System and Method for Detecting Three-Way Call Circumvention Attempts
First Claim
Patent Images
1. A method for detecting an attempted three-way call, the method comprising the steps of:
- monitoring an audio stream;
detecting a hook-flash signal;
calculating, during a time period following the hook-flash signal, an elapsed time during which a power level of the audio stream exceeds a pre-determined threshold; and
determining whether said elapsed time exceeds a maximum allowable period of time.
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Abstract
Disclosed is a three-way call detection system and method for use with a telephone management system. Specifically, a three-way call detection system and method for detecting continuous noise indicative of an attempt to mask a three-way call attempt. The continuous noise detection system and method may be stand alone or used in conjunction with any existing three-way call detection system and method.
10 Citations
20 Claims
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1. A method for detecting an attempted three-way call, the method comprising the steps of:
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monitoring an audio stream; detecting a hook-flash signal; calculating, during a time period following the hook-flash signal, an elapsed time during which a power level of the audio stream exceeds a pre-determined threshold; and determining whether said elapsed time exceeds a maximum allowable period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for detecting an attempted three-way call, the method comprising the steps of:
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monitoring an audio stream; detecting a hook-flash signal; calculating, during a time period following the hook-flash signal, a noise pattern of the audio stream; and determining whether the noise pattern is indicative of a ringer. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus for detecting an attempted three-way call, the apparatus comprising:
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an interface for receiving an audio stream from a telephone line; and a microprocessor coupled to said interface configured to; detect a hook-flash signal; monitor the audio stream for a predetermined time period following the hook-flash signal; calculate an elapsed time, during the predetermined time period, that a power level of the audio stream exceeds a predetermined threshold; and determine whether the elapsed time exceeds a maximum allowable period of time. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification