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Transmission and reception in the ECM mode
ECM (Error Correction Mode) conforms to T.30.
When an error has occurred to the received image data, the receiving station informs the sending
station of the occurrence of the error, and the sending station sends the image data again.
Only error frame retransmitted
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Transmtter
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Receiver
256 frames received
Error occurred
GD-1220/1221
DIALING/COMMUNICATION CONTROL
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