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1.3 Cabinet, Relay and Component Identification
The Large Main Control Cabinet houses the main processor control board and up to 9 line interface
boards. The Garden Style Main Control Cabinet houses the main processor control board and up to
4 line interface boards. Large Auxiliary Cabinets can hold up to 12 line interface boards and a power
supply board. Garden Style Auxiliary Cabinets can hold up to 8 line interface boards.
1.3.1 Main Control Cabinet Options
If the 1820 system is interfacing with 48 or less phone lines, the Garden Style Cabinet is typically
used since no auxiliary cabinets will be required. If the 1820 system is interfacing with more than 48,
but less than 108 phone lines, then the larger 1820 Main Control Cabinet will be used.
1.3.2 Auxiliary Cabinet Options
Either garden style or large type cabinets can be used to hold additional line interface boards as
required by the number of phone lines the system needs to interface with. The Garden Style Cabinet
can hold up to 8 line interface boards, or 7 line interface boards and 1 power supply board. The
Large Auxiliary Cabinet can hold up to 12 line interface boards and a power supply board.
Board
11
Board
10
Board
9
Board
8
Board
Relay
Address
0132-0143
Board 11
11
0120-0131
Board 10
10
0108-0119
Board 9
09
0096-0107
Board 8
08
Page 14
Board
7
Board
6
Board
5
Board
4
Board
Relay
Address
0084-0095
Board 7
07
0072-0083
Board 6
06
0060-0071
Board 5
05
0048-0059
Board 4
04
Board
3
Board
2
Board
1
Board
0
Board
Relay
Address
0036-0047
Board 3
03
0024-0035
Board 2
02
0012-0023
Board 1
01
0000-0011
Board 0
00
DOORKING, INC., INGLEWOOD, CA 90301
Main Cabinet / Auxiliary Cabinet - Small
Title:
Board Layout
Date:
4/05
Dwg. No.
A
M1820-065-4
Rev.
1820-065-B-2-06
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