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Automatic telephone message interception system

  • US 4,345,113 A
  • Filed: 01/14/1980
  • Issued: 08/17/1982
  • Est. Priority Date: 01/14/1980
  • Status: Expired due to Term
First Claim
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1. An automatic telephone message interception system adapted to be coupled in series with a telephone transmission line and a telephone instrument for connecting an incoming telephone call on said transmission line to an information storage means without ringing said telephone instrument, comprisingfirst means, coupled to said transmission line and said telephone instrument, for electrically disconnecting said transmission line from said telephone instrument and normally maintaining said transmission line electrically disconnected from said instrument,second means, coupled to said first means and to said telephone transmission line, for detecting a first coded transmission signal transmitted on said transmission line during an incoming telephone call and connecting said transmission line to said information storage means in response to the detection of said signal, andthird means, coupled to said first means, second means and said transmission line, for detecting a second coded transmission signal transmitted on said transmission line during said incoming telephone call and disconnecting said transmission line from said information storage means in response to the detection of said second signal.

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