| 摘要 |
PURPOSE:To enable economical call rate metering, by temporarily stopping the batch call metering if incoming call is present during batch metering after the call by use with high price coins and restarting the batch metering again after the end of incoming call communication. CONSTITUTION:When incoming call is present during batch metering, the relay S is operated and direct connection control is made independently of the outgoing control circuit with the public telephone function, and the operation circuitof HC1 relay is held with the hc1<0> contact disconnected from the s<3> contact. Further, the HC1 relay is restored with the closing of s<9> contact. When HC1 relay is again operated during incoming call connection, the relay S is operated and rva<4> relay is not operated. Accordingly, the circuit operating the HC1 relay again is not possible. T relay is inoperative and batch metering is stopped. Further, the count circuit holds the state and batch metering operation is again made with the restoration of the relay S after the end of incoming call. |
