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DoorKing 1820 Telephone / Intercom with Call-Down
The Model 1820 telephone intercom system is a unique communication and access control device that
provides voice communication and control of a door (or gate) via the residents own telephone without the
need of a dedicated central office (C.O.) phone line.   The 1820 has an advanced "call-down" feature that
allows residents to be connected directly to a doorman, concierge or security office by simply pressing two
buttons on their touch-tone telephone.   The systems caller ID feature lets the resident know if a call is
coming from the lobby panel, doorman or concierge phone.   In addition, the 1820 allows each resident to
control call forwarding, call waiting and do-not-disturb features directly from their own telephone.   The 1820
eliminates the need of a costly hard-wired intercom system and monthly line charges and lease payments to
the phone company.    The 1820 telephone intercom system is ideal for condominium buildings, apartment
buildings, college resident halls and office buildings where controlling access into the building is an essential
part of your security program.

The 1820 is a component style system that consists of a lobby panel(s), main control cabinet(s) and line
interface board(s). The system is built in accordance with the number of telephone lines to be interfaced
with.

OPTIONS FOR THIS MODEL
Main cabinet can house up to 9 LIB's to interface with up to 108 phone lines.
Auxiliary cabiner can house up to 12 LIB's to interface with up to 144 phone lines. Additional auxiliary
cabinets can be added as needed, up to 1200 phone lines for the system.
Garden style cabinet will house up to 4 LIB's to interface with up to 48 phone lines.
ADVANCED FEATURES
Resident call down feature.
Caller ID.
Resident activated/deactivated call waiting.
Resident activated/deactivated do-not-disturb.
Resident activated/deactivated call forwarding.
True full duplex communication.
Interfaces with all DKS telephone entry/access control
systems.
Residents do not need central office (C.O.) telephone
service to be connected to system.
Directory codes can be programmed to numbers of your
choice.
No reprogramming required when residents move in or out.
Double ring feature identifies lobby panel call.  
SPECIFICATIONS
Interfaces with up to 1200 telephone lines.
Full duplex communication.
Stores up to 10 preprogrammed call out numbers.
Doorman telephone input.
Programmable directory codes.
16 VAC, 50 VA power transformer (main cabinet).
16 VAC, 50 VA power transformer (auxiliary cabinets).
Main & Auxiliary Cabinets: 35.25"H x 13.25"W x 5.0"D.
Garden Style Cabinets: 21.25"H x 13.25"W x 5.0"D.
System requires one (1) main control or garden cabinet,
one (1) line interface board (LIB), one (1) connecting cable
and one (1) RJ71C phone block for every 12 phone lines
that the system will interface with.
ACCESSORIES AVAILABLE FOR THIS MODEL
Several different types and styles of lobby panels can be connected to the 1820 system. Contact your professional
DoorKing dealer for more information.
Surge suppressors.
Doorking 1820 Telephone Intercom System provides voice communication and control of a
door (or gate) via the residents own telephone without the need of a dedicated central office
phone line. The 1820 eliminates the need of a costly hard-wired intercom system, monthly
line charges and equipment lease payments. The 1820 is ideally used in apartment
buildings, college resident halls, high rise condominiums and office buildings where
controlling access into the building is an essential part of your security program.
The DKS 1820 features a simple to use "Call Down"
feature. By pressing just two buttons on their touch-tone
telephone, the resident is connected directly to the
Doorman or Concierge (or any other station designated
as the call down station) without having to dial a 7 or 10
digit telephone number
The 1820 puts the resident in charge of their calls! From
their touch-tone telephone, each resident can program
in a Call Forwarding number if they wish to receive lobby
panel calls while they are out of their home. They can
even reject all lobby panel calls during certain hours with
the “Do-Not Disturb” function
Every resident is connected even if they don’t have
central office phone service. Just plug a touch-tone
telephone into the phone jack in your apartment.
1820 Spec Sheet (English)        1820 Spec Sheet (Spanish)        1820 Manual
Step 1 - Select One- Main Control Panel
Step 2 - Select Realy Board
Step 4 - Select Auxiliary Cabinets (If Required)
Step 3 - Select Decoder Board (If Required)
Entry System Circuit Boards
Doorking 1820-080 Large Main Control Cabinet  $1,104.00
Large main control cabinet can house up to 9 Line Interface Boards to interface with up to 108
phone lines.
Doorking 1820-082 Garden (Small) Control Cabinet  $972.00
Garden (small) control panel can house up to 4 Line Interface Boards to interface with up to 48
phone lines.
Doorking 1884-010 Line Interface Board  $768.00
Each Line Interface Board interfaces with up to 12 phone lines. Divide the total number of phone
lines by 12, then round up to the nearest whole number. Example: 270 phone lines divided by 12
equals 22.5. Round up to 23.
Doorking 1886-010 Power Supply Module - Main Control Cabinet  $129.60
The Main Control Cabinet will power up to 21 Line Interface Boards. One (1) Power Supply Module
is required for every 21 Line Interface Boards mounted within 200 feet of the main cabinet.
Requires 1508-060 power transformer.
Doorking 1820-081 Large Auxillary Cabinet  $324.00
Large auxiliary cabinet holds up to 12 Line Interface Boards and 1 Power Supply Module.
Doorking 1820-083 Garden Style Auuxillary Cabinet  $198.00
Garden Style auxiliary cabinet holds up to 8 Line Interface Boards or 7 Line Interface Boards and 1
Power Supply Module.   
RJ71C Phone Book - Powered  $156.00
RJ71C Phone Book. 1 Required for Each Relay Board  $135.60
Connecting Cable - 15 Ft. 1 Required for each RJ71C phone book  $52.80
Step 5 - Select Phone Blocks and Cables
Keypads & Telephone Entry Systems
Gate Operator Circuit Boards
Remote Controls
Loop Detectors & Safety Equipment
Receivers