Raisecom RC905-EE1 User Manual - page 4
4
Chapter 2 Operating Instruction
I.
Introduction of Front Panel:
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The definitions of indicators are as follows
E1 link indicators:
LOS (RED)
Loss of receive signal alarm at E1 link;
When E1 link is working properly, it is off.
LER (RED)
Fault alarm of receive signals at E1 link;
On fractional E1 pattern, this alarm indicates that there is loss of frame (LOF), AIS
(upstream E1 alarm) or CRC (CRC4 fault of fractional E1).
On E1 transparent (unframed) pattern, this alarm indicates AIS (upstream E1 alarm)
only.
When E1 link is working properly, it is off.
RLP(Yellow) It indicates the normal status of remote-site loop-back test.
On fractional E1 pattern, when setting this equipment on remote-site loop-back
mode by Dip-switch, if the RLP indicator is on, it indicates the test is successful,
and the link is in good condition.
When the device is working, it is off.
RAL (RED) It indicates remote-site E1 link alarm.
On E1 fractional pattern, when LOS or LER alarm occurs at the remote-site
equipment, the RAL at the local-site device is on.
When E1 is working properly, it is off.
Ethernet Link Indicators:
LNK(Green) When it is on, it indicates that network link is connected properly.
ACT(Green) When it is flashing, it indicates that data is transmitting and receiving.
TX
BALANCE
RX
RAL
RLP
LOS
LER
LNK
PWR
ACT
FDX
RC905-EE1
ETH
E1 Link Loss
Alarm
E1 LOF,AIS,CRC
Overall Alarm
Remote Loop-
Back Indicator
Remote-site Alarm
Indicator
Ethernet Link
Power Indicator
Ethernet
TX/RX Action
Full duplex mode