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2 Installing Your System
22 Installing the Control Unit
Quick Reference Guide
Checking the LEDs
After you power up your system, check the green lights on the fronts of the
modules:
• If a single light is out, power down the control unit, reseat the module, and
then power up the carrier.
• If multiple lights are out, power down the carrier, reseat either both modules
(2-slot carrier) or the leftmost module that has a light out (5-slot carrier),
and then power up the carrier.
If the lights are still out, see the “Customer Support Document” on the
accompanying compact disc for information about whom you should contact.
• If your system has a 1600 DSL module, initialization of the
line and extension ports may take up to 40 seconds. The
initialization of the 1600 DSL module itself may take from 2 to
7 minutes
• If your system has a T1 module, initialization may take up to
one minute.