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KX-FP206CX/KX-FP218CX
6.6.
Modem Section
6.6.1.
Function
The unit uses a 1 chip modem (IC505) that serves as an interface between the control section for FAX transmission and recep-
tion and the telephone line. During a transmitting operation, the digital image signals are modulated and sent to the telephone
line.
During a receiving operation, the analogue image signals which are received via the telephone line are demodulated and con-
verted into digital image signals. The communication format and procedures for FAX communication are standardized by ITU-T.
This 1 chip modem (IC505) has hardware which sends and detects all of the necessary signals for FAX communication.
It can be controlled by writing commands from the CPU (IC501: inside ASIC) to the register in the modem (IC505).
This modem (IC505) also sends DTMF signals, generates a call tone (from the speaker), and detects a busy tone and dial
tones.
Overview of Facsimile Communication Procedures (ITU-T Recommendation):
1. ON CCITT (International Telegraph and Telephone Consultative Committee)
The No. XIV Group of ITU-T, one of the four permanent organizations of the International Telecommunications Union (ITU),
investigates and make recommendations on international standards for facsimiles.
2. Definition of Each Group
• Group I (G1)
Official A-4 size documents without using formats which reduce the band width of a signal are sent over telephone lines.Deter-
mined in 1968.
Transmission for about 6 minutes at a scanning line density of 3.85 lines/mm.
• Group II (G2)
Using reduction technology in the modulation/demodulation format, an A-4 size document is sent at an official scanning line den-
sity of 3.85 lines/mm for about 3 minutes.
Methods to suppress redundancy are not used.
Determined in 1976.
• Group III (G3)
Method of suppressing redundancy in the image signal prior to modulation is used. An A-4 size document is sent within about
one minute.
Determined in 1980.
• Group IV (G4)
Transmission is via the data network. A method is provided for suppressing redundancy in signals prior to transmission, and
error-free reception of transmission is possible.
The scope of these facsimile applications is not limited simply to transmission of written statements. Through symbiotic linkages
with other communication methods, it can be expected to expand to include integrated services.
Содержание KMF0609058CE
Страница 10: ...10 KX FP206CX KX FP218CX 6 Technical Descriptions 6 1 Connection Diagram ...
Страница 12: ...12 KX FP206CX KX FP218CX 6 2 1 General Block Diagram ...
Страница 14: ...14 KX FP206CX KX FP218CX 6 3 2 Memory Map ...
Страница 23: ...23 KX FP206CX KX FP218CX 6 4 2 Block Diagram ...
Страница 25: ...25 KX FP206CX KX FP218CX ...
Страница 38: ...38 KX FP206CX KX FP218CX b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format ...
Страница 66: ...66 KX FP206CX KX FP218CX 11 2 The Example of the Printed List 11 2 1 User Mode 11 2 1 1 KX FP206CX ...
Страница 67: ...67 KX FP206CX KX FP218CX 11 2 1 2 KX FP218CX Note The above values are the default values ...
Страница 76: ...76 KX FP206CX KX FP218CX REFERENCE Test Mode P 57 ...
Страница 77: ...77 KX FP206CX KX FP218CX REFERENCE Test Mode P 57 ...
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Страница 82: ...82 KX FP206CX KX FP218CX REFERENCE Test Mode P 57 ...
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Страница 118: ...118 KX FP206CX KX FP218CX I O and Pin No Diagram ...
Страница 120: ...120 KX FP206CX KX FP218CX Other NG example while the power is ON and the LCD displays the following ...
Страница 121: ...121 KX FP206CX KX FP218CX 12 5 5 2 NG Example ...
Страница 123: ...123 KX FP206CX KX FP218CX ...
Страница 126: ...126 KX FP206CX KX FP218CX Note Check to the SP Phone Rx Tx signal routes Refer to Check Sheet for Signal Route P 122 ...
Страница 128: ...128 KX FP206CX KX FP218CX 12 5 8 2 Troubleshooting Flow Chart ...
Страница 134: ...134 KX FP206CX KX FP218CX 12 5 12 Thermal Head Section Note Refer to Thermal Head P 24 ...
Страница 135: ...135 KX FP206CX KX FP218CX 13 Service Fixture Tools ...
