| 摘要 |
PURPOSE:To confirm whether or not the number is sure, by displaying the called number according to the operation, when an opposing party is called out through the operation of the calling number operating device of an automatic telephone set. CONSTITUTION:A handset of a telephone set 1 is off-hooked, the dial is operated to feed a signal of calling number. Simultaneously, the calling number is displayed on a display device 2. Further, when the handset is returned to a given location after the call, the display device 2 is returned to zero. |
