Bell 6B KTS Manual page 57

Key telephone system
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TO
FUSE 1
TO JSB
1ST 48
4A KTU
TO J7B
2ND 48
48 KTU
TO
FUSE 2
Fig. 32 -Connections Between Plugs 1 2 and 1 to 4 of 572A 1 Key Service Unit and 1 84C1 Backboard (Sheet
2 of 5)
BSP 518-411-100-i01_1978-08-57.jpg
572A1 KSU
P 1
826
87
828
827
88
89
80 �
812
832
831
810
8 1 1
830
829
8 1 3
833
8 1 4
835
834
815
816
82
8 1 9
838
8 1 8
836
86
827
87 �
828
B27
BB
89
BO
Scanned by Fra n k H arrell, (Cowboy Frank) Castle Rock, Colorado Oct 15, 2012 2 1 :1 5 : 3 1
A25B
CONNECTOR CABLE
I
(W-BL )
(BL-W )
1
27 �
(O-W)
2 �
(W-G)
3 �
2 9 �
(BR-W)
4 �
30 �
(S-W)
s E
(R-BL )
6 �
(R-0 )
32 �
7 E
(R-G )
33 E
(G-R )
a
(R-BR )
34
(BR-R)
9 �
35 �
(S-R I
10 E
(BK-BL )
36 E
(BL-BK )
1 1 �
37 �
(0-BK )
12 �
(BK-G)
38 E
(G-BK )
13 E
(BK-BR )
(BR-BK )
1 4 E
(BK-S )
40 E
(S-BK)
(BL-Y)
16 E
(Y-O )
(0-Y)
17 �
(Y-G )
(G-Y )
44 �
(BR-Y )
(Y-S)
45 E
(S-Y)
46 E
21 E
( V -0)
47 �
(0-V )
22 E
48 E
(G- V )
(BR- V )
24 E
so
(S- V )
25
ISS 1, SECTION 5 1 8-4 1 1 - 1 00
184C1 BACKBOARD
(SEE TABLE E )
BLOCK A
COLUMN E
1
T
R
A
L
TO
STATION
LG
H
B
BZ
8Z1
T
R
A
L
TO
LG
STATION
H
B
BZ
BZ1
T
R
A
L
TO
STATION
OR 62
8Z1
L
TO
LG
STATION
H
OR 63
B
BZ
BZ 1
T
R
A
L
TO
STATION
OR 64
B
BZ1
1 0
1 1
12
1 3
14
Page 57

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