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Off-hook disconnect and reconnect ringer device

  • US 5,612,997 A
  • Filed: 09/05/1995
  • Issued: 03/18/1997
  • Est. Priority Date: 02/02/1995
  • Status: Expired due to Term
First Claim
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1. An off-hook disconnect and reconnect ringer device for a telephone connected to a telephone line of a telephone company which provides tones for warning of an off-hook condition of said telephone, comprising:

  • means for detecting at least one of said tones transmitted through said telephone line of said telephone which is off-hook, wherein said means for detecting said tones comprises four integrated circuits, each preset to decode a specific frequency for detecting if said telephone is off-hook;

    means for producing a signal indicating that an off-hook condition of said telephone has been detected;

    means for disconnecting said off-hook telephone from said telephone line after receiving said signal;

    means for signaling that said off-hook disconnect and reconnect ringer device is receiving an incoming telephone call through said telephone line of said off-hook telephone;

    means for electronically resetting said off-hook disconnect and reconnect ringer device for reconnecting said telephone with said telephone line for answering the incoming telephone call; and

    means for adjusting the frequency of said integrated circuits.

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