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7. Monitoring and Troubleshooting
7-26
May 2002 8700-A2-GB20-40
An LED is not lit. LED is out. Run the Lamp Test. If the LED
in question does not flash with
the other LEDs, then contact
your service representative.
Not receiving data.
The network or DTE port
cables are not connected
(check front panel LEDs
for more information).
A test is being executed
on the unit (check the
TEST LED on the front
panel).
The far-end device is
offline.
Check network and DTE port
cables.
Check Health and Status
menu.
Run Loopback tests. Refer to
Chapter 8,
Testing
.
Stop the test or wait for the
test to end.
Make sure the far-end device
is on.
Not receiving data on
one or more time slots.
The DSL line rate does not
support the number of DSL
time slots defined.
Match the number of DSL time
slots to the DSL line rate. See
Table A-2, Payload Rates and
DSL Line Rates for Model 8777,
Table A-3, Payload Rates and
DSL Line Rates for G.703, for
information about payload rates
for different DSL line rates.
The associated port is
administratively disabled.
Check the Display LEDs screen
to determine if the port is
disabled. Enable the port if
necessary using the Network,
DSX-1, or G.703 Interface
Options screen.
Table 7-6. Troubleshooting (2 of 2)
Symptom Possible Cause Solutions