A system and method for echo cancellation

Details A system and method for echo cancellation A system and method for echo cancellation

H - Electricity

04

B

H04B 3/23 (2006.01) H04M 3/18 (2006.01)

Patent

CA 2289275

A line card for coupling a subscriber line to a switching network the line card comprising an echo canceling circuit for reducing an echo signal received from the network and perceived at a user instrument coupled to the subscriber line. The network echo cancellation circuit utilizes a network model to predict an echo replica signal which is then subtracted either from the transmit or receive signals to the network The line card may include a far end echo cancellation circuit, a near end echo cancellation circuit or a combination of both.

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