Nms Communications Corporation

Natural Microsystems Corporation

Paul R Kerr

Bruce C Levens

Daniel F Daly

William S Hoge

R Brough Turner

Gary Girzon

Wendell E Bishop

Michael Katz

Julius Rothschild

Chuck Linton

Keith Leo

Edward R Coleman

Dan Daly

Adam Machalek

A method of facilitating telephony communications over a packet-switched network includes detecting signaling tones in an audio stream and blocking them from the stream in response to the detecting. After the blocking, the audio stream is sent over an undependable channel in the packet-switched network. The detected signaling tones can be sent over a dependable channel instead of the undependable audio channel.

DTMF tone detection and suppression with application to computer telephony over packet switched networks

A signal processing system includes a control processor that has a bi-directional port, signal processors that each have a serial port, a bridge that has serial ports each operatively connected to a serial port of one of the signal processors, and a bi-directional port operatively connected to the bi-directional port of the control processor.

Processor interconnection

A system for connecting telephony equipment to computer network equipment includes a telephony interface module adapted to accept at least one telephony connection from a telephony network. A computer network interface module is adapted to accept at least one data connection from a computer network. A signal processing module is adapted to alter data to be transferred between the computer network interface module and the telephony interface module. A bypass mechanism is adapted to transfer data between the telephony interface module, the computer network interface module, and the signal processing module while bypassing a host processor connected to the telephony interface module, the computer network interface module, and the signal processing module.

Global packet-switched computer network telephony server

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Natick, MA, United States of America

Paul R Kerr