| 摘要 |
PROBLEM TO BE SOLVED: To provide a distribution system communication route controller capable of reducing device product classes and also facilitating the configuration change of a network.SOLUTION: The presence/absence and wavelength of a reception signal in a variable port 41c are confirmed. When the reception signal exists, light emission is performed with a signal having a wavelength which is not received by the portable port 41c. Then, it is determined whether or not a signal having the wavelength being the same as that of a transmission signal is received by the variable port 41c. When a signal not having the same wavelength as the transmission signal is received by the variable port 41c, the transmission wavelength of light to be output from the variable port 41c is determined as a signal wavelength used for light emission, and the determination result of the signal wavelength is set as the transmission wavelength signal information of the variable port 41c. |
