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Doorking 1820 User Manual Page 21

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2.2 Wiring Detail – Large Main Cabinet
DOORKING, INC., INGLEWOOD, CA 90301
Date: Dwg. No.
1820 Telephone Intercom System
Wiring Detail
Rev.
Title:
4/05
A
M1820-065-6
17 21151413 20191811 12 16 23 2422
1820 Telephone Intercom System
Wiring Detail - Large Control Cabinet
C.O.
PHN
16 VAC
PWR
INPUT
INCOMING
C.O. PHN
LINES
7
8
3
Resident
Telephone
1
2
5
Lobby Panel
9
10
11
4312
2
Earth Ground.
3
Optional Central Office phone line - touch tone, loop start.
4
Doorman / Concierge Telephone (Optional).
5
Lobby panel. Connect additional lobby panels in parallel. Refer to lobby panel installation manual for
additional wiring requirements.
6
Use twisted pair wires for phone connections. 24 AWG up to 800 feet; 22 AWG up to 1600 feet.
7
8
RJ71C phone block. See drawing M1816-065-6 for detail.
9
Incoming phone lines from Central Office.
10
Outgoing phone lines to individual apartments.
11
DoorKing connecting cable.
12
RS-485 connecting cable.
13
To additional Line Interface Boards
Decoder board terminals. Used with 1816 systems only.
13
12
12
13
16 Volt, 50 VA UL Listed Transformer.
1
Doorman Telephone
4
6
6
1820-065-B-2-06 Page 21
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