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就从准同步数字系列（ＰＯＨ）向同步数字系列（ＳＤＨ）和异步转移模式（ＡＴＭ）网络过渡时所涉及的ＳＤＨ网络选择、ＰＤＨ／ＳＤＨ传输部件、ＳＤＨ无线系统以及网络管理等问题进行了探讨。
The SDH network selection, PDH / SDH transmission components, SDH wireless systems and network management involved in the transition from POH to SDH and ATM networks were explored .