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DS1000/2000 Correspondence Course

DS2000 System Installation

102 ◆ DS1000/2000 Workbook NEC America

Installing the Digital Door Box

The Digital Door Box (P/N 80560) is a self-contained Intercom unit typi-

cally used to monitor an entrance door. A visitor at the door can press the

Door Box call button (like a door bell). The Door Box then sends chime

tones to all extensions programmed to receive chimes. To answer the

chime, the called extension user just lifts the handset. This lets the exten-

sion user talk to the visitor at the Door Box. The Door Box is convenient to

have at a delivery entrance, for example. It is not necessary to have com-

pany personnel monitor the delivery entrance; they just answer the Door

Box chimes instead.

The number of Door Boxes you can install is limited by the System Load

Factor (Calculating the DS2000 load factor on page 25).

The Door Box is a weather-tight unit, with an operating temperature range

of 0 to 45 degrees C (32 to 113 degrees F) and a relative humidity of 10-

95%, non-condensing. It is not intended for outdoor installation.

Any available 16DSTU PCB port can support a Digital Door Box.

To install the Digital Door Box:

1. Snap open the Door Box case.

2. Punch down one end of a two-pair twisted station cable on the extension

block as shown below.

3. Run the station cable through the hole in the back of the Door Box.

When wall mounting, use the two holes in the base of the Door Box

for the mounting screws.

4. Strip the conductors back about 1/2 inch and connect to the Door Box

terminals.

NEC DS1000 Correspondence Course Workbook

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