Video telephone device having automatic sound level setting along with operation mode switching

摘要

A cellular video telephone terminal is capable of switching its operation mode between a voice communication and a voice and image communication in response to a manual operation on a key. A control unit checks whether the key is operated to effect the voice and image communication. The control unit sets volumes of a speaker and a microphone to low levels in the voice communication mode. The control unit sets the volumes of the same to high levels in the voice and image communication mode to enable hand-free operation.