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传送网是承载各种通信业务的基础网络。建设一个高效、完全满足业务需求的3G传送网是整个3G网络建设的重要基础。介绍黑龙江移动二级干线网和城域网进行3G改造时应注意的一些问题。
Transport network is carrying a variety of communications services based network. The construction of an efficient and fully meet the business needs of the 3G transport network is an important foundation for the construction of the entire 3G network. Describe some of the problems that should be noticed when making 3G transformation in Heilongjiang mobile secondary trunk network and metropolitan area network.