| 摘要 |
A power supply system for an optical network unit in a Fiber In The Loop controls an electric current supplied to optical network units, while maintaining currently established communication channels, by prohibiting establishment of further communication channels. Each of the network units are connected to a plurality of subscriber terminals. A remote terminal is provided with a power supply unit. An electric current is supplied to the optical network units from the power supply unit. A current detecting unit, provided to the power supply unit, detects a current supplied to the optical network units, and outputs a current detection signal when the current supplied to the optical network units exceeds a predetermined level. A line interrupting unit, provided in said remote terminal, interrupts a communication line which is currently not in service when the current detection signal is supplied.
|
