这种变化使得城域传输网的建设势在必行。
This change accelerates the metropolitan transport network construction.
针对城域传输网的特点，提出了稀疏波分复用方案。
Aiming at the character of optical transport network of MAN, a solution of CWDM is put forward.
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。
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。
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.
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