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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.
DOORKING, INC., INGLEWOOD, CA 90301
Title:
Date: Rev.Dwg. No.
A
Main Cabinet / Auxiliary Cabinet - Small
Board Layout
M1820-065-44/05
03
02
01
Board
Address
00
0036-0047
0024-0035
0012-0023
0000-0011
Relay
Board 3
Board 2
Board 1
Board 0
07
06
05
Board
Address
04
0084-0095
0072-0083
0060-0071
0048-0059
Relay
Board 7
Board 6
Board 5
Board 4
11
10
09
Board
Address
08
0132-0143
0120-0131
0108-0119
0096-0107
Relay
Board 11
Board 10
Board 9
Board 8
Board
0
Board
3
Board
2
Board
1
Board
4
Board
7
Board
5
Board
6
Board
8
Board
10
Board
9
Board
11
Page 14 1820-065-B-2-06