User`s manual

y Symptom: S0 bus from an NTBA - data works, but ISDN telephone
does not.
¾ Solution: Connect according to the following chart for connecting
CO and CPE with NTBA.
5.4 Other Issues
Power and Cooling Problems
If the POWER indicator does not turn on when the power cord is plugged in,
users may have a problem with the power outlet, power cord, or internal
power supply as explained in the previous section. However, if the unit
powers off after running for a while, check for loose power connections,
power losses or surges at the power outlet, and verify that the fan on back of
the unit is unobstructed and running prior to shutdown. If users still cannot
isolate the problem, then the internal power supply may be defective.
Installation
Verify that all system components have been properly installed. If one or
more components appear to be malfunctioning (e.g., the power cord or
network cabling), test in an alternate environment where users are certain
that all other components are functioning properly.
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