Securus Technologies, Inc.

Evercom Systems, Inc.

Science Dynamics Corporation

Thomas R Spadaro

Kishan Shenoi

Robert L Rae

William Salibrici

William J Salibrici

Fredrick W Miller

Amr E Abdelwahab

Martin L Knodle

Michael S Jaeger

Disclosed are systems and methods which provide call processing for a plurality of telephones at a site for which calling services are provided. Call control functionality is distributed to remote locations using data networks according to embodiments. The aforementioned data networks and/or separate data networks are used to carry call content using voice over Internet protocols (VoIP). Embodiments utilize VoIP to carry calls from a location at which calling services are provided to a centralized call processing platform providing call processing functionality, such as calling party identification, call validation, call routing, and connection to the public switched telephone network (PSTN). PSTN interfacing by a call processing platform may be provided as a VoIP connection to the PSTN and/or as POTS trunking. Call processing platforms may provide for data sharing, aggregation, and/or analysis across multiple facilities served.

Call processing with voice over internet protocol transmission

Controlled public telephone communication systems includes a plurality of telephones at a given site, a programmable control computer for switching, accessing, routing, timing, billing, and the control of the telephones at the site and a Voice over Internet Protocol (VoIP) network connecting the telephones to an off site public switched telephone network. The programming of the control computer is distributed to remote locations over the VoIP network. A data exchange network interconnects other sites with the telephone communications system being integrated into the data exchange network.

Public telephone control with voice over internet protocol transmission

Disclosed is a three-way call detection system that uses digital signal processing to identify a third party connection. The disclosed invention operates by establishing a baseline ambient, or background, noise level, and detecting when the signal noise level drops below the ambient noise level. When the current signal noise level drops below the ambient noise level, the system assumes that a three-way conference call has been attempted by the called party.

Three-way call detection system

Growing community of inventors

Burlington, NJ, United States of America

Thomas R Spadaro