Echo canceler with automatic enablement/disablement on a per-call basis
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United States of America Patent
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Jun 25, 1996
Grant Date -
N/A
app pub date -
Nov 29, 1994
filing date -
Nov 29, 1994
priority date (Note) -
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Abstract
Echo cancellation can be enabled to cancel echoes on an outbound transmission path based on original signals on an inbound transmission path. A controller of echo canceler enablement monitors digitized control information contained in call origination messages associated with the establishment of communications. A determination of the type of digitized information to be carried by a two-way communication channel is made. The controller causes the echo canceler to be enabled or disabled on a per-call basis based on the type of digitized information. A stand-alone echo canceler provides automatic enablement/disablement on a per-call basis based on the type of digitized information to be carried on a communication channel as determined by monitoring associated control messages.
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