Being based on the theory of band-pass crossover network, this paper brings for-ward the design and analysis of two usually confusable crossover network which are in common use.
根据带通式分频网络的原理，提出了常用的两种容易混淆的分频网络的设计与分析方法。
Finally, analyzed the net to pass the wide band metropolitan area network, proposed the IPTV load bearing network transformation and the construction plan.
最后，分析了网通宽带城域网，提出了IPTV承载网的改造和建设方案。
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