Amplifier circuit for increasing transmit and receive levels

Details Amplifier circuit for increasing transmit and receive levels Amplifier circuit for increasing transmit and receive levels

H - Electricity

04

M

379/71, 379/80,

H04M 1/58 (2006.01) H04B 3/38 (2006.01) H04M 1/60 (2006.01) H04M 9/10 (2006.01)

Patent

CA 1039873

Abstract of the Disclosure A telephone amplifier circuit comprising a trans- mit amplifier and a receive amplifier provides gain in both the transmit and the receive directions. Loss is voice- switched into the receive amplifier in response to the sum of the transmit and receive speech levels to provide sidetone and gain control.

254087

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