Internet Engineering Task Force (IETF) D. Cauchie
Request for Comments: 6715 France Telecom - Orange
Category: Standards Track B. Leiba
ISSN: 2070-1721 K. Li
Huawei Technologies
August 2012
vCard Format Extensions: Representing vCard Extensions Defined by the
Open Mobile Alliance (OMA) Converged Address Book (CAB) Group
Abstract
This document defines extensions to the vCard data format for
representing and exchanging certain contact information. The
properties covered here have been defined by the Open Mobile Alliance
(OMA) Converged Address Book group, in order to synchronize, using
OMA Data Synchronization, contact fields that were not already
defined in the base vCard 4.0 specification.
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/rfc6715.
Copyright Notice
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Cauchie, et al. Standards Track [Page 1]
RFC 6715 vCard-OMA-CAB August 2012 Table of Contents 1. Introduction ....................................................2 1.1. A Brief Introduction to the Converged Address Book .........2 1.2. Terminology Used in This Document ..........................3 2. vCard Extensions: Properties ....................................3 2.1. Property: EXPERTISE ........................................3 2.2. Property: HOBBY ............................................4 2.3. Property: INTEREST .........................................5 2.4. Property: ORG-DIRECTORY ....................................6 3. vCard Extensions: Parameters ....................................7 3.1. Parameter: INDEX ...........................................7 3.2. Parameter: LEVEL ...........................................8 4. Security Considerations .........................................8 5. IANA Considerations .............................................9 6. Acknowledgments .................................................9 7. References .....................................................10 7.1. Normative References ......................................10 7.2. Informative References ....................................10 1. Introduction Synchronization of an Open Mobile Alliance Converged Address Book [OMA-CAB], using Open Mobile Alliance Data Synchronization [OMA-DS], commonly uses vCard as an exchange format between the DS Server and the DS Client. In order to properly perform synchronization of an OMA-CAB, the CAB specification defines some CAB contact fields not already defined in the vCard base specification. This document reuses the definitions found in the OMA-CAB specification and describes them as vCard extensions. The following sections define the necessary Properties and Parameters. 1.1. A Brief Introduction to the Converged Address Book The Converged Address Book (CAB) Enabler provides consistent mechanisms to manage contact information both in user-facing applications and in support of network-facing activities. At the core of this enabler is a network-based contact repository in which a user can store contact information. That information can be retrieved by any CAB-enabled device. The network-based repository is also able to provide specific contact information to other users and to keep their copies up to date whenever the information is changed. The CAB Enabler provides synchronization of the contact information available in the user device(s) with the network-based contact repository. Cauchie, et al. Standards Track [Page 2]
RFC 6715 vCard-OMA-CAB August 2012 The CAB Enabler also manages the distribution of a user's own contact information. In essence, a user fills out a Personal Contact Card, which includes all the information a user wishes to store about himself or herself. Because systems that are supporting the CAB Enabler are likely supporting multiple users, the CAB Enabler also defines a search paradigm that permits other users to query those systems to locate information about the available users. The CAB Enabler supports many different types of information. It therefore has a data model that is flexible and extensible. It manages traditional types of contact information (such as name, address, email, phone number, mobile number) as well as new types of information (such as websites, blogs, presence subscription references). 1.2. Terminology Used in This Document Syntax specifications shown here use the augmented Backus-Naur Form (ABNF) as described in [RFC5234] and are specified as in the base vCard specification [RFC6350]. 2. vCard Extensions: Properties The following sections define the CAB Properties. Note: Some string-value vCard properties are defined herein for which no specific list of allowed strings is specified. For those properties, it is intended that de facto taxonomies might develop. One vCard can, for example, specify a hobby of "philately", while another uses "stamp collecting", and a third has "old postage stamps". Usage, not specification, may lead to a preference over time for a single term. In general, these are meant to be understood by humans, rather than to be used for automated categorization that might require standard terms and registries. 2.1. Property: EXPERTISE Namespace: Property name: EXPERTISE Purpose: To specify a field of expertise for the object to which the vCard refers. Value type: A single text value. Cauchie, et al. Standards Track [Page 3]
