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Automatic
Operation
The 578 Porta Systems Linebacker™ Power Fail Transfer
Unit automatically activates the instant of a
power outage or system alarm. Dial tone is maintained to eight
pre-designated lines and calls in progress remain uninterrupted—even after service is restored and the circuits
are returned to PBX control -
a feature not always available in other such units.
Quick Installation
The 66-type configuration mounts easily on a standard 89B
bracket or bacKBoard. The unit is equipped with two RJ21 connectors for
quick connection to Central Office cables and stations. A 66-type clip
field is also provided if cross-connection is required.
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