[Docs] [txt|pdf] [Tracker] [Email] [Diff1] [Diff2] [Nits]

Versions: 00 01 02 03 04 05 06 07 08 RFC 4770

Network Working Group                                        C. Jennings
Internet-Draft                                             Cisco Systems
Expires: September 5, 2006                                 March 4, 2006


              vCard Extensions for Instant Messaging (IM)
                      draft-jennings-impp-vcard-06

Status of this Memo

   By submitting this Internet-Draft, each author represents that any
   applicable patent or other IPR claims of which he or she is aware
   have been or will be disclosed, and any of which he or she becomes
   aware will be disclosed, in accordance with Section 6 of BCP 79.

   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.

   This Internet-Draft will expire on September 5, 2006.

Copyright Notice

   Copyright (C) The Internet Society (2006).

Abstract

   This document describes an extension to vCard to support Instant
   Messaging (IM) and Presence Protocol (PP) applications.  IM and PP
   are becoming increasingly common ways of communicating, and users
   want to save this contact information in their address books.  This
   draft allows a URI that is associated with IM or PP to be specified
   inside of a vCard.






Jennings                Expires September 5, 2006               [Page 1]


Internet-Draft                 IMPP vCard                     March 2006


1.  Conventions

   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 [3].


2.  Overview

   As more and more people use various instant messaging (IM) and
   presence protocol (PP) applications, it becomes important for them to
   be able to share this contact address information along with the rest
   of their contact information.  RFC 2425 [1] and RFC 2426 [2] define a
   standard format for this information, which is referred to as vCard.
   This document defines a new type in a vCard for representing instant
   IM and PP URIs.  It is very similar to existing types for
   representing email address and telephone contact information.

   The type entry to hold this new contact information is an IMPP type.
   The IMPP entry has a single URI that indicates the address of a
   service that provides IM, PP, or both.  Also defined are some
   parameters that give hints as to when certain URIs would be
   appropriate.  A given vCard can have multiple IMPP entries, but each
   entry can contain only one URI.  Each IMPP entry can contain multiple
   parameters.  Any combination of parameters is valid, although a
   parameter should occur at most once in a given IMPP entry.

   The type of URI indicates what protocols might be usable for
   accessing it, but this document does not define any of the types.
   For example a URI type of

      "sip"[6] indicates to use SIP/SIMPLE,
      "xmpp"[7] indicates to use XMPP,
      "irc"[5] indicates to use IRC,
      "ymsgr" indicates to use yahoo,
      "msn" might indicate to use Microsoft messenger,
      "aim" indicates to use AOL, and
      "im"[9] or "pres"[8] indicates to use a CPIM or CPP gateway.

   The normative definition of this new vCard type is given in
   Section 3, and an informational ABNF is provided in Section 4.


3.  IANA Considerations

   The required email to define this extension (as defined in RFC2425)
   was sent on October 29, 2004 to the ietf-mime-direct@imc.org mailing
   list with the subject "Registration of text/directory MIME type



Jennings                Expires September 5, 2006               [Page 2]


Internet-Draft                 IMPP vCard                     March 2006


   IMPP".

   This specification updates the "text/directory MIME Types"
   subregistry in the "text/directory MIME Registrations" registry at
   http://www.iana.org/assignments/text-directory-registrations with the
   following information:

   Type name: IMPP

   Type purpose: To specify the URI for instant messaging and presence
   protocol communications with the object the vCard represents.

   Type encoding: 8bit

   Type value: A single URI.  The type of the URI indicates the protocol
   that can be used for this contact.

   Type special notes: The type can include the type parameter "TYPE" to
   specify an intended use for the URI.  The TYPE parameter values can
   include:

   o  An indication of the type of communication for which this URI is
      appropriate.  This can be a value of PERSONAL or BUSINESS.
   o  An indication of the location of a device associated with this
      URI.  Values can be HOME, WORK, or MOBILE.
   o  The value PREF indicates this is a preferred address and has the
      same semantics as the PREF value in a TEL type.

   Additional information can be found in RFCAAAA.

   Intended usage: COMMON

   [Note to IANA: Please replace AAAA with the RFC number for this
   specification.]


4.  Formal Grammar

   The following ABNF grammar [4] extends the grammar found in RFC 2425
   [1] and RFC 2426 [2].