RFC 6715 vCard-OMA-CAB August 2012 Cardinality: * Property parameters: LEVEL (possible values: "beginner", "average", "expert"), INDEX Description: This is intended to be a free-form naming of fields of expertise, meant for human consumption, and no specific expertise fields are defined. See the note at the beginning of Section 2. Format definition: EXPERTISE-param = LEVEL-param / INDEX-param / language-param / pref-param / altid-param / type-param / any-param EXPERTISE-value = text Examples: EXPERTISE;LEVEL=beginner;INDEX=2:chinese literature EXPERTISE;INDEX=1;LEVEL=expert:chemistry 2.2. Property: HOBBY Namespace: Property name: HOBBY Purpose: To specify the hobbies of the object to which the vCard refers. Value type: A single text value. Cardinality: * Property parameters: LEVEL (possible values: "high", "medium", "low"), INDEX Description: This is intended to be a free-form naming of hobbies, meant for human consumption, and no specific hobbies are defined. See the note at the beginning of Section 2. Cauchie, et al. Standards Track [Page 4]
RFC 6715 vCard-OMA-CAB August 2012 A hobby, as opposed to an interest (see Section 2.3), is an activity that one actively engages in for entertainment, intellectual stimulation, creative expression, or the like. * "Art" might be a hobby if one actively sculpts or paints. * "Tennis" might be a hobby if one enjoys playing, rather than just watching, matches. Format definition: HOBBY-param = LEVEL-param / INDEX-param / language-param / pref-param / altid-param / type-param / any-param HOBBY-value = text Examples: HOBBY;INDEX=1;LEVEL=high:reading HOBBY;INDEX=2;LEVEL=high:sewing 2.3. Property: INTEREST Namespace: Property name: INTEREST Purpose: To specify the interest(s) of the object to which the vCard refers. Value type: A single text value Cardinality: * Property parameters: LEVEL (possible values: "high", "medium", "low"), INDEX Description: This is intended to be a free-form naming of interests, meant for human consumption, and no specific interests are defined. See the note at the beginning of Section 2. An interest, as opposed to a hobby (see Section 2.2), is an activity or topic that one finds interesting but doesn't necessarily actively engage in. Cauchie, et al. Standards Track [Page 5]
RFC 6715 vCard-OMA-CAB August 2012 * "Art" might be an interest if one likes looking at art but doesn't create art. * "Tennis" might be an interest if one enjoys watching matches but doesn't play. Format definition: INTEREST-param = LEVEL-param / INDEX-param / language-param / pref-param / altid-param / type-param / any-param INTEREST-value = text Examples: INTEREST;INDEX=1;LEVEL=medium:r&b music INTEREST;INDEX=2;LEVEL=high:rock 'n' roll music 2.4. Property: ORG-DIRECTORY Namespace: Property name: ORG-DIRECTORY Purpose: To specify a directory of an organization to which the vCard's entity belongs. Value type: A single URI value. Cardinality: * Property parameters: PREF, INDEX Description: This is intended to be a URI that can be used to do an organization-directory lookup. Presumably, the entity the vCard represents would be found in the directory, though that isn't required. This might be used to make it easier to find someone's coworkers, management chain, and so on, in a company or organizational directory. How the lookup is done depends upon the URI scheme, and no attempt is made here to specify details of the lookup mechanism. An HTTP URI might, for example, lead Cauchie, et al. Standards Track [Page 6]
RFC 6715 vCard-OMA-CAB August 2012 to a web form that's intended for manual lookup in a browser; thus, this URI might or might not be usable for automated lookup or searching. Format definition: ORG-DIRECTORY-param = pref-param / INDEX-param / language-param / pid-param / pref-param / altid-param / type-param / any-param ORG-DIRECTORY-value= uri Examples: ORG-DIRECTORY;INDEX=1:http://directory.mycompany.example.com ORG-DIRECTORY;PREF=1:ldap://ldap.tech.example/ o=Example%20Tech,ou=Engineering 3. vCard Extensions: Parameters The following sections define Parameters used within Properties definitions. 3.1. Parameter: INDEX Namespace: Parameter name: INDEX Purpose: Used in a multi-valued property to indicate the position of this value within the set of values. Description: When a property is multi-valued, INDEX can be used to indicate an ordering or sequence of the values. INDEX values must be strictly positive. Zero is not allowed. Format definition: INDEX-param = "INDEX=" INDEX-value INDEX-value = integer Examples: ORG-URI;INDEX=1:http://mycompany.example1.com ORG-URI;PREF=1;INDEX=2:http://mycompany.example2.com Cauchie, et al. Standards Track [Page 7]
