terminal switching

Recently the communication network faces some new threats. Attacks to the telephone network mainly aim at user terminal device, switching device, database, network management system, signaling system and transmitting device.

近来通信领域出现了一些新的安全威胁对电话网的攻击主要有针对用户终端设备、交换设备、数据库、网管系统、信令系统和传输设备的攻击；

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We develop a small capacity terminal SPC exchange which can be applied to the auto-matic switching networks in rural areas.

为适应农村自动网发展的需要，我们开发了一种小容量端局程控交换机。

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The monitoring software of unified dispatching, complete the remote control command receiving, high power amplifier switching machines, ranging transponder, zero value test and control terminal station zero value test, and calculate the control station equipment and the actual distance of zero.

在监控软件的统一调度指挥下，完成遥控指令的接收、高功放的开关机、测距转发、校零终端的零值测试和测控站的零值测试，并计算出测控站设备的实际距离零值。

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The Design of Switching Stabilizer for Δ M-32 Channels Digital Telephone Terminal Device

△M-32路数字电话终端机开关电源设计

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Using single terminal inverse excitation type converter priciple, eight independent output switching power supply is developed.

采用单端反激电流型变换器的原理，研制成多达8路独立输出的开关电源。

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The Synthsis of ( P, K)-Terminal Switching Network

（P、K）端开关网络的综合

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