Request for comments regarding draft-mccobb-xv-media-type-00

This is a request for comments regarding
the internet draft 
draft-mccobb-xv-media-type-00 for media
type "application/xv+xml".
This media type is for XHTML+Voice
documents.  The XHTML+Voice specification
is located at http://www.voicexml.org/specs/multimodal/x+v/12/
.






Network Working Group    
                     
               G. McCobb
Internet-Draft      
                     
              IBM Corporation
Expires: January 27, 2006    
                     
       July 26, 2005


         
          XHTML+Voice - application/xv+xml
         
           draft-mccobb-xv-media-type-00

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Copyright Notice

   Copyright (C) The Internet
Society (2005).

Abstract

   This document describes
the registration of the MIME sub-type
   application/xv+xml.  This
sub-type is intended for use as a media
   descriptor for XHTML+Voice
multimodal language documents.  The XHTML+
   Voice 1.2 language specification
is maintained by the VoiceXML Forum
   at <http://www.voicexml.org/specs/multimodal/x+v/12/>.







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1.  Conventions used in this document

   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 BCP 14, RFC 2119 [1].

2.  Introduction

   XHTML+Voice is a member
of the XHTML family of document types, as
   specified by XHTML Modularization
[6].  XHTML+Voice extends XHTML 1.1
   [7] with a modularized
subset of VoiceXML 2.0 [11], XML Events [9],
   and a few extensions to
both XHTML and VoiceXML 2.0.  XHTML 1.1,
   VoiceXML 2.0 and XML Events
are W3C Recommendations.

   The language integration
defined by XHTML+Voice supports all modules
   defined by XHTML Modularization,
and adds voice interaction to XHTML
   elements to enable multimodal
applications.  The defined document
   type for XHTML+Voice is
XHTML Host language document type conformant.

   XHTML+Voice 1.2 [10] is
maintained by the VoiceXML Forum, at URI
   location <http://www.voicexml.org/specs/multimodal/x+v/12/>.

2.1  application/xv+xml Usage

   The application/xv+xml
media type is intended to be a media
   descriptor for XHTML+Voice
multimodal documents.  It is used to
   inform applications that
additional markup for running a voice
   browser component and
activating handlers for DOM Level 2 events via
   XML Events [9] can be
processed.

   This media type registration
is not intended for e-mail usage.

3.  IANA Registration

      To: ietf-types@xxxxxxxx
      Subject: Registration
of MIME media type
         
     application/xv+xml

      MIME media type
name: application

      MIME subtype name:
xv+xml

      Required parameters:
none

      Optional parameters:

      charset: has the
same semantics as the charset parameter of the
      "application/xml"
media type specified in [3].




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   Encoding considerations:

      XHTML+Voice has
the same media type encoding considerations
      specified in section
3.2 of [3].

   Security considerations:

      XHTML+Voice is
an extension of XHTML and has the same security
      issues as XHTML.
 These include interpreting anchors and forms in
      XHTML documents,
and scripting languages and other dynamic
      interactive capabilities.
 See section 7 of [4].

      In addition, the
scripting language can be accessed by both the
      XHTML and the
VoiceXML 2.0 markup embedded in the XHTML+Voice
      document.  See
section 1.3.1.5 of [10].

      XML-Events [9]
allows an author to attach a handler to any node in
      the document.
 The handler that is activated in response to a
      specified event
may be either a voice dialog or a script that can
      be either in the
same or an external document.

   Interoperability considerations:

      Because XHTML+Voice
is built upon W3C standard recommendations, it
      is designed to
be interoperable across a wide range of platforms
      and client devices.
 Because the extensions to XHTML are
      identified by
their namespaces, all browsers that have namespace
      support can run
an XHTML+Voice document as an XHTML document
      without voice
interaction.

   Published specification:

      The latest published
version of XHTML+Voice is [10].

   Applications which use
this media type:

      XHTML+Voice documents
are intended to be deployed on the World
      Wide Web and rendered
by multimodal browsers that support the
      visual and voice
modes of interaction.  Because XHTML+Voice is an
      application of
XML, authors can expect XHTML+Voice user agents to
      be conformant
XML 1.0 [5] processors.  See section 2 of [4].

