DoorKing Inc.
120 Glasgow Avenue
Inglewood, CA 90301
Toll-free: 800-826-7493
Fax: 310-641-1586
E-mail: info@doorking.com
Web site: www.doorking.com
Telephone Intercom Systems
DoorKing's telephone intercom systems uniquely provide full duplex telephone communication to, and control of, a door or gate without the need of a dedicated telephone line. This eliminates monthly line access charges and equipment lease payments to the telephone company.

1816 Telephone Intercom System
1816 - Commercial Multi-Unit System: DoorKing's model 1816 commercial telephone intercom system is perfect for multi-unit buildings of any size. This system provides full duplex communication and door or gate control through the buildings existing telephone lines. This eliminates the need to install and maintain costly intercom wiring networks, and allows residents to use their existing telephones for communication and control. The 1816 is very popular with government housing authority projects because even if tenants do not have central office phone service, the 1816 system allows communication to take place from their apartment to the front entry panel. The tenant need only purchase a touch-tone telephone and plug it into the phone wall jack in their apartment. The 1816 system provides a resident with a double ring to differentiate between a call from a visitor at the lobby panel, or from an incoming telephone call. The call waiting feature signals a resident on an outside call that a visitor is attempting to contact them from the lobby. The tenant can place their outside call on hold, speak to the visitor in the lobby and grant or deny them access, and then switch back to their call.

Phone Line Interface: The 1816 system interfaces with the telephone lines via RJ71C phone blocks. Each of these phone blocks interfaces with 12 central office phone lines and routes them through the 1816 system. One RJ71C phone block must be installed for every 12, or multiple thereof, phone lines in the building. One connecting cable, DoorKing part number 1882-042, and one relay board, DoorKing part number 1882-010, is used for each RJ71C phone block installed. This connecting cable provides a quick means to route the 12 phone lines from each RJ71C phone block through the relay boards in the 1816 system, and comes in a standard length of 15 feet. The maximum number of phone lines that the 1816 system can interface with is 3132, or a total of 261 RJ71C's, connecting cables, and relay boards.

1816 Main Control Cabinets and Auxiliary Cabinets: The 1816 main control cabinet houses the main processor board and a limited number of relay boards. The main control cabinet is housed away from the main entry to help guard against vandalism. Two main control cabinets are available. The small main control cabinet, DoorKing part number 1816-082, will accommodate up to a maximum of five relay boards, which will allow it to interface a maximum of 60 (5 x 12) phone lines. If more than 60 phone lines are to be connected to the 1816 system, use the large main control cabinet, DoorKing part number 1816-080. The large main control cabinet will accommodate up to a maximum of 13 relay boards, which will allow it to interface with up to 156 (13 x 12) phone lines. If more than 156 phone lines are to be connected, auxiliary cabinets can then be added to the system. Each auxiliary cabinet will accommodate up to a maximum of 16 relay boards, allowing for an additional 192 phone lines per auxiliary cabinet to be connected to the system. This sequence of adding auxiliary cabinets can continue until the maximum number of phone lines, 3132, is reached. The small main control cabinet measures 21 inches high, 12 1/2 inches wide, and 4 1/8 inches deep. The large main control cabinet and auxiliary cabinets measure 35 1/4 inches high, 12 1/2 inches wide, and 4 1/8 inches deep.

Decoder Boards: Decoder boards, DoorKing part number 1881-010, are required when more than five relay boards (60 phone lines) are to be used with the system. After the first five relay boards are installed, one decoder board must be installed for every eight, or fraction there of, relay boards used. Decoder boards are installed in the large main, and auxiliary cabinets.

Lobby Panels: Lobby panels are installed next to the door or gate that is to be controlled. The lobby panel is the device that a visitor uses to establish communication to a tenant. All DoorKing telephone entry system units can be installed as a front lobby panel for the 1816 system. Multiple front lobby panels can be connected to a single 1816 system. In addition to our standard entry systems, vandal resistant lobby panels are available for housing authority projects.

