Bell 6B KTS Manual page 56

Key telephone system
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SECTION S 1 8-41 1 - 1 00
TO J 19B
1ST 488A KTU
TO J21B
2ND 488A KTU
TO J23B
3RD 488A KTU
TO J25B
4TH 488A KTU
Fig. 32-Connections Between Plugs 1 2 and 1 to 4 of 572A 1 Key Service Unit and 1 84C1 Backboard (Sheet
1 of 5)
Page 56
B S P 518-411·100-i01 1978·08-SG.jpg
572A1 KSU
PLUG
B 1 1
B31
B 1 4
B 1 2
B32
B15
B 11
B31
B 1 4
B 1 2
B32
B15
B 1 1
B31
B 1 4
B 1 2
B32
B15
B 1 1
B31
B 1 4
B 1 2
B32
B 1 5
Scanned b y Fra n k H arrell, (Cowboy Frank) Castle Rock, Colorado O c t 15, 2 0 1 2 2 1 : 1 5 : 1 1
A25B
CONNECTOR CABLE
12
1
27 (
2 (
28 (
3 (
4 (
3 C (
5 (
31 (
8 (
32 (
7 (
33 (
8 (
34 (
9 (
35 (
1 1
37 (
12 (
39 (
14 (
40 (
15 (
1 8 (
42 (
44 (
19 (
20 (
47 (
24 (
50 (
25
1 84C 1 BACKBOARD
BLOCK A
COLUMN A
1
A ( 1 )
2 )---<
L ( 1 )
A (2 )
5 )
L (2 )
A (3 )
L (3 )
A (4 )
L (4 )
A (5 )
L (5 )
A (S )
L (S )
A (7 )
40
L (7 )
A (B )
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u
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