Patent ID: 8917639

Claim:
A method of decreasing false audio associated with voice-over-Internet protocol, the method comprising: receiving a false audio packet by an egress gateway, the false audio packet including false audio, the false audio being generated by misclassification of a dual-tone multi-frequency signal as a voice signal, the voice signal being transmitted over a communication network; receiving a dual-tone multi-frequency packet by the egress gateway, the dual-tone multi-frequency packet being received subsequent to the false audio packet, the dual-tone multi-frequency packet being associated with a portion of the dual-tone multi-frequency signal; deconstructing the false audio packet by the egress gateway to extract the false audio; replacing the false audio with a substitute signal by the egress gateway in response to deconstructing the false audio packet; and storing payload data representing the false audio in response to deconstructing the false audio packet, wherein replacing the false audio in the false audio packet comprises replacing the payload data with zeroes.