IANA Registration of Enumservices for Internet Calendaring
RFC 5333

Network Working Group                                            R. Mahy
Request for Comments: 5333                                  Unaffiliated
Category: Standards Track                                   B. Hoeneisen
                                                                Swisscom
                                                            October 2009

       IANA Registration of Enumservices for Internet Calendaring

Abstract

   This document registers Enumservices for Internet calendaring.
   Specifically, this document focuses on Enumservices for scheduling
   with iMIP (iCalendar Message-Based Interoperability Protocol) and for
   accessing Internet calendaring information with CalDAV (Calendaring
   Extensions to WebDAV).

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

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   document authors.  All rights reserved.

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   This document may contain material from IETF Documents or IETF
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   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may

Mahy & Hoeneisen            Standards Track                     [Page 1]
RFC 5333           Internet Calendaring Enumservices        October 2009

   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

1.  Introduction

   ENUM (E.164 Number Mapping, RFC 3761 [1]) is a system that uses DNS
   (Domain Name System, RFC 1034 [2]) to translate telephone numbers,
   such as '+12025550100', into URIs (Uniform Resource Identifiers, RFC
   3986 [3]), such as 'mailto:user@example.com'.  ENUM exists primarily
   to facilitate the interconnection of systems that rely on telephone
   numbers with those that use URIs to identify resources.  The ENUM
   registration here could be used to allow phones, for example, to
   check the free/busy status of a user in their address book or propose
   a meeting with him or her from the user's phone number.

   The Guide to Internet Calendaring [10] describes the relationship
   between various Internet calendaring specifications like this:
   "iCalendar [4] is the language used to describe calendar objects.
   iTIP [5] [iCalendar Transport-Independent Interoperability Protocol]
   describes a way to use the iCalendar language to do scheduling.  iMIP
   [6] [iCalendar Message-Based Interoperability Protocol] describes how
   to do iTIP scheduling via e-mail".

   Recently, another Standards Track protocol for calendar and
   scheduling access has appeared.  CalDAV (Calendaring Extensions to
   WebDAV) [7] is a WebDAV (Web-based Distributed Authoring and
   Versioning) [8] based mechanism for manipulating Internet calendars,
   viewing free/busy lists, and via a planned scheduling extension [15],
   could be used for proposing calendar events as well in the future.

   The existing 'mailto:' URI scheme (defined in RFC 3986 [3]) is
   already used to address iMIP compatible Calendar Services.  Likewise,
   the existing 'http:' and 'https:' URI schemes (defined in RFC 2616
   [11] and RFC 2818 [12]) are already used to address CalDAV compatible
   Calendar Services.

   This document registers Enumservices for scheduling and accessing
   Internet calendaring information associated with an E.164 number.

Mahy & Hoeneisen            Standards Track                     [Page 2]
RFC 5333           Internet Calendaring Enumservices        October 2009