10
Power-On
When power is applied, the RTU performs self-diagnostics and the PWR LED is on.
The self-diagnostics includes a power-on self-test. During the power-on self-test, all of
the LEDs turn on for one second.
TST
DSL
ETHERNET
ALM
PWR
TM
97-15607
Power – green
Alarm – red
Test – yellow
Digital Subscriber Line – green
Ethernet Link – green
5216
Refer to
Troubleshooting on page 11 for LED indications requiring action.
Status LEDs
All of the LEDs turn on and off during the power-on self-test. After a successful
self-test, the LEDs should appear as indicated in BOLD in the Condition column below.
LED
Condition
Status
PWR
ON
The RTU has power.
ALM
OFF
ON
No active alarms.
An alarm condition exists.
TST
OFF
ON
No active tests.
The TST LED is on during the power-on self-test and
during a test initiated by the service provider.
DSL
Blinking
ON
OFF
RTU is establishing the active DSL link. The LED blinks
on and off about five times per second.
The DSL link is now active and ready to transmit and
receive data.
The DSL link has not been established.
ETHERNET ON
OFF
The Ethernet connection is active.
No Ethernet device is detected.
