The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation Discovery System (DDDS) Application (ENUM)
RFC 6116
Document | Type |
RFC - Proposed Standard
(March 2011; No errata)
Obsoletes RFC 3761
|
|
---|---|---|---|
Authors | Lawrence Conroy , Scott Bradner , Kazunori Fujiwara | ||
Last updated | 2015-10-14 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6116 (Proposed Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Gonzalo Camarillo | ||
IESG note |
Richard Shockey (richard@shockey.us) is the document shepherd. Cluster - draft-ietf-enum-3761bis - draft-ietf-enum-enumservices-guide - draft-ietf-enum-enumservices-transition |
||
Send notices to | (None) |
Internet Engineering Task Force (IETF) S. Bradner Request for Comments: 6116 Harvard University Obsoletes: 3761 L. Conroy Category: Standards Track Roke Manor Research ISSN: 2070-1721 K. Fujiwara JPRS March 2011 The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation Discovery System (DDDS) Application (ENUM) Abstract This document discusses the use of the Domain Name System (DNS) for storage of data associated with E.164 numbers, and for resolving those numbers into URIs that can be used (for example) in telephony call setup. This document also describes how the DNS can be used to identify the services associated with an E.164 number. This document obsoletes RFC 3761. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc6116. Copyright Notice Copyright (c) 2011 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of Bradner, Conroy & Fujiwara Standards Track [Page 1] RFC 6116 ENUM Protocol Specification March 2011 the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction ....................................................3 1.1. Terminology ................................................3 2. Use of These Mechanisms for Private Dialing Plans ...............4 3. The ENUM Application Specifications .............................4 3.1. Application Unique String ..................................4 3.2. First Well Known Rule ......................................5 3.3. Expected Output ............................................5 3.4. Valid Databases ............................................5 3.4.1. Optional Name Server Additional Section Processing ..6 3.4.2. Flags ...............................................6 3.4.3. Service Parameters ..................................7 3.4.3.1. ENUM Services ..............................7 3.4.3.2. Compound NAPTRs and Implicit ORDER/PREFERENCE Values ....................8 3.5. The ENUM Algorithm Always Returns a Single Rule ............8 3.6. Case Sensitivity in ENUM ...................................8 3.7. Collision Avoidance ........................................9 4. ENUM Service Example ...........................................10 5. Clarification of DDDS Use in ENUM ..............................10 5.1. Collected Implications for ENUM Provisioning ..............11 5.2. Collected Implications for ENUM Clients ...................13 5.2.1. Non-Terminal NAPTR Processing ......................15 6. IANA Considerations ............................................16 7. Security Considerations ........................................17 7.1. DNS Security ..............................................17 7.2. Caching Security ..........................................18 7.3. Call Routing Security .....................................19 7.4. URI Resolution Security ...................................19 8. Acknowledgements ...............................................19 9. Changes from RFC 3761 ..........................................19 10. References ....................................................20 10.1. Normative References .....................................20 10.2. Informative References ...................................21 Bradner, Conroy & Fujiwara Standards Track [Page 2] RFC 6116 ENUM Protocol Specification March 2011Show full document text