Specifications

Installation and Operation Manual Chapter 6 Troubleshooting and Diagnostics
FCD-E1LC Ver. 1.0 Handling Alarms 6-9
Table 6-2. FCD-E1LC Alarm Messages (Cont.)
Alarm
Number
Terminal Message Description Corrective Actions Severity Type
30
BPV ERROR
Bipolar violations in the main link
receive signal. Updated once per
second
Have the main link checked. Perform the power-up self-test
and replace the FCD-E1LC if a failure is detected
MINOR ON
31
EXCESSIVE ERR
RATIO
The bit error rate of the link receive
signal exceeds 1 × 10
-3
1. Problem in the network facilities used by the main link.
2. Turn the FCD-E1LC off for a few minutes, and then
turn it back on and read the alarm messages generated
during the power-up self-test. Replace the FCD-E1LC if
a failure is detected
MAJOR ON/OFF
32
CRC-4 ERROR
CRC-4 errors detected in the main link
receive signal. Updated once per
second
1. Have the link checked.
2. Perform the power-up self-test and replace the
FCD-E1LC if a failure is detected
MINOR ON
34
SFIFO SLIP
Technical problem (FIFO
overflow/underflow), usually caused by
differences in clock rates
1. Check the clock mode of the corresponding data channel.
2. Turn the FCD-E1LC off for a few minutes, and then
turn it back on and read the alarm messages generated
during the power-up self-test. Replace the FCD-E1LC if
a failure is detected.
MAJOR ON
35
LOOP INBAND ON
An inband activated loopback is now
connected on the data channel
If the loopback is no longer needed, disconnect it MAJOR ON
36
MANAGEMENT PORT IS
LOOPED
The management port receives its own
messages (this could be caused by a
test loopback on the communication
path used for SNMP management or on
the management port). Management is
not possible while this condition is
present
Find the location of the loopback and request
disconnection
MAJOR ON/OFF