Specifications
Chapter 6 Troubleshooting and Diagnostics FCD-E1LC Installation and Operation Manual
6-4 Handling Alarms
Display Name Description
BPV LAST MINUTE Last-minute BPV
counter
The number of BPV events detected in the last minute.
BPV WORST MINUTE Worst-minute BPV
counter
The number of BPV events detected during the worst minute
since the last time the counters were cleared.
6.2 Detecting Errors
Power-Up Self-Test
Upon power-up, FCD-E1LC automatically performs self-test, to test critical circuit
functions. At the start of the self-test procedure, the front panel indicators are
turned on and then off: during this interval, check that all the indicators are
OK
.
• If a problem is detected during self-test, FCD-E1LC automatically sends
reports to the supervision terminal.
• If the self-test is successfully completed, FCD-E1LC starts normal operation,
and its front-panel indicators display the status, as explained in
Chapter 2
.
6.3 Handling Alarms
After starting normal operation, the FCD-E1LC continuously monitors critical
signals and signal processing functions. In case a problem is detected, the
FCD-E1LC generates time-stamped alarm messages that cover all the events. An
internal real-time clock provides the time stamp.
The internal clock does not have battery backup, and therefore must be set to
the correct time after turn-off or power failure. This action can be performed by
the management station, or by means of the supervision terminal.
For continuous system monitoring, the user can enable automatic transmission of
alarm messages through the supervisory port. Alarm messages are also
automatically sent as traps to the user-specified network management stations.
Internally, the FCD-E1LC stores alarms in an alarm buffer. This alarm buffer can
store up to 100 alarm messages, together with their time stamps. The alarm
history buffer is organized as a FIFO queue; therefore after 100 alarms are
written into the buffer, new alarms overwrite the oldest alarms.
The alarms can be read on-line by the network administrator using the network
management station, a Telnet host, or a supervision terminal. The network
administrator can then use the various diagnostic tests to determine the causes of
the alarm messages and to return the system to normal operation.
Note