TELEPHONE SET WITH PASSWORD FUNCTION

PURPOSE:To solve wrong dialing or the like economically by providing a signal generating circuit sending a ring back tone and an off-hook detection circuit detecting off-hook of a telephone set circuit, inactivating a loop generation password request signal generating circuit and connecting the telephone set circuit to a terminal to the telephone set. CONSTITUTION:When an incoming call comes to the telephone set, an exchange sends a call signal and the call signal is detected by a signal detection circuit 5 and its output controls a loop generation password request signal generating circuit 6 to send a password request signal. Then a caller dials further a predetermined number. When a called party replies a call, an off-hook detection circuit 9 is operated to stop the operation of a signal generating circuit 8, a switch 10 is shifted to the position of an upper contact simultaneously and terminals 1,1' are connected directly to a telephone set circuit 2 to form the speech circuit. Thus, the telephone set without wrong dialing and mischievous dialing is realized comparatively economically.