AT&T PagePac Plus AmpliCenter - Manual (Page 38)

Power Failure Operation
The PagePac Plus AmpliCenter will operate with the host telephone
system in the event of a power failure if both are connected to an
uninterruptable power supply (UPS). If the host system is Centrex, no
local power is required for the telephone system, though the AmpliCenter
requires AC power.
Common Problems
Some common problems encountered when the paging system is not
operating are described below. Check each item in the order listed.
1. No AC power to AmpliCenter
2. Host telephone system failure
3. Host system page port failure
4. A hardwire disconnect between host system and PagePac Plus
5. AmpliCenter switch settings tampered with
If the problem has not been resolved by checking the preceding items,
follow the steps described in Troubleshooting below.
Troubleshooting
The following table describes various problems that could occur, and
procedures you can follow to try to solve the problem.
Maintenance and Customer Support 4-3