Door Box - NEC UX5000 Hardware Manual

S 4-4
ECTION

DOOR BOX

4.4.1
Installing a Door Box (Figure 4-9 - Figure 4-10)
The Door Box is a self-contained, water-resistant, Intercom unit typically 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. The system can have up to eight Door Boxes.
Each 2PGDAD module audio output can optionally support two analog Door Boxes. In addition, you can
connect each circuit's control relay to an electric door strike. This allows an extension user to remotely activate
the door strike while talking to a visitor at the Door Box. The control relays are normally open. When the relay
on the 2PGDAD is used, there is no need to assign the relay to the Door Box - simply connect the relay as
detailed in the steps below for the Door Box used. The relays on the 2PGDAD modules are numbered 5-8.
The relay closes when the Door Box/external page zone is called. The maximum applied voltage is
24vDC at .5A for each contact.
1. Make sure the jumper in the 2PGDAD module for the associated Door Box is set correctly. (Refer to
Figure 4-4 JUMPER SETTINGS on page 4-5).
2. If a line cord was not previously connected to the 2PGDAD, complete Steps 3-6. Otherwise, skip to Step
7.
3. Install a modular jack for each 2PGDAD module. For each module, run one-pair 24 AWG station cable
from the cross-connect block to a modular jack. Ground the unused pair.
4. Terminate the extension leads to GRN/RED of the modular jack. Terminate the unused leads to the jack.
5. Install bridging clips as required.
6. Plug a modular line cord from the mod jack to the CN1 connector on the 2PGDAD module.
7. If wall mounting the Door Box, remove the screw on the front of the Door Box.
8. Remove the back half of the Door Box and attach this mounting bracket to the wall with the two screws
provided.
9. Connect the two-conductor station cable from the CN4 connectors within the 2PGDAD module to the
Door Box terminals. These wires must be routed through the opening in the bottom of the Door Box
mounting bracket.
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Be sure to maintain the proper polarity.
10. Replace the front half of the Door Box and reattach the screw to secure it in place.
Chapter 4
A 2PGDAD Module is required for this feature.
A 2PGDAD circuit used for an analog Door Box cannot also be used for
External Paging.
Chapter 4 - Telephones and Optional Equipment
4 - 13