Systems and methods for facsimile echo cancellation

Details Systems and methods for facsimile echo cancellation Systems and methods for facsimile echo cancellation

2005-05-09

2010-10-05

Gauthier, Gerald (Department: 2614)

Multiplex communications

Duplex

Transmit/receive interaction control

C370S218000, C370S252000, C370S331000, C370S352000, C455S412200

Reexamination Certificate

active

07808936

ABSTRACT:
The present invention is related to methods and systems for reducing or canceling echoes during fax communications. In an embodiment, during a fax call, a first fax signal from a first fax device intended for a second fax device is detected. Based at least in part on detecting the first fax signal from the first fax device or on the termination of the first fax signal, an echo audio packet is muted, wherein the echo audio packet is at least partly the result of the first fax signal being transmitted over a network, the network including at least a data network.

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