Unauthorized Call Activity Detection And Prevention Systems And Methods For A Voice Over Internet Protocol Environment

Abstract

Embodiments connect a call in which at least one party is a VoIP call party and monitoring resulting VoIP signals for unauthorized call activity, such as three-way call activity. The monitoring may include monitoring the call for suspend and/or resume events to detect the unauthorized call activity, the suspend and resume events may be generated by a telephone system and passed into a VoIP system associated with the VoIP call party. The monitoring may be carried out by an agent disposed between a VoIP gateway and the VoIP call party or by the VoIP gateway itself.

1 . A method for providing call processing in a prison facility, comprising:
 receiving a request to place a call from a terminal accessed by a calling party in the prison facility;   connecting the call to a called party outside the controlled-environment facility via a Voice over Internet Protocol (VoIP) gateway between the terminal and a phone network; and   detecting three-way call activity in the call by monitoring VoIP signals transmitted between the VoIP gateway and the terminal.