4. Press the button until Capability ECM appears, then press the button.
5. Press the button until Disable appears, then press the button to disable ECM.
Modem Speed
Some of the legacy fax devices do not support the V.34 modem speed of 33,600 bits per second (bps). You may experience fax send or receive errors due
to the higher modem speed. You can disable the V.34 with the following instructions.
1. When the printer is in Customer Mode, select Fax/Scanner Diag and press button.
2. Press the button until Parameter appears, then press the button.
3. Press the button until FAX Parameter appears, then press the button.
4. Press the button until Capability V34 appears, then press the button.
5. Press the button until Disable appears, then press the button to disable V.34.
You can also reduce the modem speed if you continue to experience fax communication problem.
z14,400bps (V.17)
z9,600bps (V.29) or
z4,800bps (V.27ter).
You can change the modem transmission speed with the following instructions.
1. When the printer is in Customer Mode, select Fax/Scanner Diag and press button.
2. Press the button until Parameter appears, then press the button.
3. Press the button until FAX Parameter appears, then press the button.
4. Press the button until G3M TX Modem Speed appears, then press the button.
5. Press the button until V17 appears, then press button to enable V.17 (14,400bps), select V29 to enable V.29 (9,600bps), or select V27ter to
enable V.27ter (4,800bps).
You can change the modem receive speed with the following instructions.
1. When the printer is in Customer Mode, select Fax/Scanner Diag and press button.
2. Press the button until Parameter appears, then press the button.
3. Press the button until FAX Parameter appears, then press the button.
4. Press the button until G3M RX Modem Speed appears, then press the button.
5. Press the button until V27ter+V29+V33+V17 appears, then press the button to enable V.17 (14,400bps), select V27ter+V29 to enable
V.29 (9,600bps), or select V27ter to enable V.27ter (4,800bps).
Fax Data Encoding Method
Some of the legacy fax devices do not support the JBIG data encoding method. You may experience fax send or receive errors due to this data encoding
method. You can disable the JBIG and select the MH, MR or MMR encoding with the following instructions.
You can change the modem transmission encoding with the following instructions.
1. When the printer is in Customer Mode, select Fax/Scanner Diag and press button.
2. Press the button until Parameter appears, then press the button.
3. Press the button until FAX Parameter appears, then press the button.
4. Press the button until G3M TX Coding appears, then press the button.
5. Press the button until MMR appears, then press the button to enable MMR encoding, select MR to enable MR encoding, or select MH to enable
MH encoding.
You can change the modem receive encoding with the following instructions.
1. When the printer is in Customer Mode, select Fax/Scanner Diag and press button.
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