Bell System BSX - Wiring Diagrams; BSX2 PCB Layout Diagram; Wiring to Phones Diagram

BSX Isolated Audio Entry System
PD-142 Issue 1 Installation and Operating Manual Page 27 of 32
Wiring Diagrams
BSX2 PCB Layout
Wiring to Phones
PROG
FS7
FS4
FS3
FS8
FS5 FS1
FS2
FS6
––
–
–
–
–
(10)
(12) (14) (16)
(9)
(11)
(13)
(15)
Phone 2
Phone 4
Phone 6
Phone 8
Phone 1
Tone Volume
Phone 3
Phone 5
Phone 7
Off
On
SW1
C
1
L L L L
L
L L L
V V V V
V
V V V
Z Z Z Z
Z
Z Z Z
T T T T
T
T T T
0 0 0 0
0
0 0 0
R R R R
R
R R R
I I I I
I
I I I
Expansion
Time Clock
Push Buttons
DDA Display
Speech
+
–
+ + + +
NO
+
LRLSLLLC
Trade
B9
TRHC
Power
+
Lock
Eng
DoorExit
B1
P8P7P6P3P2 P4 P5P1
Lock
Engaged
Test
Status
B
S
X
2