![]() ![]() ![]() ![]() All PDH equipment manufacturers use their No universal standards for optical interfaces. Makes it difficult for international interconnection. Each of them hasĭifferent electrical interface rate levels, frame structures and multiplexing methods. Japanese Series, instead of universal standards for electrical interface. There are only some regional standards: European Series, North American Series and Z PDH (Plesiochronous Digital Hierarchy) electrical interfaces No standards, manufacturersdevelop at their will. Including frame structure, multiplexing method, digital rates hierarchy, and interface code Z SDH is a transmission system (protocol) which defines the characteristic of digital signals, Z SDH is the abbreviation ofSynchronous Digital Hierarchy. New standard that allows interconnecting equipment of Need for a system to process increasing amounts of It defines a standard frame structure, a specific Know the features, applications and advantages of SDH based equipment Understand the basic of SDH multiplexing standard Upon completion of this course, you will be able to: SDH Overview.įrame Structure & Multiplexing Methods. No Spreading Without PermissionĬopyright 2006 Huawei Technologies Co., Ltd. ![]()
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