Error Codes
D649 20 SM
Code Meaning Suggested Cause/Action
0-04
CFR or FTT not received
after modem training
 Check the line connection.
 Try changing the tx level and/or cable
equalizer settings.
 Replace the FCU.
 The other terminal may be faulty; try sending
to another machine.
 If the rx signal is weak or defective, there may
be a bad line.
Cross reference
Tx level - NCU Parameter 01 (PSTN)
Cable equalizer - G3 Switch 07 (PSTN)
Dedicated Tx parameters in Service Program
Mode
0-05
Modem training fails even
G3 shifts down to 2400
bps.
 Check the line connection.
 Try adjusting the tx level and/or cable
equalizer.
 Replace the FCU.
 Check for line problems.
Cross reference
See error code 0-04.
0-06
The other terminal did not
reply to DCS
 Check the line connection.
 Try adjusting the tx level and/or cable
equalizer settings.
 Replace the FCU.
 The other end may be defective or
incompatible; try sending to another machine.
 Check for line problems.
Cross reference
See error code 0-04.
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