| 摘要 |
PURPOSE:To enable to reject redundant communication to save the telephone charge and to enable to grasp the usage condition of telephone correctly, by displaying the telephone charge in real time automatically. CONSTITUTION:The input unit 12 detects the dial signal from the detector 10 mounted on the telephone set and other signal tones and delivers the dial information and busy information to CPU14. The CPU14 stores the dial information once in the memory RAM1, operates the communication charge during communication with the unit time signal and dial information based on the charging type information from memory ROM18 and displays the charge in real time on the display section 28 via the display drive section 30. After the end of communication, the communication charge, telephone number of opposing party, and communication time from the clock 20 are recorded on the printer 32. Further, the communication charge every month is summed and printed, and also the abbreviated dialing can be made with the memory RAM2. |
