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简介数字同步系列(SDH)622Mb/S和2.5Gb/S系统在工程应用中的传输系统组成、传输媒体、线路传输系统设计、复用方式和中继段长度的考虑。
Introduction The transmission system components, transmission media, line transmission system design, multiplexing mode and hop length of 622 SD / SD / SDH 622Gb / S and 2.5Gb / S systems in engineering applications are considered.