Reception system for key telephone system
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United States of America Patent
Stats
-
Dec 25, 1984
Grant Date -
N/A
app pub date -
Jul 30, 1982
filing date -
Aug 3, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reception system for a key telephone system, in which a voice signal and a control signal having the form of a frequency shift signal are multiplexed in an intercom line for transmission. In accordance with the present invention, there is provided means for extending by a predetermined period of time the period of a first clock pulse at the time of a key service unit transfering from the transmitting state to the receiving state, so that the center of data transmitted may coincide with the readout timing for reception. The means for extending is arranged so that it may apply a reset pulse to a reset terminal of a frequency divider of an oscillator for generating the lock pulses.
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