Method and apparatus for defeating a predictive telemarketing system
AssigneeVera-A-Fast
InventorsRobert M. Bensman, Bruce R. Knox
Life of this patent
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Abstract
A method and apparatus for defeating a predictive dialing telemarketing system includes a signal generator in the nature of an oscillator (18) that is capable of creating a 914 Hz sine wave that substantially imitates the first tone of an intercept Special Information Tone used by the telephone network to indicate a nonworking number. The oscillator (18) is amplified with an amplifier (22). The imitation signal is selectively sent in response to the incoming call when a controller (12) closes a relay (20) to connect the imitation signal to the telephone line (16). The controller (12) is prompted to close the relay (20) by an off-hook detector (14) that indicates to the controller (12) when a voice signal is established.
Claims13
An apparatus in communication with a telephone line for defeating predictive dialing telemarketing systems that remove telephone numbers from their systems that respond with a Special Information Tone, comprising:
- a signal generator that generates a false signal substantially similar to at least a first part of a Special Information Tone,
- an off-hook detector, and
- a controller in communication with said off hook detector that sends said false signal in response to all answered incoming calls on the telephone line.
A method for defeating predictive dialing telemarketing systems that remove telephone numbers from their systems that respond with a Special Information Tone, comprising the steps of:
- generating a false signal that is substantially similar to at least a part of a Special Information Tone,
- detecting an off-hook condition in a telephone line, and
- sending the false signal to all incoming telephone calls upon detection of an off hook condition.
Dependencies are inferred from the claim text.