Internet Engineering Task Force                                T. Hansen
Internet-Draft                                         AT&T Laboratories
Updates: RFC 3458 (if approved)                            June 23, 2004
Expires: December 22, 2004


                     Video-Message Message-Context
             draft-hansen-lemonade-msgctxt-videomsg-01.txt

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   Copyright (C) The Internet Society (2004).  All Rights Reserved.

Abstract

   The Message-Context header defined in RFC 3458 [1] describes the
   context of a message (for example: fax-message or voice-message).
   This specification extends the Message-Context header with one
   additional context value: "video-message".

   A receiving user agent (UA) may use this information as a hint to
   optimally present the message.

Note



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   This document is being discussed in the LEMONADE and VPIM working
   group mailing lists, lemonade@ietf.org and vpim@ietf.org.

.  Introduction

   Email messages can be used to convey many different forms of
   messages, and the user will interact with different types in
   different ways.  As explained in RFC 3458 [1], the "message context"
   of the message conveys information about the way the user expects to
   interact with the message, such as which icon to display.  RFC 3458
   then registers the message contexts for a "voice-message",
   "fax-message", "pager-message", "multimedia-message", "text-message"
   and "none".

1.1  Changes from version 00

   The description of RFC 3458 in the Introduction was shortened.

.  Video Message

   One form of email is a message that consists mostly of a video
   stream.  Examples of services that send video email are those
   connected to cell phones that capture video streams, and video email
   services that use webcams attached to a PC.  These email messages
   currently consist of two flavors, both of which can be properly
   considered to be a video message:

   1.  those that embed the video stream internally within the message
       as a body part, and

   2.  those whose video stream is stored on a 3rd party's video server.

   However, none of the existing message contexts properly identify such
   video messages.  This specification extends the Message-Context
   header with one additional context value: video-message.

.  IANA Considerations

3.1  Message-Context

   As specified in RFC 3458 [1], this document registers "video-message"
   in the "Internet Message Context Types" repository.

   Message-Context class name:
      video-message






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   Sumary of the message class:
      Indicates a message whose primary content is a video mail message.
      The primary content is video data.  The context is usually a
      message recorded using a video camera, or a message whose primary
      purpose is to contain an external reference to a message recorded
      using a video camera.

   Person & email address to contact for further information:
      Tony Hansen, tony+msgctxt@maillennium.att.com.


.  Security Considerations

   The intention for this header is to be an indicator of message
   context only.  As such, it is only a hint and requires no behavior on
   the part of a message user agent.

  Normative References

   []  Burger, E., Candell, E., Eliot, C. and G. Klyne, "Message
        Context for Internet Mail", RFC 3458, January 2003.


Author's Address

   Tony Hansen
   AT&T Laboratories
   200 Laurel Ave.
   Middletown, NJ  07748
   USA

   EMail: tony+msgctxt@maillennium.att.com



















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