| 摘要: |
| 本文首先分析了通信业务融合的趋势及对通信网提出的新要求，在比较分析现有通信网的基础上，指出通信网向IP综合网发展的方向，并详细阐述了建设下一代通信网使用的技术，及其在网络平滑升级过程中的地位和作用。 |
| 关键词: 通信网 IP综合网 接入技术 通信业务融合 |
| DOI：10.3969/j.issn.1001-893X. |
| Revised:December 08, 2000 |
| 基金项目: |
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| Present Situation and Evolution of Communication Networks |
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| Abstract: |
| This paper firstly describes the trend of communication services merging and the new requirement in communication networks. Then on the bases of the present communication networks, points out the evolution trends for communication networks to an IP integrated network. The techniques used in next generation communication networks are described in detail. Their roles and contributions in the process of networks smoothly upgrading are also presented. |
| Key words: Communication network,IP Integrated network,Access technique |
