| 摘要 |
PURPOSE:To improve the economy and reliability and also to connect automatically a terminal evice to an opposite terminal device at designated time without adding function of an exchange main body by storing designation time information and a selection signal at each line with simple operation of a multi-function telephone set so as to attain designated time connection. CONSTITUTION:A clock circuit 13 starts a central controller 10 at each fixed time and transmits present time information to a controller 6 of a multi-function telephone set line circuit 3 via a control line 11. A multifunction telephone set 1 transmits designated time information and selection signal information to call anextension telephone set 19 of destination via a digital transmission line 2 and a line control line 4 with button operation and dial operation. The controller 6 controls a circuit storage device 7 so as to store the designated time information and the selection signal information to a part of the multi-function telephone set 1 corresponding to the allocated position. When the present time information and the designated time information are coincident, a lamp and a buzzer of the multi-function telephone set 1 are used to make a call. |
