(57) ABSTRACT A system for detecting three-way calls in a monitored telephone
conversation includes a speech recognition pro cessor that transcribes the monitored …

7,596,498 B2* 9/2009 7,639,791 B2 12/2009 7,664,243 B2 2/2010 7,672,845 B2 3/2010
7,698,182 B2 4/2010 7,826,604 B2 11/2010 7,860,222 B1 12/2010 7,961,860 B1 6/2011 …

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Secure system and method of detecting and preventing inmate to inmate message relays. A
system and method which monitors inmate communications for similar phrases that occur as …

In a multi-channel acoustic echo cancellation, received signals in a plurality of channels are
radiated as acoustic signals by a plurality of loudspeakers, received signal vec tors in these …

(Continued) presence of the hidden signal or data generated by the invention. Once
detection is achieved, appropriate action, Such as terminating or recording the call, may be …

US6895086B2 - 3-Way call detection system and method - Google Patents US6895086B2 -
3-Way call detection system and method - Google Patents 3-Way call detection system and …

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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 …

Disclosed herein is an inmate call monitoring station includ ing a processor and/or circuit
configured to display data regarding a plurality of inmate communications occurring in a …