VOICE CALL APPARATUS USING SERIAL COMMUNICATION, PARTICULARLY FOR CONVERTING A USER'S ANALOG VOICE SIGNAL INPUTTED TO A PHONE TRANSMITTER/RECEIVER INTO A DIGITAL VOICE SIGNAL AND TRANSMITTING IT ACCORDING TO A SERIAL COMMUNICATION METHOD AND CONVERTING DIGITAL VOICE SIGNAL RECEIVED FROM OUTSIDE INTO AN ANALOG VOICE SIGNAL AND OUTPUTTING IT THROUGH THE TRANSMITTER/RECEIVER

摘要

PURPOSE: A voice call apparatus using serial communication is provided to allow a user to make voice call communication without a modem, a telephone line or an exchange by being directly connected to an RS-232C cable. CONSTITUTION: A phone transmitter/receiver(11) includes a microphone(11-2) and a speaker(11-1). A signal converter(12) converts a user's analog voice signal inputted from the transmitter/receiver(11) into a digital voice signal, and converts a received digital voice signal into an analog voice signal and transfers it to the transmitter/receiver(11). A serial communicating unit(13) transmits the digital voice signal which has been converted by the signal converter(12) to outside according to a serial communication method, and transfers the digital voice signal received according to the serial communication method from outside to the signal converter(12).