Jennings                Expires September 5, 2006               [Page 3]


Internet-Draft                 IMPP vCard                     March 2006


   ;For name="IMPP"
    param      = impp-param ; Only impp parameters are allowed

    value      = uri

    impp-param = "TYPE" "=" impp-type *("," impp-type)

    impp-type  = "PERSONAL" / "BUSINESS" / ; purpose of communications
                 "HOME" / "WORK" / "MOBILE" /
                 "PREF" /
                 iana-token / x-name;
                 ; Values are case insensitive


5.  Example


   BEGIN:vCard
   VERSION:3.0
   FN:Alice Doe
   IMPP;TYPE=personal,pref:im:alice@example.com
   END:vCard


6.  Security Considerations

   This does not introduce additional security issues beyond the current
   vCard specification.  It is worth noting that many people consider
   their presence information more sensitive than other address
   information.  Any system that stores or transfers vCards needs to
   carefully consider the privacy issues around this information.


7.  Acknowledgments

   Thanks to Paul Hoffman, Sam Roberts and Pekka Pessi for their
   comments.


8.  References

8.1.  Normative References

   [1]  Howes, T., Smith, M., and F. Dawson, "A MIME -- --Content-Type
        for Directory Information", RFC 2425, September 1998.

   [2]  Dawson, F. and T. Howes, "vCard MIME Directory Profile",
        RFC 2426, September 1998.



Jennings                Expires September 5, 2006               [Page 4]


Internet-Draft                 IMPP vCard                     March 2006


   [3]  Bradner, S., "Key words for use in RFCs to Indicate Requirement
        Levels", BCP 14, RFC 2119, March 1997.

8.2.  Informational References

   [4]  Crocker, D. and P. Overell, "Augmented BNF for Syntax
        Specifications: ABNF", RFC 2234, November 1997.

   [5]  Butcher, S., "Uniform Resource Locator Schemes for Internet
        Relay Chat Entities", draft-butcher-irc-url-04 (work in
        progress), January 2004.

   [6]  Rosenberg, J., Schulzrinne, H., Camarillo, G., Johnston, A.,
        Peterson, J., Sparks, R., Handley, M., and E. Schooler, "SIP:
        Session Initiation Protocol", RFC 3261, June 2002.

   [7]  Saint-Andre, P., "XMPP URI Format", draft-saintandre-xmpp-uri-08
        (work in progress), December 2004.

   [8]  Peterson, J., "Common Profile for Presence (CPP)", RFC 3859,
        August 2004.

   [9]  Peterson, J., "Common Profile for Instant Messaging (CPIM)",
        RFC 3860, August 2004.



























Jennings                Expires September 5, 2006               [Page 5]


Internet-Draft                 IMPP vCard                     March 2006


Author's Address

   Cullen Jennings
   Cisco Systems
   170 West Tasman Drive
   MS: SJC-21/2
   San Jose, CA  95134
   USA

   Phone: +1 408 902-3341
   Email: fluffy@cisco.com








































Jennings                Expires September 5, 2006               [Page 6]


Internet-Draft                 IMPP vCard                     March 2006


Intellectual Property Statement

   The IETF takes no position regarding the validity or scope of any
   Intellectual Property Rights or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
   this document or the extent to which any license under such rights
   might or might not be available; nor does it represent that it has
   made any independent effort to identify any such rights.  Information
   on the procedures with respect to rights in RFC documents can be
   found in BCP 78 and BCP 79.

   Copies of IPR disclosures made to the IETF Secretariat and any
   assurances of licenses to be made available, or the result of an
   attempt made to obtain a general license or permission for the use of
   such proprietary rights by implementers or users of this
   specification can be obtained from the IETF on-line IPR repository at
   http://www.ietf.org/ipr.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights that may cover technology that may be required to implement
   this standard.  Please address the information to the IETF at
   ietf-ipr@ietf.org.


Disclaimer of Validity

   This document and the information contained herein are provided on an
   "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
   OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
   ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED,
   INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
   INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
   WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.


Copyright Statement

   Copyright (C) The Internet Society (2006).  This document is subject
   to the rights, licenses and restrictions contained in BCP 78, and
   except as set forth therein, the authors retain all their rights.


Acknowledgment

   Funding for the RFC Editor function is currently provided by the
   Internet Society.




Jennings                Expires September 5, 2006               [Page 7]


Html markup produced by rfcmarkup 1.129d, available from https://tools.ietf.org/tools/rfcmarkup/