RFC 6715 vCard-OMA-CAB August 2012 3.2. Parameter: LEVEL Namespace: Parameter name: LEVEL Purpose: Used to indicate a level of expertise, hobby, or interest attained by the object the vCard represents. Description: Allowable values: * "beginner", "average", "expert" when used with EXPERTISE * "high", "medium", "low" when used with HOBBY or INTEREST Format definition: LEVEL-param = "LEVEL=" LEVEL-value LEVEL-value = "beginner" / "average" / "expert" / "high" / "medium" / "low" Examples: EXPERTISE;LEVEL=beginner:chinese literature HOBBY;LEVEL=high:reading INTEREST;LEVEL=medium:r&b music 4. Security Considerations This document presents no security considerations beyond those in Section 9 of the base vCard specification [RFC6350]. Cauchie, et al. Standards Track [Page 8]
RFC 6715 vCard-OMA-CAB August 2012 5. IANA Considerations IANA has added the following entries to the "vCard Properties" registry, defined in [RFC6350] Section 10.3.1. +-------+------------------------+------------------------+ | Name- | | | | space | Property | Reference | +-------+------------------------+------------------------+ | | EXPERTISE | RFC 6715, Section 2.1 | | | HOBBY | RFC 6715, Section 2.2 | | | INTEREST | RFC 6715, Section 2.3 | | | ORG-URI | RFC 6715, Section 2.4 | +-------+------------------------+------------------------+ IANA has added the following entries to the "vCard Parameters" registry, defined in [RFC6350] Section 10.3.2. +-------+------------------------+------------------------+ | Name- | | | | space | Parameter | Reference | +-------+------------------------+------------------------+ | | INDEX | RFC 6715, Section 3.1 | | | LEVEL | RFC 6715, Section 3.2 | +-------+------------------------+------------------------+ IANA has added the following entries to the "vCard Parameter Values" registry, defined in [RFC6350] Section 10.3.4. +-----------+-----------+---------------+------------------------+ | Property | Parameter | Value | Reference | +-----------+-----------+---------------+------------------------+ | EXPERTISE | LEVEL | beginner | RFC 6715, Section 3.2 | | EXPERTISE | LEVEL | average | RFC 6715, Section 3.2 | | EXPERTISE | LEVEL | expert | RFC 6715, Section 3.2 | | HOBBY | LEVEL | high | RFC 6715, Section 3.2 | | HOBBY | LEVEL | medium | RFC 6715, Section 3.2 | | HOBBY | LEVEL | low | RFC 6715, Section 3.2 | | INTEREST | LEVEL | high | RFC 6715, Section 3.2 | | INTEREST | LEVEL | medium | RFC 6715, Section 3.2 | | INTEREST | LEVEL | low | RFC 6715, Section 3.2 | +-----------+---------------------------+------------------------+ 6. Acknowledgments Thanks to Simon Perreault, Peter Saint-Andre, Cyrus Daboo, and Chris Newman for particularly thorough reviews, which led to a much cleaner submission to the working group. Cauchie, et al. Standards Track [Page 9]
RFC 6715 vCard-OMA-CAB August 2012 7. References 7.1. Normative References [RFC5234] Crocker, D., Ed., and P. Overell, "Augmented BNF for Syntax Specifications: ABNF", STD 68, RFC 5234, January 2008. [RFC6350] Perreault, S., "vCard Format Specification", RFC 6350, August 2011. 7.2. Informative References [OMA-CAB] Open Mobile Alliance, "Converged Address Book (CAB) Specification", October 2010, <http:// www.openmobilealliance.org/Technical/release_program/docs/ CopyrightClick.aspx?pck=CAB&file=V1_0-20101019-C/ OMA-TS-CAB-V1_0-20101019-C.pdf>. Candidate Version 1.0, OMA-TS-CAB-V1_0-20101019-C [OMA-DS] Open Mobile Alliance, "DS Protocol", March 2009, <http:// www.openmobilealliance.org/Technical/release_program/docs/ copyrightclick.aspx?pck=DS&file=V1_2_2-20090319-A/ OMA-TS-DS_Protocol-V1_2_2-20090319-A.pdf>. Cauchie, et al. Standards Track [Page 10]
RFC 6715 vCard-OMA-CAB August 2012 Authors' Addresses Dany Cauchie France Telecom - Orange 2 Avenue Pierre Marzin Lannion 22307 France Phone: +33 2 96 05 31 16 EMail: dany.cauchie@orange.com Barry Leiba Huawei Technologies Phone: +1 646 827 0648 EMail: barryleiba@computer.org URI: http://internetmessagingtechnology.org/ Kepeng Li Huawei Technologies Phone: +86 755 28974289 EMail: likepeng@huawei.com Cauchie, et al. Standards Track [Page 11]
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