title: Electrical facility construction work for information network structuring by the use of sewage conduits
abstract: To confront the advent of the advanced information society, there has been a pressing demand for the adjustment of the communications infrastructure and the structuring of the information network by utilizing the sewage conduits. The City of Tokyo is promoting a project by the name of the sewer optical fiber teleway (SOFT) network plan. According to this plan, the total distance of the optical fiber network laid in the sewer conduits is scheduled to reach about 470 km by the end of March 2000. At the final stage, this distance will reach 800 km as a whole. We completed the construction work for the information control facilities scattered in 11 places inclusive of the Treatment Site S, with the intention to adjust and extend the information transmission network laid through the above-mentioned optical fiber network, to be used exclusively by the Bureau of Sewerage. This construction work is described in the paper
keyphrases: electrical facility construction work information network structuring sewage conduits communications infrastructure Tokyo information control facilities Treatment Site S information transmission network Bureau of Sewerage sewer optical fiber teleway network plan asynchronous transmission mode switches ATM switches