11
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
Fast
blinking
Slow
blinking
ON
OFF
The RTU is establishing the active DSL link. The LED
blinks on and off about five times per second.
The DSL link is up and the RTU is establishing the active
PPP link. The LED blinks on and off every two seconds.
The DSL/PPP link is 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.
Troubleshooting
LED Symptom
Action
All LEDs are on.
If the LEDs remain on for more than ten minutes, the RTU is not
functional. Unplug the unit and reapply power. If the ALM LED
is still on, contact the service provider.
ALM LED remains
on.
The power-on self-test may have failed. Unplug the unit and
reapply power. If the alarm light is still on, contact the service
provider.
ALM and TST
LEDs are blinking.
Firmware download may be in progress. If firmware download
is not in progress or the LEDs continue blinking for more than
ten minutes, contact the service provider. Do not unplug the
unit, unless instructed to do so by the service provider.
DSL LED is off.
Verify that the DSL cable is securely installed on both ends.
Unplug the unit and reapply power. If the problem continues,
contact the service provider.
