• CCITT Rec. T.4 (11/1988) – STANDARDIZATION OF GROUP 3 FACSIMILE APPARATUS FOR DOCUMENT TRANSMISSION
  • 1 Scanning track
  • 2 Dimensions of apparatus
  • 3 Transmission time per total coded scan line
  • 4 Coding scheme
    • 4.1 One-dimensional coding scheme
    • 4.2 Two-dimensional coding scheme
    • 4.3 Error limiting mode
  • 5 Modulation and demodulation
  • 6 Power at the transmitter output
  • 7 Power at the receiver input
  • 8 Implementation of apparatus
  • 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 – Interworking between equipments with A5/A6 and A4 facilities ...
  • APPENDIX I – Guaranteed reproducible area for Group 3 apparatus conforming to Recommendation T.4