networks and services. This web site provides information on the ITU and its member organizations (Radio Communication, Telecom Standardization, and Telecom Development). It also provides information about upcoming meetings and conferences, as well as access to ITU publications.

ITU ENUM Activities
This is the web site for ITU ENUM Activities; it is a subsection of the ITU web site listed above. This site provides downloads of presentations given at recent workshops and related documents. It has links to ENUM news and upcoming ITU ENUM events.

Internet Engineering Task Force (IETF) web site
This is the web site for the Internet Engineering Task Force, an international organization that is concerned with the evolution and operation of the Internet. This web site provides an overview of the IETF, information about Internet Engineering Steering Group (IESG) activities, links to working group charters, Internet Drafts, and RFCs (Requests for Comments). It also provides information on upcoming meetings and proceedings of past meetings.

Telephone Number Mapping (ENUM) Working Group Charter
This web page contains the ENUM working group charter. This working group has been chartered to define a DNS-based architecture and protocols for mapping a telephone number to a set of attributes (e.g., URLs) which can be used to contact a resource associated with that number.

ENUM Call Flows for VoIP Interworking
This document is an Internet Draft that provides illustrations of the use of ENUM functionality and identifies issues associated with such use.

ENUM Administrative Process in the U.S.A.
This document is an Internet Draft that considers administrative processes for ENUM in the U.S.A. and offers two "strawman" proposals in the spirit of moving forward the work that must be done to implement a useful ENUM capability.

Voice Profile for Internet Mail (VPIM) working group charter
This web page contains the VPIM working group charter. VPIM Version 2 is currently a Proposed Standard (RFC 2421). VPIM is an application of Internet Mail originally intended for sending voice messages between voice messaging systems. This working group promotes the advancement of VPIM v2 on the standards track.

Session Initiation Protocol (SIP) working group charter
This web page contains the SIP working group charter. The Session Initiation Protocol (SIP) working group has been chartered to continue the development of SIP, currently specified as proposed standard RFC 2543. SIP is a text-based protocol, similar to HTTP and SMTP, for initiating interactive communication sessions between users. The main work of the group involves bringing SIP from proposed to draft standard, in addition to developing proposed extensions.

Assignment Procedures for the URI Resolution using DNS
This document is an Internet Draft that defines the policies and procedures for inserting NAPTR records into the 'URI.ARPA' and 'URN.ARPA' zones for the purpose of resolving URIs according to "URI Resolution using the Dynamic Delegation Discovery System."

CyberTelecom web site
This web page is the Internet Telephony section of the Washington Internet Project web site. It includes Internet Telephony news and information on regulatory proceedings and international settlements, as well as links to other Internet Telephony web sites.

The ENUM Forum Activities
This is the web site for activities of the ENUM Forum. The ENUM Forum is an industry group formed to address issues related to the implementation of Tier 1 ENUM in the United States. This site provides information on the ENUM Forum, as well as documents and information about ongoing activities.

Additional Documents Providing ENUM-Related Information

Acronyms and Definitions
This document identifies many of the terms that are referred to in ENUM documentation.

ENUM: Driving Convergence in the Internet Age
This NeuStar document provides a basic overview of ENUM, as well as an overview of what applications may potentially benefit from ENUM.

Meeting Notes from IETF Study Group A
These are the notes from the meeting of Study Group A that took place on February 12 and 13, 2001, in McLean, Virginia.

Study Group A Presentation on ENUM
This is a presentation by Richard Shockey, co-chair of the IETF ENUM Working Group and Senior Technical Industry Liaison for NeuStar, Inc. The presentation was given during the February 12-13, 2001, meeting of Study Group A. This document provides a brief overview of ENUM, including some information on DNS, E.164 numbers, and sample call flows.

ITU Report of the Secretary-General on IP Telephony
This is the ITU report on IP telephony, dated January 31, 2001. This document contains an overview of the current state of Internet Telephony as well as a review of ITU views of ENUM.

Issues from ITU ENUM Workshop
This document provides information on some of the issues that were discussed and comments that were made during the ITU ENUM Workshop on January 17, 2001 in Geneva, Switzerland.

IP Telephony Technology Finding Wider Acceptance
This article, which appeared in the April 30, 2001, edition of Network World Fusion, discusses the widening acceptance of ENUM, and also makes mention of the success of various ENUM trials.

ENUM-Enabled Services: Beyond the Bits and Bytes
This presentation was given by Matt Wald, NeuStar's Vice President of IP Services, at the Spring meeting of Voice on the Net.

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