21
421 RCV
B
Busy Tone is detected after
sending NSF Signal.
Remote station disconnected the
line.
Wrong number is dialed.
422 XMT
B
Content of NSF (or DIS) or NSC
(or DTC) was invalid.
There is an incompatibility.
427 G3 RCV
B
DCN received to NSF/CSI/DIS
transmitted.
The interface is incompatible.
433 XMT
RCV
B, D
T.30 Protocol abnormal.
Defective remote station.
434 XMT or
RCV
B
CD (response from Modem) did
not turn OFF within 180 sec. after
receiver detected FLAG signal.
Remote unit is defective.
FCB PCB or LCU PCB is
defective.
436 G3 RX
C
DCN received after transmitting
FTT.
Transmitter is defective or
incompatible.
Line quality is poor.
457 RELAYXM
T
CONF.XM
T/POLL
B
Remote unit does not have
Relayed XMT or Confidential
Comm. capability.
459 RCV
C
Failed training in Phase C.
Line quality is poor.
(Training signal is distorted due to
line noise)
FCB PCB or LCU PCB are
defective.
490 RCV
C
Sum of error line exceeded the
limit (Parameter 70) by 64 lines.
Line quality is poor.
FCB PCB or LCU PCB are
defective.
494 RCV
C
Interval between two EOLs was
more than 10 sec. when receiver
received message data.
Transmitter is defective.
Line quality is poor. (EOL is
damaged due to line noise)
FCB PCB or LCU PCB are
defective.
495 XMT/RCV
C
During reception, CD turned OFF
or continued ON for long time.
During communication, lost loop -
current.
Line is disconnected.
Transmitter is defective.
FCB PCB or LCU PCB are
defective.
496 XMT
C
CS of modem is not able to turn
ON.
FCB PCB is defective.
501 XMT/
RCV(V.34)
B
Remote unit does not have Modem
compatibility.
502 XMT/
RCV(V.34)
B, C, D
During reception, CD turned OFF
or continued ON for long time.
During communication, lost loop -
current.
Line is disconnected.
Transmitter is defective.
FCB PCB or LCU PCB are
defective.
503 XMT/
RCV(V.34)
B, C, D
CS of modem is not able to turn
ON during training.
FCB PCB is defective.
Line is disconnected.
504 RCV/V.34
(Polling)
B
Polling is rejected from the remote
station.
No polling document is set.
505 XMT/V.34
(Polling)
B
Polling XMT is rejected.
No polling document is set.
Information Codes
Code
Mode
Phase
Description of Problem
Cause
Содержание UF 890 - Panafax B/W Laser
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