Patent ID: 7120130
Filing Date: 2006-10-10
Classification: H04B

Abstract:
1. An apparatus for processing a telecommunication signal, comprising: a first signal processor, including a first multi-channel echo canceller, for performing a signal processing function, including echo cancellation, upon a telecommunication signal and for producing a first processed telecommunication signal, in accordance with a signal processing parameter, including a logical signal indicating whether echo cancellation is enabled on each channel, the first multi-channel echo canceller including a tone disabler circuit for detecting the presence of an echo canceller disabling tone within each channel and for producing said logical signal in response thereto; a first controller connected with the first multi-channel echo canceller for monitoring the value of the signal processing parameter; a system controller connected for receiving the telecommunication signal, the system controller connected with the first multi-channel echo canceller for transmitting the telecommunication signal to the first multi-channel echo canceller and for receiving the value of the signal processing parameter from the first controller, the system controller further connected for receiving the fist processed telecommunication signal from the first multi-channel echo canceller and for transmitting the first processed telecommunication signal as a transmitted signal including a second multi-channel echo canceller; a second signal processor, including a second multi-channel echo canceller, for performing the signal processing function upon the telecommunication signal, and for producing a second processed telecommunication signal; a second controller connected with the second signal processor for providing the signal processing parameter to the second signal processor; the system controller further configured for transmitting the value of the signal processing parameter to the second controller, and for replacing the transmitted signal with the second processed telecommunication signal subsequent to transmitting the value of the signal processing parameter to the second controller.