Network Device User's Guide

98-16081c
Network
Interface
LEDs
NET
DSU/CSU
3166
Port1
OK
Fail
Test
Sig
OOF
Alrm
EER
DTR
TXD
RXD
CTS
RTS
Select
In
Out
Net
Mon
SDCP Operation
3-5
3166-A2-GB20-10
November 1998
Table 3-2. Network Interface (NET) LEDs
Name
Color Meaning
Sig Green Monitors the signal being received from the network.
ON: A recoverable signal is being received from the
network.
OFF: The signal cannot be recovered from the network (a
Loss of Signal condition exists).
OOF Yellow Monitors Out Of Frame (OOF) conditions on the received
network signal.
ON : At least one OOF was detected on the signal during the
sampling period.
OFF: No OOFs were detected on the signal during the
sampling period.
Alrm Yellow Indicates whether an alarm condition exists on the received
network signal.
ON: 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.
OFF: No alarm condition exists on the network interface
signal.
EER Yellow Indicates the Excessive Error Rate (EER) has been exceeded
on the network interface.
NOTE: This LED is only valid when ESF framing is being
used.
ON: The EER has been exceeded on the network interface.
OFF: The EER has not been exceeded on the network
interface.