The construction of optical subscriber loops and their operation systems are important for the information society of the future. The optical cable network will be changed and up-graded as the provided service evolves. This paper stresses that it is important to construct an integrated flexible operation system to cope with these network changes. We propose the integrated system using distributed platforms, a common database, and flexible application programs. The distributed platform is composed of unit platforms. We use an object-oriented database for the common database. An atomic task concept is proposed for flexible application programs. The prototype integrated operation system has been constructed using the object-oriented software technologies and the results are shown.
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