The design methods given here have been successfully implemented in a Chinese-developed SPC digital telephone switching system.
本文所讨论的设计方法已成功地应用于国产程控数字电话交换机。
The development trends of integrated circuits used in SPC telephone switching systems, system architecture, features and requirements of the switching systems are discussed.
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。
Some systems, like the telephone system, use a network of cables, wires, and switching stations for point-to-point communication.
有些系统，如电话系统，使用由电缆、导线和交换台组成的网络，来进行点对点的通信。
Some systems, like the telephone system, use a network of cables, wires, and switching stations for point-to-point communication.
有些系统，如电话系统，使用由电缆、导线和交换台组成的网络，来进行点对点的通信。
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