Door Box

Use a Door Box to remotely monitor an entrance door.
Programming for this Feature
Programming Analog Door Boxes
Using DSX-40 Built-In Door Box Ports
Using the PGDAD Module with an Analog Door Box
User Operation
Door Box


The Door Box (P/N 922450) is a self-contained analog 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 or ringing to all extensions programmed to receive chimes. To answer the chime or ringing, the called extension user just 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 just answer the Door Box instead.


In DSX-80/160, a Door Box connects to an available Door Box port on a 2PGDAD Module (P/N 0891027). Each module supports up to two Door Boxes, with the maximum number of Door Boxes installed limited only by the availability of station ports to connect additional 2PGDAD Modules.


In DSX-40, the Door Box can connect to a 2PGDAD module or to one of the two “built-in” Door Box ports. As in DSX-80/160, the maximum number of Door Boxes installed is limited only by the availability of station ports to connect additional 2PGDAD Modules.

Refer to Optional Equipment in the Hardware Manual that came with your system for more or installing the Analog Door Box.

Door Box Relays

Any keyset extension that receives Door Box chimes or ringing can control a control relay, which in turn typically enables an electric strike on an entrance door next to the Door Box. Each of the two Door Box circuits in the 2PGDAD Module has an associated control relay that is automatically assigned. Each DSX-40 “built-in” Door Box port has an associated “built-in” relay that you can assign for either door control or Paging control, but not both.

The equipment you connect to a control relay must be compatible with the following specifications. Refer to your system’s Hardware Manual for more on connecting to the control relay contacts.
Relay Contact Specifications
Contact Configuration: Normally open
Maximum Load: 0.5A @ 120 VAC, 1A @ 24 VDC
Maximum Initial Contact Resistance 100 mOhms
2PGDAD Module
Contact Configuration: Normally open
Maximum Load: 500 mA @ 24 VDC, 250 mA @ 120 VAC

Door Box Alerts

The system uses Ring Groups to control Door Box alerts. When a visitor at the door presses the Door Box call button, the Door Box will alert (chime or ring) all the extensions in the Ring Group to which the Door Box belongs. For example, if Door Box 309 and extensions 301 and 302 are in Ring Group 1, pressing the call button alerts 301 and 302.

Conditions and Defaults


  • Door Box P/N 922450 is a weather-tight unit, and can be mounted outside. It has an operating temperature range of -20 to 60 degrees C (-4 to 140 degrees F) and a relative humidity of 10-95%, non-condensing.

Default Setting

  • In DSX 80/160, no Door Boxes are enabled.
  • In DSX-40, the built-in Door Box ports are enabled for extensions 326 (DOOR 1) and 327 (DOOR 2).

Other Related Features


  • Attendant Position
    • An operator can monitor a Door Box with the following Feature Keys:
      • A Call Coverage key for the Door Box Ring Group to monitor ringing.
      • A Hotline key for the Door Box extension number to call the Door Box.
  • Call Coverage Keys
    • If you enter Door Chime type 0 (normal ring) above, you can set up Call Coverage keys for the Door Box Ring Group. This allows extensions that are not members of the Ring Group to answer Door Box calls. Extensions with Call Coverage keys to the Door Box Ring Group can also activate the relay.
  • Call Forwarding
    • An extension user cannot forward a call to a Door Box.
  • Hotline
    • An extension user can have Hotline keys for Door Boxes.
  • Message Waiting
    • An extension user cannot leave a Message Waiting at a Door Box.
  • Paging
    • Door Box chimes 1-3 can broadcast over the External Paging speakers. An extension user can dial INTERCOM + 0 to answer the chimes and use their soft keys to control the associated relay.
  • PGDAD Module and Analog Door Boxes
    • The 2PGDAD Module can connect up to two Analog Door Boxes.
  • Single Line Telephones
    • Single line telephones can only receive Door Chime type 0 (normal ring). While connected to the Door Box, an SLT can hookflash to control the system relay.
  • Transfer
    • An extension user cannot Transfer a call to a Door Box.

IntraMail Features

  • None.