COIN FILLED ALARM TRANSMITTER FOR RURAL RADIO TELEPHONE SYSTEM

摘要

PURPOSE:To send a coin filled alarm to an exchange when coins are filled in a public telephone set with respect to the coin filled alarm transmitter in the rural radio telephone system interconnecting the exchange and a telephone set by a radio channel. CONSTITUTION:In the rural radio telephone system interconnecting the exchange and a telephone set by a radio channel, a public telephone set is provided with a coin filled state detection means 51 detecting filled coins deposited as a telephone charge and an alarm signal transmission means 52 sending an alarm signal to the exchange via a radio channel when the coin filled state detection means detects filled coins, and the exchange is provided with an alarm generating means 53 generating a coin filled alarm to an exchange circuit when the alarm signal is received from the telephone set via the radio channel.