2–
OK
OK
ALM
TST
BKP
SIG
OOF
ALM
SIG
OOF
ALM
1–
OK
9161
IN
OUT
IN
OUT
IN
OUT
IN
OUT
NET
DSX
NET
MON
DSX MON
NETWORK
DSX
POR
T
496-15051
Test
Jacks
LEDs
9
Front Panel LEDs and Test Jacks
The T1 NAM has 12 LED (light-emitting diode) status indicators and four sets of test
jacks.
Test Jacks
The NAM contains four sets of test jacks. Use these for:
Monitoring and testing towards the Network 1 interface
carrier
Monitoring and testing towards the Network 2 interface
carrier
Refer to
Troubleshooting and Maintenance
in the Technical
Reference for more information on the test jacks.
General Status LEDs
Label Indication
Color
What It Means
OK
Power and
Operational
Status
Green
ON
– NAM has power
and is
operational.
OFF – NAM is in a
power-up
self-test, or there
is a failure.
CYCLING – The unit is in
Minimum mode.
Requires an FTP
download.
ALM
System
Failure/
Self-Test
Red
ON
– NAM has just
been reset, or an
error or fault has
been detected.
OFF – No failures have
been detected.
TST
Test Mode
Yellow
ON
– Loopback or test
pattern in
progress,
initiated locally,
remotely, or from
the network.
OFF – No tests are
active.
BKP
Backup
Yellow
Not supported. Remains
off except during a Lamp
Test.
