ENUM O. Levin Internet Draft RADVISION Document: draft-ietf-enum-h323-00.txt Expires: August 2003 February 2003 ENUM Service Registration for H.323 URL Status of this Memo This document is an Internet-Draft and is in full conformance with all provisions of Section 10 of RFC2026. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. Abstract The H.323 specification [2] defines a means for building multimedia communication services over an arbitrary Packet Based Network, including the Internet. This document registers an ENUM service for H.323 according to specifications and guidelines in RFC2916bis [3]. Levin Expires: August 2003 1 ENUM Service Registration for H.323 URL Table of Contents STATUS OF THIS MEMO....................................................1 ABSTRACT...............................................................1 INTRODUCTION...........................................................3 ENUM SERVICE REGISTRATION..............................................3 THE E2U+H323 ENUM SERVICE..............................................3 CONVENTIONS USED IN THIS DOCUMENT......................................3 SECURITY CONSIDERATIONS................................................3 IANA CONSIDERATIONS....................................................4 AUTHOR'S ADDRESSES.....................................................4 REFERENCES.............................................................4 Levin Expires: August 2003 2 ENUM Service Registration for H.323 URL Introduction The H.323 specification [2] defines a means for building multimedia communication services over an arbitrary Packet Based Network, including the Internet. When H.323 is used in the context of the Internet, it would be useful to take advantages of such services as domain name system (DNS) and ENUM in order to help facilitate the completion of multimedia calls. This document registers an ENUM service for H.323 according to specifications and guidelines in RFC2916bis [3]. ENUM Service Registration As defined in [3], the following is a template covering information needed for the registration of the enumservice specified in this document. - Service Name: "E2U+H323" - URI Scheme(s): "h323:" - Functional Specification: see "The E2U+H323 ENUM Service" section - Security considerations: see "Security Considerations" section - Intended usage: COMMON - Author: Orit Levin - Any other information that the author deems interesting: None The E2U+H323 ENUM Service This document defines the "E2U+H323" service to be used in the "service" sub-field of the "enumservice" as defined in [3]. The H.323 related ENUM record MUST be populated with a standard H.323 URL as defined in [2]. This URL MAY include parameters specifying the specific protocols and the transport means the H.323 entity supports. The H.323 entity MUST fully comply with the procedures defined in [3] for both record retrieval and processing by the DNS client. If, as a result of the ENUM DNS lookup, an H.323 URL matching local policies and capabilities is retrieved, the procedure defined in section "Address Resolution Procedure using DNS" of [5] SHOULD be performed. Conventions used in this document The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC-2119 [1]. Security Considerations The h323-URL information, once populated in the DNS, effectively becomes publicly accessible. The access to the H.323 destinations Levin Expires: August 2003 3 ENUM Service Registration for H.323 URL (published using ENUM) can be secured by techniques and procedures defined in H.235 [4] - the security framework for H.323. The framework defines means for achieving integrity, authentication, non-repudiation, encryption, etc. for H.323 calls. IANA Considerations This document registers the ôE2U+H323ö ENUM service according to specifications and guidelines in RFC2916bis [3] and the definitions in this document. Author's Addresses Orit Levin RADVISION 266 Harristown Road Phone: +1-201-689-6330 Glen Rock, NJ USA Email: orit@radvision.com References 1 RFC 2119 Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. 2 "Packet-based multimedia communications systems", ITU-T Recommendation H.323, Nov 2000. 3 Faltstrom, P. and M. Mealling, "The E.164 to URI DDDS Application", draft-ietf-enum-rfc2916bis-03 (work in progress), Jan 2003. 4 "Security and encryption for H-Series(H.323 and other H.245- based) multimedia terminals", ITU-T Recommendation H.235, Nov 2000. 5 "Usage of URLs and DNS", ITU-T Recommendation H.323 Annex O (work in progress). Levin Expires: August 2003 4