| 摘要 |
PROBLEM TO BE SOLVED: To faster collect initial investment costs by respectively providing communication and a sensor information signal from one terminal and one sensor at least to a processor and transferring that signal from the processor to an optical converter as an upstream data signal. SOLUTION: Upstream information from a terminal 230 is transmitted through a path 220 to a processor 225 and additionally, a sensor 240 transmits information along the path 220 or along a path 241 prepared for sensor information. The information transmitted along the pathes 220 and 241 is processed by the processor 225 and coded data are outputted onto a path 242. The coded data on the path 242 are used for the over modulation of data onto the optical signal of a path 210 through a modulator 44 and afterwards, these data are looped back through an upstream fiber 35U to a remote node. |
