【摘要】 针对光城域网对综合业务的电信级需求,以城域网三网业务融合传送为主要领域,以基于弹性分组环RPR实现多业务传送为主要手段,研究了多业务传送与交换的简化方法,介绍了自主国际标准ITU-T X.87/Y.1324的协议要点、组网拓扑结构、传输架构、系统节点的组成和MSR通用帧格式。通过与RPR的比较,得出如下结论:MSR解决了语音、数据和视频等多业务(支路)分别在RPR各节点上/下的传送、支路组播、支路保护和性能监测问题。MSR成本较低,而且在同一网络平台上提供语音、数据和视频等支路业务需要这样的功能,它是目前基于分组的城域网多业务传送和出租的有效方法。更多还原

【Abstract】 The convergent transport of voice/data/video networks was the major scope of this paper. The multi-services transport and switch, protocol elements, topologies, transmission framework, structure of system architecture and generic frame format of MSR were studied by means of resilient packet ring (RPR) and its multi-services transport according to carrier-class demands for multiple services of optical metropolitan area networks. By comparison with RPR.MSR is an effective transport solution of adding and dropping multiple voice/data/video services, tributary multicast, protection and performance monitoring. MSR has lower cost and is an effective way of packet based multi-services transport and renting, it is needed by carrier if they has voice/data/video tributary services for rent at the same network platform.更多还原