REMOTE POWER RESTART DEVICE FOR OPTICAL LINE DEVICE

摘要

PROBLEM TO BE SOLVED: To restart only a defective ONU from a remote place.SOLUTION: A first light-to-power converter unit 20 converts control light from the OLT 2 side into electric power. A power line control unit 23 operates an internal timer by a current that flows according to the power, and resets the timer by communication light from an ONU 3. If the current continues flowing in up to the threshold time of the timer, a power line switch 22 inserted into the power line of the ONU 3 is switched on and then switched off.