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Active security system

  • US 7,053,765 B1
  • Filed: 11/02/2004
  • Issued: 05/30/2006
  • Est. Priority Date: 11/02/2004
  • Status: Expired due to Fees
First Claim
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1. A method for actively maintaining security of a premises, comprising the steps of:

  • establishing a security digital subscriber line connection over a public switched telephone network line between one or more local security controllers and a subscriber control unit located at a monitoring station located remote from the premises;

    transmitting a security data packet between the local security controller and the monitoring station at a predefined periodic rate at a frequency that will not substantially interfere with ordinary use of public switched telephone network line for voice communications; and

    initiating a check of the premises if the monitoring station does not receive the security data packet within a predetermined time frame.

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