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该文简要介绍 SONET/SDH 的基本原理以及利用 SDH 实现海关广域网传输的具体方案,并给出了相关的网络配置,为 SDH 光学传输系统的应用提供了一种参考。
This paper briefly introduces the basic principle of SONET / SDH and the specific scheme of using SDH to realize the WAN transmission of customs. The related network configuration is given, which provides a reference for the application of SDH optical transmission system.