论文部分内容阅读
随着业务需求驱动网络向全IP化发展,分组化传输技术成为下一代传输网的主流,IP承载技术是大势所趋。在城域网这个业务需求复杂、新技术不断涌现的区域,任何先进技术的引入都不是一蹴而就的,尤其是面对庞大而成熟的SDH/MSTP网络、不断延伸覆盖的IP城域网以及正在兴起的全业务接入网,PTN在网络中的定位以及和其他网络的关系均需要重新思考。
With the business demand driving the network to all-IP development, the packet transmission technology has become the mainstream of the next generation transmission network. The IP bearer technology is the trend of the times. In the metropolitan area network where the business needs are complex and new technologies are emerging, the introduction of any advanced technology is not accomplished in a single step. Especially in the face of the large and mature SDH / MSTP networks, the IP MANs are constantly being extended and emerging Of the full service access network, PTN positioning in the network and the relationship with other networks need to rethink.