PURPOSE: To select optionally a called party for calling among predetermined called parties by providing a pushbutton signal detection means in the inside of the simultaneous contact device and sending a call to a terminal whose reception is decided in advance depending on a kind of a pushbutton signal sent by a person making a simultaneous contact.

CONSTITUTION: Subscriber interface circuits 21-28 are interface circuits opposite to subscriber circuits of an electronic exchange, the subscriber interface circuit 21 is used for a circuit exclusively receiving a call from a simultaneous contact person and the subscriber interface circuits 22-28 are used for circuits exclusively for calling called parties. A pushbutton signal detection circuit (audible signal detection circuit) 4 identifies a kind of a pushbutton signal (audible tone) sent from the simultaneous contact person and converts the result into a binary number data able to be read by a microprocessor 6. The pushbutton signal detection circuit 4 is formed easily by employing an exclusive LSI or a signal processing microcomputer. Thus, the simultaneous contact person selects called parties as required.