Rec. ITU-T T.4 (03/1993) … STANDARDIZATION OF GROUP 3 FACSIMILE APPARATUS FOR DOCUMENT TRANSMISSION
FOREWORD
CONTENTS
1 Scanning track
2 Dimensions of apparatus
3 Transmission time per total coded scan line
    3.3 Error correction mode
4 Coding scheme
    4.1 One-dimensional coding scheme
    4.2 Two-dimensional coding scheme
    4.3 Extended two-dimensional coding scheme
    4.4 Error limiting mode
5 Modulation and demodulation
6 Power at the transmitter output
7 Power at the receiver input
8 Implementation of apparatus
9 File transfer for group 3
10 Character mode of group 3
11 Mixed mode for group 3
12 64 kbit/s option for group 3
Annex A … Optional error correction mode
A.1 Introduction
A.2 Definitions
A.3 Message format
Annex B … Optional error limiting mode
B.1 Data
B.2 End of line (EOL)
B.3 Fill
B.4 Return to control (RTC)
Annex C … Optional file transfer for group 3
C.1 Introduction
C.2 Definitions
C.3 Normative references
C.4 Definition of the different file transfer modes
C.5 Coding of the file description
C.6 Message format … Blocks structure
C.7 Protocol aspects
Annex D … Optional character mode of group 3
D.1 Introduction
D.2 Definitions
D.3 Normative references
D.4 Graphic character set … Repertoire and coding
D.5 Page format
D.6 Control functions
D.7 Message format … Blocks structure
D.8 Protocol aspects
D.9 Imaging process
Annex E … Optional mixed mode for group 3
E.1 Introduction
E.2 Definitions
E.3 Facsimile control field (FCF)
E.4 Frame numbering
E.5 Facsimile data field
E.6 Character coded data field
E.7 Graphic character set
E.8 Page format
E.9 Control functions
E.10 End of retransmission (EOR)
Annex F … 64 kbit/s option of facsimile group 3 [G3 (UDI)]
F.1 Introduction
F.2 Terminal characteristics for G3 (UDI)
F.3 Protocol set
F.4 Basic procedure for the interchange of G3-64 kbit/s option facsimile document
F.5 Interworking
Appendix I … Guaranteed reproducible area for group 3 apparatus conforming to Recommendation T.4
Appendix II … Repertoire of box-drawing characters for character mode of group 3 apparatus