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Citizens alarm system

  • US 4,040,013 A
  • Filed: 01/09/1975
  • Issued: 08/02/1977
  • Est. Priority Date: 03/13/1973
  • Status: Expired due to Term
First Claim
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1. A method for establishing communication between at least one of a plurality of alarm stations coupled together and to a central station with a plurality of cable loops, said method comprising transmitting from said alarm station to said central station a signal indicative that one of said alarm stations has been activated, receiving said signal at said central station, and coupling the loop of said activated alarm station to a free one of a plurality of operator stations at said central station regardless of any groupings of said cable loops.

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