12
Firmware Download
The firmware download feature is available via the Ethernet port for future upgrades.
During a firmware download, the LED displays are:
H
ON:
ALM, ETHERNET, PWR, and TST
H
OFF:
DSL
Troubleshooting
LED Symptom
Action
All LEDs are on.
The RTU is not functional. Contact the NSP.
ALM LED remains
on.
The power-on self-test may have failed. Unplug the unit and
reapply power. If the alarm LED is still on, contact the NSP.
ALM and TST
LEDs remain on.
Refer to
Firmware Download
.
If the LEDs remain on after five
minutes, contact the NSP.
DSL LED is off.
Verify that the DSL cable is securely installed on both ends.
If the RTU is not in firmware download mode, unplug the RTU
and reapply power. If problem continues, contact the NSP
DSL LED continues
to blink after the
power-on self-test.
The RTU is attempting to establish the DSL link. If the DSL
LED continues to blink for more than five minutes, contact the
NSP.
DSL LED is on and
there is no data
transmission.
The DSL link has been established but there is no data
transmission. First, verify the Ethernet connection. If the
problem persists, contact the NSP.
DSL and Ethernet
LEDs are on and
there is no data
transmission.
The DSL link and the Ethernet link have been established. If
the problem continues, contact the NSP.
Ethernet LED is off.
Verify that:
H
The Ethernet 10BaseT cable is securely installed at both
ends, and
H
At least one PC is connected and powered on.
Verify that the correct straight-through or crossover cable is
installed. Refer to
Cables & Connectors
,
page 14.
