Both transmission device and switchingdevice are entirely digital, it's easily to control system and search data with multimedia computer which could reduce cost and improve performance.
采用了全数字化的传输和交换设备，利用多媒体计算机进行监控和辅助检索。使得成本降低，效率提高。
2
The switching policy and emergency-coping policy are given. By applying the digital PID algorithm, the device has a quality of quicker response and lower super-adjustment.