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接入网已成为铁路各种电信业务和各种信息系统接入的重要手段和网络支持，对加快铁路信息传送的宽带化、综合化具有重要意义。为配合铁路通信光纤接入网建设，特组织本专题讲座。该讲座在总结一年来接入网在铁路应用研讨与实践的基础上，介绍了接入网技术的基本知识、对引入接入网技术的基本认识、在铁路通信中的应用特点，以及今后有待研讨的一些问题。
The access network has become an important means and network support for various telecommunication services and various information systems access to the railway and is of great significance to speeding up the broadbandization and integration of railway information transmission. To tie in with the construction of optical fiber access network for railway communications, the organization organized this seminar. On the basis of summarizing the research and practice of access network in the past year, this lecture introduced the basic knowledge of access network technology, the basic understanding of the technology of introducing access network, the characteristics of application in railway communication, and the future Discuss some of the issues.