Motorola Solutions, Inc.
COMMUNICATION DEVICE PROVIDING HALF-DUPLEX AND PSEUDO FULL-DUPLEX OPERATION USING PUSH-TO-TALK SWITCH

Abstract:

A portable communication device provides a pseudo full-duplex communication mode by unmuting a microphone, enabling acoustic echo cancellation (AEC) and decreasing speaker volume when a push-to-talk (PTT) button is pressed, and by muting the microphone during release of the PTT button.