Recent developments in construction and maintenance technologies for optical fiber cable networks of NTT are presented.Requirements for subscriber loop construction and maintenance,cable distribution system,cable distribution area,cable installation planning,and cable network reliability setting are described.Cable joint cabinet and closure are also described as network construction element techniques.Measurement techniques,loss,frequency response and high spatial resolution OTDR are also discussed and a plant administration and operation system for optical fiber cable network maintenance are shown.Session title…… Advanced Operation and Maintenance Technology of Optical Fiber Transmission Systems
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