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这几年来，通信技术日新月异，许多ＳＤＨ设备厂家为了适应技术的发展都提出了新一代ＳＤＨ的概念，并先后推出了一系列的产品。这里总结几年来对各类ＳＤＨ产品的维护经验，从维护角度谈一谈新一代ＳＤＨ产品应具有的一些特点。 １．适应将来信息网的发展现代电信网已从原来单
In recent years, with the ever-changing communication technology, many SDH equipment manufacturers have put forward the concept of a new generation of SDH in order to adapt to the development of technology and have successively launched a series of products. Here summarizes the years of experience in the maintenance of various types of SDH products, from a maintenance point of view about the new generation of SDH products should have some of the features. 1. Adapt to the future development of information network Modern telecommunications network has been from the original single