System and method for detecting three-way call circumvention attempts
First Claim
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1. A method for detecting an attempt to mask a three-way call, the method comprising the steps of:
- monitoring an audio stream;
detecting that a power level of the audio stream falls below a predetermined threshold;
detecting that the power level of the audio stream exceeds the predetermined threshold at a first time;
detecting a next occurrence of the power level of the audio stream falling below the predetermined threshold at a second time;
calculating an elapsed time from the first time to the second time;
comparing the elapsed time to a predetermined maximum allowable period of time,isolating energy pulses from the audio stream that exceed a predetermined magnitude;
detecting a peak energy within the energy pulses; and
extending the detected peak energy.
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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.
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Citations
18 Claims
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1. A method for detecting an attempt to mask a three-way call, the method comprising the steps of:
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monitoring an audio stream; detecting that a power level of the audio stream falls below a predetermined threshold; detecting that the power level of the audio stream exceeds the predetermined threshold at a first time; detecting a next occurrence of the power level of the audio stream falling below the predetermined threshold at a second time; calculating an elapsed time from the first time to the second time; comparing the elapsed time to a predetermined maximum allowable period of time, isolating energy pulses from the audio stream that exceed a predetermined magnitude; detecting a peak energy within the energy pulses; and extending the detected peak energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for detecting an attempt to mask a three-way call, the method comprising the steps of:
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monitoring an audio stream; detecting when a power level of the audio stream falls below a predetermined threshold; calculating an elapsed time when the power level of the audio stream is below the predetermined threshold; and determining whether the elapsed time exceeds a maximum allowable period of time, isolating energy pulses from the audio stream that exceed a predetermined magnitude; detecting a peak energy within the energy pulses; and extending the detected peak energy. - View Dependent Claims (10, 11, 12, 13)
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14. A system for detecting an occurrence of a three-way call attempt as part of a telephone call, the system comprising:
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an interface port configured to receive audio signals from a telephone; and an energy detector configured to detect an energy of the audio signals; an analyzer configured to analyze the detected energy; and a determiner configured to determine whether a three-way call has been attempted based on the results of the analysis, wherein the interface port is configured to receive the audio signals in a first format and in a second format, wherein the energy detector receives the audio signals in the first format, and wherein the analyzer receives the audio signals in the second format. - View Dependent Claims (15, 16, 17, 18)
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Specification