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 PORT
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.