×

System and method for detecting three-way call circumvention attempts

  • US 10,057,398 B2
  • Filed: 10/21/2015
  • Issued: 08/21/2018
  • Est. Priority Date: 02/12/2009
  • Status: Active Grant
First Claim
Patent Images

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.

View all claims
  • 8 Assignments
Timeline View
Assignment View
    ×
    ×