Voice communication link interface apparatus.

摘要

An apparatus 10 controls the two-way communication between the microphone 12 and speaker 36 of a telephone headset and a telephone base. A transmit channel 15 includes an expander 18 that controllably attenuates the transmitted communication signal when the user is not speaking into the microphone 12. A receive channel 30 includes a compressor 34 that controllably attenuates the received communication signal to prevent over driving the speaker 36.