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OK
Fail
Test
Sig
Network
OOF
Interface
NET
Alrm
LEDs
EER
DTR
TXD
Port1
RXD
CTS
RTS
Net
Mon
In
Out
DSU/CSU
3166
98-16081c
3166-A2-GB20-20
Table 3-2. Network Interface (NET) LEDs
Name
Color
Meaning
Sig
Green
Monitors the signal being received from the network.
ON :
OFF :
OOF
Yellow
Monitors Out Of Frame (OOF) conditions on the received
network signal.
ON :
OFF :
Alrm
Yellow
Indicates whether an alarm condition exists on the received
network signal.
ON :
OFF :
EER
Yellow
Indicates the Excessive Error Rate (EER) has been exceeded
on the network interface.
ON :
OFF :
March 1999
A recoverable signal is being received from the
network.
The signal cannot be recovered from the network (a
Loss of Signal condition exists).
At least one OOF was detected on the signal during the
sampling period.
No OOFs were detected on the signal during the
sampling period.
An alarm condition (LOS, LOF, EER, Yellow, AIS) exists
on the received network signal. Use the Device Health
and Status command to determine the alarm type.
No alarm condition exists on the network interface
signal.
NOTE:
This LED is only valid when ESF framing is being
used.
The EER has been exceeded on the network interface.
The EER has not been exceeded on the network
interface.
SDCP Operation
3-5
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