Страница 139: ...139 KX FP206CX KX FP218CX 14 3 Disassembly Procedure 14 3 1 How to Remove the Image Sensor CIS ...
Страница 140: ...140 KX FP206CX KX FP218CX 14 3 2 How to Remove the Thermal Head ...
Страница 141: ...141 KX FP206CX KX FP218CX ...
Страница 142: ...142 KX FP206CX KX FP218CX 14 3 3 How to Remove the Bottom Frame ...
Страница 143: ...143 KX FP206CX KX FP218CX 14 3 4 How to Remove the P C Boards and Speaker ...
Страница 144: ...144 KX FP206CX KX FP218CX 14 3 5 How to Remove the Power Supply Board and AC cord ...
Страница 145: ...145 KX FP206CX KX FP218CX 14 3 6 How to Remove the Gear Block and Separation Roller ...
Страница 146: ...146 KX FP206CX KX FP218CX 14 3 7 How to Remove the Gears Motors and Arms of the Gear Block ...
Страница 147: ...147 KX FP206CX KX FP218CX ...
Страница 148: ...148 KX FP206CX KX FP218CX 14 3 8 How to Remove the Handset Cradle and Hook Switch Board ...
Страница 149: ...149 KX FP206CX KX FP218CX 14 3 9 How to Remove the Back Cover ...
Страница 150: ...150 KX FP206CX KX FP218CX 14 3 10 How to Remove the Platen Roller and Lock Lever ...
Страница 151: ...151 KX FP206CX KX FP218CX ...
Страница 152: ...152 KX FP206CX KX FP218CX 14 3 11 How to Remove the Pickup Roller ...
Страница 153: ...153 KX FP206CX KX FP218CX 14 3 12 How to Remove the Operation Panel ...
Страница 154: ...154 KX FP206CX KX FP218CX 14 3 13 How to Remove the Operation Board and LCD 14 3 13 1 KX FP206 ...
Страница 155: ...155 KX FP206CX KX FP218CX 14 3 13 2 KX FP218 ...
Страница 156: ...156 KX FP206CX KX FP218CX 14 3 14 How to Remove the Separation Holder and Exit Roller ...
Страница 157: ...157 KX FP206CX KX FP218CX 14 3 15 Installation Position of the Lead Wires 14 3 15 1 Lower Section ...
Страница 158: ...158 KX FP206CX KX FP218CX ...
Страница 159: ...159 KX FP206CX KX FP218CX ...
Страница 160: ...160 KX FP206CX KX FP218CX 14 3 15 2 Operation Panel Section KX FP206 ...
Страница 161: ...161 KX FP206CX KX FP218CX 14 3 15 3 Operation Panel and Mic Board Section KX FP218 ...
Страница 176: ...176 KX FP206CX KX FP218CX 16 1 4 Power Supply Board 16 1 5 Interface Board ...
Страница 179: ...179 KX FP206CX KX FP218CX 16 3 Test Chart 16 3 1 ITU T No 1 Test chart ...
Страница 180: ...180 KX FP206CX KX FP218CX 16 3 2 ITU T No 2 Test Chart ...
Страница 181: ...181 KX FP206CX KX FP218CX 16 3 3 Test Chart ...
Страница 200: ...200 KX FP206CX KX FP218CX MEMO ...
Страница 211: ...211 KX FP206CX KX FP218CX 20 1 2 Operation Panel Section ...
Страница 212: ...212 KX FP206CX KX FP218CX 20 1 3 Upper Cabinet Section ...
Страница 213: ...213 KX FP206CX KX FP218CX 20 1 4 Back Cover Section ...
Страница 214: ...214 KX FP206CX KX FP218CX ...
Страница 215: ...215 KX FP206CX KX FP218CX 20 1 5 Lower Cabinet Section ...
Страница 216: ...216 KX FP206CX KX FP218CX 20 1 6 Gear Block Section ...
Страница 217: ...217 KX FP206CX KX FP218CX ...
Страница 218: ...218 KX FP206CX KX FP218CX 20 1 7 Screws ...
Страница 219: ...219 KX FP206CX KX FP218CX 20 1 8 Accessories and Packing Materials ...