| 摘要 |
Disclosed is a device disposed between first and second optical relaying units relaying light communication providing an optical relaying unit including a first deframer deframing a first signal received from the first optical relaying unit; a first framer framing a delivery target signal, which needs to be transmitted to the second optical relaying unit from the first signal; a second deframer deframing a second signal received from the second optical relaying unit; a second framer framing a delivery target signal, which needs to be transmitted to the first optical relaying unit from the second signal; a forward DSP unit digital signal processing a terminal signal transmitted from a user terminal; and a control unit switching a first switching status switching the first signal and the second signal to a forward signal and a reverse signal, respectively, to a second switching status switching the first signal and the second signal to the reverse signal and the forward signal, respectively, corresponding to a switching control signal of an upper optical relaying device. |
