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Electrical power system supervisory manner of the optical subscriber network device and the electrical power system supervisory mode null optical subscriber's line
Electrical power system supervisory manner of the optical subscriber network device and the electrical power system supervisory mode null optical subscriber's line
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机译：光用户网络设备的电力系统监控方式和电力系统监控模式空用户线路
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摘要
PURPOSE:To improve maintenance operability by enabling a remote monitoring as to whether a power source system is abnormal or a device is fault or not, in a network side device. CONSTITUTION:A voltage monitoring part 34 monitors the voltage of a commercial power source via a signal line (a) and the voltage of a backup battery 32 via the signal line. When the commercial power source voltage lowers below a normal value, a commercial power source alarm signal is transmitted to a line termination part 12. When the backup battery voltage lowers below the normal value due to the discharge of the battery 32, a backup battery alarm signal is multiplexed to an incoming frame to the line termination part 12 and the signal is transmitted to an optical fiber transmission line 50 via an electrooptical converting part 13. When a voltage monitoring part 34 detects a power source abnormality at a non-communication time, an alarm signal is transmitted and a start request signal is transmitted to a signal line d. A start control part 22 starts a network termination part 10. The line termination part 12 transmits the alarm signal to the optical fiber transmission line 50.
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