| 摘要 |
PURPOSE:To apply the system to both coin pre-deposition and post-deposition systems, by opening a DC loop to a main trunk for monitor, after the information is transmitted to a dialed address, when no charging signal is incoming for a prescribed time after automatic dialing. CONSTITUTION:If off-hook or removal of cash box is performed, a contact (gs) of a relay controlling circuit 50 is closed in response to the operation of a hook switch SW40 or a cash box SW100, a DC loop to the main trunk is closed. A CPU20 performs self-diagnosis and executes the automatic dialing, then the CPU22 waits for the response of a called party and discriminates whether or not the charging signal is received. When the exchange is the pre-deposition system, the charging signal is incoming immediately through the response of the called party. When the exchange is the post-deposition system, since the imposition signal is incoming in response to the opened DC loop after the response of the called party, after waiting for a prescribed time, a forced cutoff circuit 14 is controlled and the loop opening for a prescribed time is done and the reception of the charging signal is waited. When no charging signal is incoming, the automatic dialing, the transmission of information and the opening of the DC loop are repeated for five times. |
