For each incoming sub frame, the respective signals provided with an intrinsic signal form such as incoming STM signals 23-B, incoming ATM signals 24-B and incoming Ether packet signals 25-B are independently allocated with bands, stored and transmitted. 前記上りサブフレームごとに上りSTM信号23−B、上りATM信号24−B及び上りイーサパケット信号25−B等、固有の信号形式を持つ各信号が独立に帯域を割り当てられ収容されて伝送される。 - 特許庁