Communication apparatus using telephone line

Abstract

An object of the invention is to provide a communication apparatus which commonly uses a function circuit required both for a voice communication and an image communication so that the number of parts of the apparatus is reduced and the apparatus is realized at a low cost; therefore the communication apparatus 1 using a telephone line according to the invention includes a speech circuit 6 for use in a telephone set, wherein the speech circuit 6 is connected to the telephone line for selectively transmitting and receiving a voice signal and an image signal via the telephone line and responds to an output of an operation panel 7 for instructing a start of transmitting the voice signal and the image signal so that the telephone line L is closed by controlling a circuit control circuit 3 for closing and opening the telephone line thereby separating a modem 11 connected to the circuit control circuit 3 for transmitting and receiving an image signal via the telephone line L upon an instruction being given to start transmitting the voice signal while the telephone line L is closed by controlling the circuit control circuit 3 thereby separating a handset 4 connected to the circuit control circuit 3 for transmitting and receiving the voice signal via the telephone line upon an instruction being given to start transmitting an image signal.