Error Codes
D356 20 SM
Code Meaning Suggested Cause/Action
0-21
EOL signal (end-of-line)
from the other end not
received within 5 s of the
previous EOL signal
Check the connections between the FCU,
NCU, & line.
Check for line noise or other line
problems.
Replace the NCU or FCU.
The remote machine may be defective or
may have disconnected.
Cross reference
Maximum interval between EOLs and
between ECM frames - G3 Bit Switch 0A,
bit 4
0-22
The signal from the other
end was interrupted for
more than the acceptable
modem carrier drop time
(default: 200 ms)
Check the line connection.
Check the FCU - NCU connectors.
Replace the NCU or FCU.
Defective remote terminal.
Check for line noise or other line
problems.
Try adjusting the acceptable modem
carrier drop time.
Cross reference
Acceptable modem carrier drop time - G3
Switch 0A, bits 0 and 1