| 摘要 |
PURPOSE:To awaken the consciousness of saving and to directly know the fee, by displaying the telephone charge and call time directly to the telephone set. CONSTITUTION:The telephone set is provided with the charge display for one call 1, time display for one call 2, integrated charge display 3 and erase button 4. When a telephone number is dialed, the charge for the unit time is displayed on the display 1 according to the station number, the call time is on the display 2, and total charge is on the display 3. The handset is located after the end of call and each display is erased by pushing the button 4 if required. Thus, useless call is avoided and the confirmation of charge in case of rented telephone set is made. |
