| Summary: | 碩士 === 國立交通大學 === 管理科學研究所 === 69 ===
In recent years, the cost of subscriber pair gain systems, i, e, systems which enable more than one subscriber to be sorved by a single cable pair, has decreased significantly in comparison with cable. Moreover, the operating expenses associated with an all-cable loop network have increased along with the cost of labor, particularly in areas of high customer mobility and uncertain growth. For these reasons, the application of pair gain systems has become and important consideration in loop plant design, This paper presents and discusses a series of mathematical models which can be used in the economic analysis of subscriber pair gain system applications. Given the forc ast requirement for loop facilities, one may use these models to evaluate and compare alternatives for meeting this requirement on a preseent worth' basis. The alternatives may include cable only, pair gain systems only, or a combined cable/pair gain alternative.
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