With the evolution of metropolitan transmission network and the bandwidth requirement, DWDM technology will be entered into metropolitan network area from long haul backbone network.
随着城域传输网的演变和对带宽的需求，密集波分复用技术将由长途骨干网进入城域传输网。
This thesis has designed a kind of big net width data line for the service of data transmission based on wideband Metropolitan Area Network(MAN)'s MPLS VPN technology.
论文中设计和实现了一种城域内企业网大带宽专线互联方案，采用基于宽带城域网的MPLS VPN技术来进行数据传输租线业务实现。
A good metropolitan network should be a general transmission platform, which can carry out kinds of services efficiently and reliably.
一个好的城域传输网络应该是一个通用的传输平台，高效可靠地传输各种业务。
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