2–OK
OK
ALM
TST
BKP
SIG
OOF
ALM
SIG
OOF
ALM
1–OK
9261
IN
OUT
IN
OUT
IN
OUT
IN
OUT
NET1 NET2 NET1 MON NET2 MON NET 1 NET 2 PORT
97-15647

Test

Jacks

LEDs
Troubleshooting
9-3
9161-A2-GH30-30 April 1998

Network and DSX Interface LEDs

Label Indication Color What It Means
SIG Signal Green ON – A recoverable signal is present on the
Network/DSX interface.
OFF – The signal cannot be recovered from
the Network/DSX 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/DSX interface.
Current alarm conditions:
Loss of Signal (LOS)
Loss of Frame (LOF)
Excessive Error Rate (EER)
Yellow
Alarm Indication Signal (AIS)
OFF – No alarm condition is present on the
Network/DSX 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.