DIAL SIGNAL TRANSMITTING METHOD,申请号JP19840272949-传众专利搜索

DIAL SIGNAL TRANSMITTING METHOD

申请公布号：JPS61152193(A)

申请号：JP19840272949

申请日期：1984.12.26

申请公布日期：1986.07.10

申请人：

HITACHI LTD

发明人：YONEZU YASUNORI

分类号：H04Q1/30

主分类号：H04Q1/30

摘要：PURPOSE:To decrease the erroneous connection due to the transmission error of a dial signal by using a code signal, sending a signal of a push-down dial to an exchange and displaying the push-down dial at a display device. CONSTITUTION:The push-down of a dial 3 is detected at a CPU1, numerals on the dial are displayed on a display device 2, the contents are stored at a RAM6, and a code signal (digit signal) is sent through an interface 4 to an exchange. At the exchange side, the coincidence of two received dial signals is investigated while the digit signal is confirmed, and normal receiving (abnormal receiving) is informed to a subscriber's private device side. The subscriber's private device, which receives a receiving abnormality, sends a dial signal and a digit signal in a RAM6 to the exchnage.