What are the commonly used data exchange technologies? Where are they used?

Data exchange is only some technologies in communication, and the appropriate exchange technology can be selected according to the needs of users and the characteristics of communication. The following examples may contain many practical technical means, and the application place should be decided according to the specific needs.

1 Circuit switching (developing fast circuit switching and most rate circuit switching) is used in places that require small delay and low data accuracy, such as telephone (voice service in telecommunications), telephone communication network PSTN and digital data network DDN.

Message switching (whose development includes packet switching and frame relay) is real-time and adapts to sudden data transmission, but the delay is uncontrollable and generally large. And the transmission accuracy is high. It is suitable for data transmission. This mode can be used for SMS, phone and fax. Internet uses packet switching technology. Integrated services digital network N-ISDN, GSM, GPRS, CDMA, 3G, etc. Use packet switching and circuit switching.

3 ATM switching has the characteristics of the above two modes and is widely used in telecommunications and networks. At present, the integrated service data network B-ISDN is a network with information technology as the exchange technology.

4 IP switching new generation switching technology

5 Optical Switching New Generation Switching Technology