被称为电路交换机的交换设备没有存储或控制用户送往终点路由的数据的能力。
The switches, called circuit switches, have no capability of storing or manipulating user's data on their way to the destination.
本文对程控数字电话交换机所用的集成电路器件，交换机的系统结构以及性能要求的发展趋势进行了讨论。
The development trends of integrated circuits used in SPC telephone switching systems, system architecture, features and requirements of the switching systems are discussed.
论文的最后还介绍了交换机的高速电路设计技术。
In the end of the paper, Switcher High-Speed Circuit Design Techniques was introduced.
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