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Front Panel LEDs and Test Jacks
The T1 NAM has 12 LED (light-emitting diode) status indicators and four sets of test
jacks.
Jacks
LEDs
496-15051
Test Jacks
The NAM contains four sets of test jacks. Use these for:
H
Monitoring and testing towards the Network 1 interface
carrier
H
Monitoring and testing towards the Network 2 interface
carrier
Test
Refer to Troubleshooting and Maintenance in the Technical
Reference for more information on the test jacks.
General Status LEDs
Label Indication
OK
Power and
Operational
Status
ALM
System
Failure/
Self-Test
TST
Test Mode
BKP
Backup
Color
What It Means
Green
ON – NAM has power
OFF – NAM is in a
CYCLING – The unit is in
Red
ON – NAM has just
OFF – No failures have
Yellow
ON – Loopback or test
OFF – No tests are
Yellow
Not supported. Remains
off except during a Lamp
Test.
9
and is
operational.
power-up
self-test, or there
is a failure.
Minimum mode.
Requires an FTP
download.
been reset, or an
error or fault has
been detected.
been detected.
pattern in
progress,
initiated locally,
remotely, or from
the network.
active.
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