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本文主要介绍德国、法国、日本生产的ＳＤＨ复用设备的组成、功能、主要指标及特点等。法国Ａｌｃａｔｅｌ的ＳＤＨ产品均已系列化、商品化；富士通的ＳＤＨ产品模块化．灵活性大。文中以ＡＩｃａｔｅｌ的复用设备为例，说明该类设备在区域网中的实际应用。文末指出：针对ＳＤＨ网络管理灵活性大，配置变更反应能力强，操作可靠性高等特点来研制设备．设计设备间的配量方式等是应关注的课题。
This article mainly introduces the composition, functions, main indexes and features of SDH multiplexing equipment produced in Germany, France and Japan. SDH products from Alcatel of France are both serialized and commercialized; Fujitsu’s SDH products are modular. Great flexibility. The article takes the reuse equipment of AIcatel as an example to illustrate the practical application of this kind of equipment in the area network. At the end of the article, it is pointed out that the equipment is developed for the features of SDH network management flexibility, configuration change response capability, and operation reliability. Designing the dosing between devices and so on should be the subject of attention.