全球通信业务呈现出爆炸式增长的趋势，因而对传输网络带宽的要求也就越来越高。
Global communications business has shown explosive growth trends, and the requirements of network bandwidth are increasing.
利用传输网络的各自优势，实现跨网业务的新技术不断涌现。
Many new technologies appear, which integrate the advantages of each transport networks, and provide service between them.
传输网络作为承载各类业务的基础网络，各电信运营商都在积极的进行建设。
Transmission networks as the basis for carrying all types of business networks, the carriers are actively building of the conduct.
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