RFC 1494 (rfc1494) - Page 1 of 19

Equivalences between 1988 X

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Network Working Group                                      H. Alvestrand
Request for Comments: 1494                                  SINTEF DELAB
                                                             S. Thompson
                                                       Soft*Switch, Inc.
                                                             August 1993

       Equivalences between 1988 X.400 and RFC-822 Message Bodies

Status of this Memo

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

Table of Contents

   1.  Introduction .............................................    2
   2.  Equivalence Table Definition .............................    2
   3.  Generic conversions ......................................    3
   3.1.  Byte copy ..............................................    3
   3.2.  Text Conversion ........................................    3
   3.3.  Image Conversion .......................................    3
   3.4.  Tunneling ..............................................    3
   4.  Conversion Table for known X.400 and MIME  Types .........    4
   4.1.  MIME to X.400 Table ....................................    4
   4.2.  X.400 to MIME Table ....................................    4
   5.  Newly defined X.400 Body Parts ...........................    5
   5.1.  Use of OBJECT IDENTIFIERs and ASN.1 MACROS .............    5
   5.2.  The Generic MIME Extended Body Part ....................    6
   5.3.  The PostScript body part ...............................    7
   5.4.  The JPEG body part .....................................    7
   5.5.  The GIF body part ......................................    8
   6.  Newly defined MIME content-types .........................    8
   6.1.  The application/x400-bp content-type ...................    8
   6.2.  The image/g3fax content-type ...........................    9
   6.2.1.  G3Fax Parameters .....................................    9
   6.2.2.  Content Encoding .....................................   10
   6.3.  The Application/ODA content-type .......................   11
   7. Equivalence Definitions ...................................   11
   7.1. IA5Text - text/plain ....................................   11
   7.2. GeneralText - text/plain (ISO-8859) .....................   12
   7.3. BilaterallyDefined -  application/octet-stream ..........   13
   7.4. ODA - application/oda ...................................   14
   7.5. g3-facsimile - image/g3fax ..............................   15
   7.6. application/postscript -  postscript-body-part ..........   16
   7.7. application/jpeg - jpeg-body-part .......................   16



Alvestrand & Thompson
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