对软交换技术进行了简单介绍，同时对在网络中大规模应用的软交换长途网在建网过程中所遇到的一些技术问题进行了分析。
It introduces soft switch techniques briefly, and analyses some techniques problems encountering in the course of building long distance networks which adopt soft switch extensively.
这里还有一个布满灰尘的机场跑道网，我还是觉得庆幸，因为我没有时间长途跋涉两周半到达目的地。
There is also a network of dirt airstrips, which was fortunate for me, as I had no time for the two-and-a-half week trek to my destination.
探讨了如何在长途电话交换网中应用单纯形算法解决动态路由问题，并介绍了算法运行情况和运行结果。
This paper discusses how to solve dynamic routing problem with simplex algorithm in a long-distance telecommunication switch network. The computed results are shown in the paper.
密集波分复用(DWDM)技术在长途通信中已经得到了广泛的应用，但其高昂的系统成本极大地限制了它在城域网中的应用。
DWDM technology has been widely used in long-distance communications, but its high system cost has greatly limited its application into metro area networks (MAN).
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.
所附省内长途电信网与全国邮政网两个实例可供参考，它们也是本文理论的实际验证。
Two practical examples of provincial telecommunication network and postal network are also included for reference. And the theory proposed in this paper has been also checked by them.
接着，详细说明时分多路系统在长途主干线路上的应用，以及最近引伸至市内骨干网和接入网的应用。
Then, it describes in detail the application of WDM systems on long distance lines and possible applications in local networks, including those interoffice lines and some access lines.
文章就我国长途干线传输网的现状进行了分析，提出了优化意见和演进方案，最后对网络规划和标准制订工作提出了建议和设想。
This article analyses the current situation of our national long distance trunk transmission network and brings forward the optimization suggestion and evolve...
文章就我国长途干线传输网的现状进行了分析，提出了优化意见和演进方案，最后对网络规划和标准制订工作提出了建议和设想。
This article analyses the current situation of our national long distance trunk transmission network and brings forward the optimization suggestion and evolve...
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