   Additional information:

      Magic number(s):
 There is no single string that is always
      present.

      File extension(s):
 mxml, xhvml, xvml, xvm

      Macintosh File
Type Code(s):  TEXT


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   Person & e-mail address
to contact for further information:

      Gerald McCobb
      mccobb@xxxxxxxxxx

   Intended usage:  LIMITED
USE

   Author/Change controller:
 Gerald McCobb

   Further information:





4.  Fragment Identifiers

   See section 3 of [4].
 Following [4], fragment identifiers for XHTML+
   Voice documents designate
the element with the corresponding ID
   attribute value (see [5]
section 3.3.1).

   While XHTML+Voice adds
new ID attributes with fragment identifier
   namespaces that are not
in the same namespace as XHTML, uniqueness of
   the ID attribute values
is preserved within the document.  See
   sections 1.3.1 and 5.3
of [10].

5.  Recognizing XHTML+Voice files

   Because XHTML+Voice is
XML, an XHTML+Voice document [optionally]
   starts with an XML declaration
which begins with "<?xml" and has a
   DOCTYPE declaration "<!DOCTYPE
html".  XHTML+Voice 1.2 has the
   following DOCTYPE declaration:

   <!DOCTYPE html PUBLIC
"-//VoiceXML Forum//DTD XHTML+Voice 1.2//EN"
   "http://www.voicexml.org/specs/multimodal/x+v/12/dtd/xhtml+voice12.dtd">

   Because XHTML+Voice is
in the XHTML family of languages, the root
   element of an XHTML+Voice
document is 'html' and '<html' can be found
   near the top of the document.

6.  Security Considerations

   Security considerations
for this media type are discussed in the MIME
   type registration that
appears in section 3.








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7.  IANA Considerations

   As described in Section
3, this document specifies the registration
   of a MIME type for XHTML+Voice
documents according to [3].

8.  Normative References

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

   [2]   Berners-Lee,
T., Fielding, R., and L. Masinter, "Uniform
         Resource
Identifiers (URI): Generic Syntax", RFC 2396,
         August
1998.

   [3]   Murata, M.,
St. Laurent, S., and D. Kohn, "XML Media Types",
         RFC
3023, January 2001.

   [4]   Baker, M. and
P. Stark, "The 'application/xhtml+xml' Media
         Type",
RFC 3236, January 2002.

   [5]   Bray, T. and
others, "Extensible Markup Language (XML) 1.0, W3C
         Recommendation,
http://www.w3.org/TR/REC-xml", February 2004.

   [6]   Dooley, S.
and others, "Modularization of XHTML, W3C
         Recommendation,
http://www.w3.org/TR/xhtml-modularization",
         April
2001.

   [7]   Altheim, M.
and S. McCarron, "XHTML 1.1 - Module-based XHTML,
         W3C
Recommendation, http://www.w3.org/TR/xhtml11/", May 2001.

   [8]   Pixley, T.,
"Document Object Model Level 2 Events
         Specification,
W3C Recommendation,
         http://www.w3.org/TR/DOM-Level-2-Events/",
November 2000.

   [9]   Pemberton,
S., Raman, T., and S. McCarron, "XML Events - An
         events
syntax for XML, W3C Recommendation,
         http://www.w3.org/TR/xml-events/",
January 2002.

   [10]  Axelsson, J.
and others, "XHTML+Voice Profile 1.2,
         http://www.voicexml.org/specs/multimodal/x+v/12/",
March 2004.

   [11]  McGlashan,
S. and others, "Voice Extensible Markup Language
         (VoiceXML),
W3C Recommendation,
         http://www.w3.org/TR/voicexml20/",
March 2004.








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Author's Address

   Gerald McCobb
   International Business
Machines Corporation
   8051 Congress Ave.
   Boca Raton, FL  33487
   USA

   Phone: +1 561 862 2109
   Email: mccobb@xxxxxxxxxx


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Copyright Statement

   Copyright (C) The Internet
Society (2005).  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

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function is currently provided by the
   Internet Society.




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Regards,
Gerald McCobb
IBM
8051 Congress Avenue
Boca Raton, FL 33487
Tel. # 561-862-2109 T/L 975-2109