Based on the actual requirement of operators, it analyzes 100G WDM/OTN technology and equipment condition from the as-pects of long distance transmission technology, multi-service supporting capability, electrical cross-connection based on ODUk, reliability and online performance monitoring. Finaly it discusses the engineering designing.% 针对运营商的实际需求，从长距离传输技术、多业务支持能力、基于ODUk的电交叉能力、可靠性、在线性能监测等方面分析了100G WDM/OTN技术和设备现状，最后对工程设计进行了探讨。
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