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User Manual
8
3.3 Indicator definition
The indicators on the device front panel show the current working status of device power supply,
optical interface, and E1 interface. The definition of the indicators is described in the table below:
Number Indicator Color Description
Indicators for the power supply
1
LPR
Red
Remote device power-off indicator.
ON
: both the local and remote devices are
operating normally when the remote system is
power off.
OFF
: other status
2
PWR
Green Power
supply
indicator.
ON
: the power supply is working normally.
Indicators for the V.35 interface
3
LOF
Red
V.35 interface data channel, loss of G.704
frame from fiber receiving signal alarm
indicator
ON
: local E1 LOF alarm only
OR alarm occurs on both local and remote
site.
Flickering
: remote E1 LOF alarm only
4
AIS
Red
V.35 interface data channel, fiber receiving
signal AIS alarm indicator