Specifications

13
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
ALMPWR
TM
97-15317
Power – green
Alarm – red
Test – yellow
Digital Subscriber Line – green
Ethernet Link – green
5446
Refer to Troubleshooting, page 14, 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 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 NSP.
DSL Fast
blinking
Slow
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 up and the RTU is establishing the active
PPP (Point-to-Point protocol) 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 10BaseT connection to the Ethernet hub or
PC is active.
No Ethernet 10BaseT device is detected.