Raisecom RC831-120-M User Manual page 15

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The indicators on the front panel of the device show the current operating status of the power supply,
optical interface, and E1 interface. Take RC831-120 as an example, the indicators are described in
the table below.
Serial
Number
1
2
3
4
5
6
7
8
9
10
11
12~15
Title Color
ALM Red
PWR Green
LPR Red
L LOS Red
R LOS Red
L LOF Red
R LOF Red
L E-3 Red
R E-3 Red
L E-6 Yellow
R E-6 Yellow
LOS 1~4 Red
Description
Total alarm indicator.
ON: any one of the local alarms occurs.
Flickering: no local alarm but remote alarm
occurs
OFF: no local/remote alarm
Power supply indicator.
ON: the power supply is operating normally.
Remote device power-off indicator.
ON: both the local device and the remote device
are working normally when the power supply of
the remote device is down.
OFF: other status
ON: loss of signal at the local optical interface
ON: loss of signal at the remote optical interface
ON: loss of frame at the local optical interface
ON: loss of frame at the remote optical interface
ON: the Bit Error Rate(BER) at the local optical
interface exceeds 1E-3
ON: the BER at the remote optical interface
exceeds 1E-3
ON: the BER at the local optical interface
exceeds 1E-6
ON: the BER at the remote optical interface
exceeds 1E-6
The indicators for Loss of signal (LOS) alarm at
E1 1~4.
ON: local E1 LOS alarm
Flickering: remote E1 LOS alarm
User Manual
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