File Format for Internet Fax
RFC 3949

 
Document Type RFC - Draft Standard (February 2005; No errata)
Obsoletes RFC 2301
Last updated 2013-03-02
Stream IETF
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Stream WG state (None)
Consensus Unknown
Document shepherd No shepherd assigned
IESG IESG state RFC 3949 (Draft Standard)
Telechat date
Responsible AD Scott Hollenbeck
Send notices to <Claudio.Allocchio@garr.it>, <tamura@toda.ricoh.co.jp>
Network Working Group                                         R. Buckley
Request for Comments: 3949                                    D. Venable
Obsoletes: 2301                                        Xerox Corporation
Category: Standards Track                                    L. McIntyre
                                                              Consultant
                                                              G. Parsons
                                                         Nortel Networks
                                                             J. Rafferty
                                                              Brooktrout
                                                           February 2005

                      File Format for Internet Fax

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2005).

Abstract

   This document is a revised version of RFC 2301.  The revisions,
   summarized in the list attached as Annex B, are based on discussions
   and suggestions for improvements that have been made since RFC 2301
   was issued in March 1998, and on the results of independent
   implementations and interoperability testing.

   This RFC 2301 revision describes the Tag Image File Format (TIFF)
   representation of image data specified by the International
   Telecommunication Union (ITU-T) Recommendations for black-and-white
   and color facsimile.  This file format specification is commonly
   known as TIFF for Fax eXtended (TIFF-FX).  It formally defines
   minimal, extended, and lossless Joint Bi-level Image experts Group
   (JBIG) profiles (Profiles S, F, J) for black-and-white fax and base
   JPEG, lossless JBIG, and Mixed Raster Content profiles (Profiles C,
   L, M) for color and grayscale fax.  These profiles correspond to the
   content of the applicable ITU-T Recommendations.

Buckley, et al.             Standards Track                     [Page 1]
RFC 3949              File Format for Internet Fax         February 2005

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
       1.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . .  5
       1.2. Approach. . . . . . . . . . . . . . . . . . . . . . . . .  5
       1.3. Overview of this Document . . . . . . . . . . . . . . . .  5
   2.  TIFF and Fax . . . . . . . . . . . . . . . . . . . . . . . . .  7
       2.1. TIFF Overview . . . . . . . . . . . . . . . . . . . . . .  7
            2.1.1. File Structure . . . . . . . . . . . . . . . . . .  8
            2.1.2. Image Structure. . . . . . . . . . . . . . . . . . 10
            2.1.3. TIFF File Structure for Fax Applications . . . . . 11
       2.2. TIFF Fields for All Fax Applications. . . . . . . . . . . 12
            2.2.1. TIFF Fields required for all fax profiles. . . . . 13
            2.2.2. Additional TIFF Fields required for all fax
                   profiles . . . . . . . . . . . . . . . . . . . . . 14
            2.2.3. TIFF Fields recommended for all fax profiles . . . 17
            2.2.4. New TIFF Fields recommended for fax profiles . . . 18
   3.  Profile S: Minimal Black-and-White Fax Profile . . . . . . . . 20
       3.1. Overview. . . . . . . . . . . . . . . . . . . . . . . . . 20
       3.2. Required TIFF Fields. . . . . . . . . . . . . . . . . . . 21
            3.2.1. Baseline Fields. . . . . . . . . . . . . . . . . . 21
            3.2.2. Extension Fields . . . . . . . . . . . . . . . . . 23
            3.2.3. New Fields . . . . . . . . . . . . . . . . . . . . 23
       3.3. Recommended TIFF Fields . . . . . . . . . . . . . . . . . 23
       3.4. End of Line (EOL) and Return to Control (RTC) . . . . . . 23
            3.4.1. RTC Exclusion. . . . . . . . . . . . . . . . . . . 24
       3.5. File Structure. . . . . . . . . . . . . . . . . . . . . . 24
       3.6. Profile S: Minimal Black-and-White Profile Summary. . . . 26
   4.  Profile F: Extended Black-and-White Fax Profile. . . . . . . . 27
       4.1. TIFF-F Overview . . . . . . . . . . . . . . . . . . . . . 28
       4.2. Required TIFF Fields. . . . . . . . . . . . . . . . . . . 29
            4.2.1. Baseline Fields. . . . . . . . . . . . . . . . . . 29
            4.2.2. Extension Fields . . . . . . . . . . . . . . . . . 32
            4.2.3. New Fields . . . . . . . . . . . . . . . . . . . . 32
       4.3. Recommended TIFF Fields . . . . . . . . . . . . . . . . . 32
            4.3.1. Baseline Fields. . . . . . . . . . . . . . . . . . 32
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