Chapter 3. System Features

Section 700 - Operation

Considerations

N/A

Power Failure Transfer

Description

Power Failure Transfer provides telephone service to a limited number of Single Line Telephones (SLTs) during a power failure. The SLTs are connected to the CO via a Power Failure Unit (PFU). In the event of a power failure, the power failure extensions have dial tone directly from the CO. (System features and restrictions do not apply.)

Hardware Requirements

PFU (VA-43703)

An SLT that will be connected to the PFU.

Related Programming

N/A

Considerations

Up to four SLTs can be connected to one PFU.

For added protection against power outages, backup batteries can be installed in the System. Backup batteries provide full telephone service and system features to all System extensions for a limited amount of time. With maximum traffic, the backup batteries last up to 30 minutes.

Power On Maintenance

Description

The System allows you to change most circuit cards, programming, and many other maintenance features while the System is powered on and operating. Very few operations require the System to be powered down or out of service. The System therefore continues to operate without interruption for most maintenance functions.

A limited number of items such as the replacement of some common control circuit cards requires the system to be powered down.

Hardware Requirements

N/A

Related Programming

N/A

Considerations

N/A

58

DBS 576 (USA), Revised 6/11/98

576-13-700

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Image 58
Panasonic 524X07801B manual Power Failure Transfer, Power On Maintenance