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针对目前软交换的大规模建设及应用,AG不断的引入和建设,如何实现AG上连的业务承载是承载网领域迫切需要研究的课题。文章分析了NGN的体系结构和承载方案,深入阐述了城域网VPN、城域网SR延伸和MSTP传输网三种AG上连承载方案,提出了选择具体技术方案的建议。
In view of the current large-scale construction and application of softswitch, AG continues to be introduced and constructed. How to realize the service bearer on an AG is an urgent issue to be studied in the bearer network. This paper analyzes the architecture and bearer scheme of NGN, and further elaborates on the scheme of bearer for the three AGs in metropolitan area network (VPN), SR extension of MAN and MSTP transmission network, and puts forward the suggestion of selecting specific technical solutions.