| 摘要 |
There are provided an optical transceiver, an optical network unit, and an optical transceiver control method that control the operating state of the optical transceiver and reduce the number of terminals of the optical transceiver. An optical transceiver includes: a transmitting and receiving unit that transmits and receives optical signals and that has three or more states for transmission or reception of the optical signals, the states transitioning in sequence; a terminal for receiving a voltage or current as operation instruction information indicating in which one of the states operation is to be performed; and a determining unit for determining one of the states indicated by the operation instruction information, based on a magnitude of the voltage or current received by the terminal. The transmitting and receiving unit operates in the one of the states determined by the determining unit.
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