TONE DATA RECEIVER

TONE DATA RECEIVER

A coded message receiver powered solely by energy withdrawn from telephone lines to which it is connected, monitors the lines and responds to a plurality of different signals of predetermined frequencies transmitted after the receiver station is dialed. Coded signal pulses transmitted at certain of...

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1. Verfasser: GLIDDEN R,US
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
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creator GLIDDEN R,US
description A coded message receiver powered solely by energy withdrawn from telephone lines to which it is connected, monitors the lines and responds to a plurality of different signals of predetermined frequencies transmitted after the receiver station is dialed. Coded signal pulses transmitted at certain of said frequencies are registered by visual and audible indicators and recorded on tape only when transmitted simultaneously with a guard tone signal at another frequency. A terminate switch is actuated to disable the signal responsive monitors and signal registers as well as to transmit a return signal to the telephone lines.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
title TONE DATA RECEIVER
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