NEC ELECTRA ELITE IPK II, User Manual

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Electra Elite IPK II Document Revision 4C
Door Box 2 - 379
Door Box
Description
The Door Box is a self-contained 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. To answer the chime, the called extension user lifts the
handset. This lets the extension 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 company personnel monitor the
delivery entrance; they answer the Door Box chimes instead. Any number of system extensions can
receive Door Box chime tones.
Each Door Box has a pair of normally open relay contacts that can be connected to an electric door
strike. Use these contacts to remotely control the entrance door. After answering the Door Box chimes, a
multiline terminal user can press the Recall key to activate the Door Box contacts. This in turn releases
the electric strike on the entrance door. The device connected to the Door Box contacts cannot exceed
the contact ratings shown in the following table:
The system can have up to eight Door Boxes. Six chime tones are available.
Conditions

The Door Box Feature Requires a PGD(2)-U10 ADP. A maximum of 56 PGD(2)-U10 ADPs
can be installed in an IPK II system. Refer to the Electra Elite IPK II System Hardware
Manual for more information.

If a PGD(2)-U10 ADP circuit has a Door Box (doorphone) connected, you cannot use that
circuit for External Paging.

Door Boxes can ring multiline, single line, or wireless telephones.

External Call forward by Doorphone can forward Doorphone calls Off-Premise while a user
is away. This feature only works for ISDN lines.

Off-hook signaling is available for Door Boxes. If an extension user is on the telephone, the
Large LED flashes indicating the Door Box ringing, and the display shows a call from the
door box.
Door Box Specifications
Contact Configuration Normally Open
Maximum Load 60mA @30 VDC
10mA @90 VDC
Maximum Initial Contact Resistance 50m Ohms