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CARRIER RELAYING
of
communication is employed where the opera
tor
pushed
a
switch on the handset to start
carrier and connect the microphone to the car
rier transmitter.
During
period,
the
operator
WESTINGHOUSE
METER DIVISION
the
listening
releases
the
switch.
ELECTRIC
Whenever
the
handset is plugged in or lifted
from the desk stand, the carrier alarm circuit
is
opened to prevent ringing during conversa
tion.
This
alarm
circuit
ringing.
CORPORATION
E
4i-600 . 6
l.l.
is used for
code
NEWARK, N.J.
Printed in U.S.A.
I
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