Power Fail Options When The 64 Button Console Is Also Installed; Battery Back Up Options - NEC XN120 Getting Started Manual

System telephones

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When Power Fail is set to OFF (marked KT on the card):

When the power fails (or the XN120 is switched off) Exchange line CO1 is not automatically connected to

socket ST8.

When the XN120 is powered on the telephone in socket ST8 will operate as a either a normal XN120 telephone

or XN120 system phone, depending on which type is plugged in.

You can use an XN120 system phone in socket ST8 with the power fail link set to KT.

Power Fail Options when the 64 Button Console is also Installed

The 64 Button Console must be connected to socket ST8 of the XN120.

You must ensure the power fail link (CN500) is set to KT for the console to work correctly.

You cannot use socket ST8 for power fail operation when the 64 Button Console is connected to ST8.

If you have a 64 Button Console installed

You can use the power fail operation of the optional 308 expansion card, if you have one installed.

There must be an exchange line connected to the first CO port of the 308 expansion card.

You can connect the normal telephone directly into the exchange line socket – See instruction above.

There are two options available to provide back up during power failure.

NEC Battery Box

Each XN120 Main and expansion unit can have the optional battery box connected. This will provide

approximately one hour of battery back up. You will need a separate battery box for each XN120 unit.

Refer to the separate guide for further information (Battery Box Guide 991442-5).

Uninterruptible Power Supply (UPS)

Each XN120 Main and Expansion unit can be plugged into a UPS. The UPS is will provide AC power to the

XN120 system. You can plug all XN120 units into a single UPS.

Each XN120 unit can take a maximum of 240VA.

XN120 Getting Started Guide

Optional Equipment

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