| 摘要 |
PURPOSE:To improve the effective utilization for the entire talking radio channel by preventing calling operation to hook-off having no intension of talking so as to prevent retention of useless talking radio channel for an automobile telephone, for example. CONSTITUTION:When a dial signal is incoming through the dial of a user, a microprocessor 5 stores it to a dial signal storage section 7, a dial signal digit number counter section 9 counts the number of digits, the result is compared with a prescribed value stored in a program in advance as a constant, and when the count value reaches the value, a reception section 10 is started a calling signal is transmitted to a line. The succeeding dial signal is stored in the dial signal storage section 7 successively in this case. When the transmission of the dial signal is commanded from a station, the microprocessor 5 transmits the dial signal stored in the dial signal storage section 7 to the line. No calling operation is conducted if no dialing is conducted after hook off and the dialing is interrupted before the dial number reaches a prescribed number of digits. |
