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Wireless telephone system with high level dial pulse signalling

  • US 4,468,538 A
  • Filed: 12/16/1982
  • Issued: 08/28/1984
  • Est. Priority Date: 12/16/1982
  • Status: Expired due to Fees
First Claim
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1. A wireless extension telephone system comprising:

  • a remote unit including a radio transmitter, a signal generator operated to produce tone signals of a predetermined frequency, a modulator connected between said generator and said transmitter, operated to modulate said transmitter, said transmitter operated to transmit radio signals modulated at the frequency of said tone signals, amplitude control means connected to said modulator, limiting said modulated radio signals to a first amplitude, a dialing circuit connected to said amplitude control means, operated to generate a selected quantity of dial pulses and on response to each dial pulse, said amplitude control means operated to limit said modulated radio signals to a second amplitude; and

    a base unit connected to a telephone line including, a radio receiver and dial pulse detection means connected between said receiver and said telephone line operated in response to receipt by said receiver of signals of said second amplitude to pulse said telephone line.

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