| 摘要 |
PURPOSE:To eliminate the need for an exclusive control circuit and a device to be controlled, and to simplify the constitution of the titled measuring device, by feeding the information on measurement of circuit quality to a central station from a switchboard. CONSTITUTION:When circuit qualities are measured, the station discriminating dial pulse for connection to a terminal station 4 to be measured and the dial pulse of a special number meaning the measurement of the circuit quality are fed to a switchboard 1 from a circuit quality measuring device 8. These dial pulses are sent to a central station 3 through the switchboard 1 and a communication circuit 2. The station 3 converts the dial pulses into the selective calling code and the circuit quality measuring code. These codes are sent to the station 4. Then the station 4 connects with folding the output of a signal receiver to the input of a signal transmitter. Thus an exclusive control circuit and a device to be controlled are eliminated. This process can simplify the constitution of a quality measuring device for a radio circuit. |
