Associated with the expansion of network, the optimization scheme of transmission net - work is proposed to solve the dispatching of service across the different SDH ring.
介绍了城域传输网络的现状，并对sdh环叠加和环相套的扩容方案存在的问题进行了讨论。
Associated with the expansion of network, the optimization scheme of transmission net - work is proposed to solve the dispatching of service across the different SDH ring.
介绍了城域传输网络的现状，并对sdh环叠加和环相套的扩容方案存在的问题进行了讨论。
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