Telephone terminal, telephone system using telephone...

Details Telephone terminal, telephone system using telephone... Telephone terminal, telephone system using telephone...

H - Electricity

04

M

H04M 1/00 (2006.01) H04L 12/66 (2006.01) H04M 9/08 (2006.01) H04M 11/06 (2006.01) H04Q 3/64 (2006.01)

Patent

CA 2519827

A telephone terminal includes a receiving detector which detects a signal level of a receiving voice signal incoming from the main device, a transmitting detector which detects a signal level of a transmitting voice signal to transmit it to the main device, an adjustment device to adjust the transmitting voice signal and a controller which obtains a control value capable of switching a communication state from a receiving state to a transmitting state to make an acoustic echo to be added to the transmitting voice signal be minimum, based on each signal level of the receiving voice signal and signal level of the transmitting voice signal, and controls the adjustment device based on the control value.

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