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交换技术可以分为4种基本技术：电路交换、分组交换、侦交换和信元交换。电路交换来用时分复用方式，其优点是时延小，而缺点是速度低。分组交换来用存储转发，其优点是速度高，带宽可调整，而其缺点是时延很大。帧交换采用读取发送方式，其优点是速度高，成本任．校点是无闻述
Exchange technology can be divided into four basic technologies: circuit switching, packet switching, detecting exchange and cell switching. Circuit-switching to time-division multiplexing, the advantage of small delay, but the disadvantage is the low speed. Packet switching to store and forward, its advantages are high speed, bandwidth can be adjusted, and its disadvantage is a large delay. Frame exchange using read and send, the advantage of high speed, the cost of any. School is no smell of information