The concept of network control was extended to let digital switches communicate with databases (known as Service Control Points) and signal processing systems (Intelligent Peripherals).
网络控制的概念被扩展到了让数字交换机与数据库（称为服务控制点）和信号处理系统（智能外设）通信。
2
The DSP (DigitalSignal Processing) allows fine tuning of all aspects of sound with complete control of the audio stream at high resolution.
（数字信号处理器）允许的声音与以高分辨率音频流的完全控制所有方面的微调。
3
Stepping motor can be controlled by pulse signal and applies to digitalcontrol system.