| 摘要 |
PURPOSE: An RGU(Ring Generator Unit) for a P32-T terminal is provided to duplicate the RGU. Therefore, a reliability of units can be improved, and an automatic function and a manual function can be selectively operated. CONSTITUTION: A power unit(31) receives a power applied from an exterior, and generates a power necessary for an interior, then supplies the power to each device. A frequency generator(32) generates a ring signal to supply the ring signal to a ring amplifier(33). The ring amplifier(33) amplifies the signal as much as a necessary power. The first filter(34) filters the power supplied from the power unit(31), and supplies the filtered power to the frequency generator(32) and the ring amplifier(33). A fuse shorts circuits under overload and over current. A monitoring control/alarm unit(35) lights alarm lamps under the over current, and controls an inputted current to intercept an output of the current. The second filter(36) filters the power, and outputs the power to the monitoring control/alarm unit(35). A line switch unit(37) manages switch operations of the first unit and the second unit. A control switch control whether an automatic RGU or a manual RGU should be selected. On-lamps display that each unit currently operates. Alarm lamps display alarms generated from each unit. The control switch, a power switch and fuse mounted grooves, the on-lamps and many alarm lamps are mounted on entire surface of the RGU.
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