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Power Systems
DEFINITY ProLogix Solutions Release 2 Overview 
555-235-100
Issue 2 June 1999 3-2
Power Systems
Lucent Technologies offers the following solutions to help provide protection from power disturbances and 
disasters and to provide power for equipment:
Uninterruptible Power Systems (UPS)
A UPS helps safeguard your DEFINITY ProLogix Solutions and associated 
applications from utility power irregularities. During a power failure, the UPS 
battery activates, supplying power for a limited amount of time.
Surge Protectors
Surge protectors help protect PCs, fax machines, and other equipment from 
electrical surge damage. AC Protectors prevent voltage surges from entering the 
system via the AC utility line. Line Protectors prevent voltage surges from 
entering the system via incoming central office (CO) lines or via wiring for 
telephones (tip and ring) that extend to or from another building (In-Range Out-
of-Building).
Terminal Power Supplies
Terminal Power Supplies provide local power for telephones and adjuncts that 
require additional power (for example, DCP telephones with headset adapters 
and adjunct speakerphones).