Power and Wiring Requirements: In addition to the phone line interface wiring described above, main control cabinet power is supplied by a 16.5 volt, 40 VA transformer supplied with the system. If more than five relay boards are used in the system, a second 16.5 volt, 40 VA transformer, supplied with the system, is required for decoder board power. Each lobby panel is powered by a 16.5 volt, 20 VA transformer supplied with the lobby panel. Power wiring should be kept as short as possible. Use 18 AWG, 600 volt insulated wire for power runs up to 100 feet. Use 16 AWG, 600 volt insulated wire for power runs up to 200 feet. Do not run any low voltage power over 200 feet. Wiring from the main control cabinet to the lobby panel is a single pair, twisted, telephone line, 22 AWG wire, maximum distance up to 1600 feet.

1816 Programmable Features: The 1816 provides many programmable features that allow the system to be fine tuned to meet most any application need. The following items are user programmable: master code, directory codes (any number between 0000 and 3132), four-digit entry codes, relay activation time (1 - 99 seconds), number of rings allowed before the system hangs up (2 - 9), regular or double ring, tone open numbers, relay functions (momentary activate, latch, unlatch, latch one hour with automatic unlatch), talk time programming (3 seconds - 5 minutes), outside line access code (if optional central office line is installed), ten pre-programmed phone numbers (for use with optional central office line), the ability for management to contact a tenant by telephone through the system even if the tenant does not have central office service (with optional central office line installed), and the ability to turn the lobby panel on or off.

1812 - Residential System: The 1812 residential telephone intercom system provides many unique features and advantages over a dedicated auto-dialer type system or a standard intercom system. The 1812 does not need a dedicated central office phone line to operate, thus eliminating a monthly charge from the telephone company for the line. This full duplex system allows the resident to use any telephone in their house, eliminating the requirement to use only an intercom sub-station or to press a button to talk back. The system is wired in series with the residents incoming telephone line. When a visitor presses the "Push To Call" push button, the system sends a unique "double" ring to the residents telephones. This double ring feature allows the resident to identify the call as a visitor at their door or gate, rather than a regular incoming telephone call. Once identification is established, the resident can grant access by pressing the number "9" (or any number that has been programmed to activate the 1812 relay) on their phone, or can deny access by simply hanging up. If the resident is on the telephone when a visitor presses the push to call button, the systems call waiting feature will sound a tone in the residents telephone. The resident can then place the outside call on hold, talk to the visitor and grant or deny access, then switch back to their call. The call forwarding feature will forward any call from the 1812 to a pre-programmed telephone number. This feature can be automatically activated by programming a call forwarding time zone, or can be manually turned on or off from the residents telephone. This is useful when the resident may be away from the house, but does not want to miss any calls from the 1812 system. In addition to the call forwarding number, the resident can program up to three additional numbers that can be called from the system by simply pressing "01", "02", or "03" on the system keypad. The 1812 also includes a programmable seven day time clock. The time clock can be used to time zone restrict certain entry codes, automatically activate and deactivate the systems relays at predetermined times, and be programmed for "do not disturb" times so that calls from the system will not ring the house phones. Other features include four digit entry codes, two form "C" dry contact relays, each of which have four functions: activate for programmed strike time, latch, unlatch, latch for one hour with automatic unlatch. The 1812 is available as a surface mount unit with a black housing and a brushed stainless steel face plate, or can be ordered as a flush unit with a brushed stainless steel face plate or a polished brass face plate. The surface mount unit measures 6 1/8 inches high, 10 inches wide, and 5 1/4 inches deep at the top, 2 7/8 inches deep at the bottom. The flush mount units measure 7 1/4 inches high, 11 inches wide. The back box is 6 1/2 inches high, 10 3/8 inches wide, and 3 3/16 inches deep. The 1812 is powered by a 24 volt, 20 VA transformer supplied with the system. Maximum power wiring distance is 100 feet using 18 AWG, 600 volt insulated wire, or 200 feet using 16 AWG, 600 volt insulated wire. Telephone line wiring must be of a high quality type wire suitable for direct under ground burial. Two twisted pair (4 wires) must be run from the telephone company demarcation (interface) device to the 1812. A by-pass switch is provided for easy phone line connections. Phone lines may be run a maximum of 3600 feet using 18 AWG wire.