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LAYOUT
FRONT VIEW
Pitch
Control
PCB LAYOUT
Exchange Line
Screw Connections
External Speaker
Screw Connections
Exchange
Line RJ
Pitch Control
Cable entry hole in the lower
left-hand corner of the tone-
ringer case
SCREW TERMINALS
P2
1
2
3 4
External
Line
Speaker
In
Direct
Working
Mounting hole
(J2)
Hytel
(J5)
Cover-release clip is at centre of
tone-ringer case
.
Four screw terminals are provided on terminal block P2.
The left hand pair are used to connect an optional external horn speaker
(Cat # K3505). The Internal/External speaker selection jumper (J1) must be
moved to "EXT" (position B) if an external speaker is used.
The right-hand pair can be used to connect the ringer to the telephone line.
The tone-ringer is wired in parallel across the exchange line (or analog
telephone socket).
The tone-ringer can also be connected to the telephone line by using a 6
position U.S. modular plug. The connection to the telephone line is wired to
pins 3 & 4 (the centre two contacts) of the RJ plug. The RJ plug is then simply
inserted into the RJ "Line In" socket on the tone-ringer PCB .
Volume
control
Power
switch
Internal
Speaker
Connection (J3
Normal/Reduced
Tinkle (J4)
Internal/External
Speaker Selection
Volume Control
Mounting hole
)
ON/OFF
Switch
3
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