10
Network 1 and Network 2 Interface LEDs
Label
Indication
Color
What It Means
SIG
Signal
Green
ON
– A recoverable signal is present on
the Network 1/Network 2 interface.
OFF – The signal cannot be recovered
from the Network 1/Network 2
interface. An LOS condition exists.
OOF
Out of Frame
Yellow
ON
– At least one OOF was detected
during the sampling period.
OFF – No OOFs were detected during the
sampling period.
ALM
Alarm
Yellow
ON
– An alarm condition is present on the
Network 1/Network 2 interface.
Current alarm conditions:
H
Loss of Signal ( LOS )
H
Loss of Frame (LOF)
H
Excessive Error Rate (EER)
H
Yellow Alarm
H
Alarm Indication Signal (AIS)
OFF – No alarm condition is present on
the Network 1/Network 2 interface.
Port 1 and Port 2 LEDs
Label
Indication
Color
What It Means
1-OK
2-OK
Operational
Status
Green
ON
– The interchange circuits for the port
are in the correct state to transmit
and receive data.
OFF – The port is idle. Occurs if the port is
disabled, if an EDL Out of Frame or
EER condition is present, if a DCLB
is active, or if the port is configured
to monitor DTR and/or RTS and the
lead(s) is not asserted.
