Code
Meaning
Suggested Cause/Action
0-04
CFR or FTT not received after
1. Check line connection.
modem training (G3 mode)
2. Check connectors from FCU to modem and NCU.
3. Try raising the tx level (use bit switch 3, or a dedicated tx
parameter for that address).
4. Replace the FCU, NCU, or modem.
5. The other terminal may be faulty.
6. If rx signal is weak or defective, there may be a bad line.
0-05 Unsuccessful after modem training
1. Check line connection.
at 2400 bps (G3 mode) 2. Check connectors from FCU to modem and NCU.
3. Try raising the tx level (use bit switch 3, or a dedicated tx
parameter for that address).
4. Replace the NCU, FCU, or modem.
5. Check for line problems.
0-06
The other terminal did not reply to
1. Check line connection.
DCS (G3 mode) 2. Check connectors from FCU to modem and NCU.
3. Try raising the tx level (use bit switch 3, or a dedicated tx
parameter for that address).
4. Replace the NCU, FCU, or modem.
5. The other end may be defective or incompatible.
6. Check for line problems.
5-15