It introduces the functions and characteristics of railways telex automatic switch network, the volume control of telex network, operation guarantee of network and effects of network operation.
介绍了铁路电报自动交换网的功能特点，电报网的流量控制，网络运行保障及效果。
The volume control circuit is composed of a programming switch and a computer storing magnifying executive circuit, and can realize the automatic alarming volume control.
音量控制电路由编程开关、电脑存储放大执行电路构成，可实现报警音量自动控制；
The volume control circuit is composed of a programming switch and a computer storing magnifying executive circuit, and can realize the automatic alarming volume control.
音量控制电路由编程开关、电脑存储放大执行电路构成，可实现报警音量自动控制；
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