数字交换电路
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数字交换线路 digital switched circuit 数字交换中心 digital switching center ..
circuit switched digital network 线路切换式数字网
Circuit Switched Digital Circuitry 线路交换数字网络
csdn circuit switched digital network 电路交换数字网络
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Cell phones already have a very low latency digital data path - the circuit switched channel used for voice.
手机上已经存在一个低延迟的数字数据路径—用于语音的线路信道。
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However, VOIP differs from the usual phone services in that it sends calls as digital packets of information over data networks rather than relying on a dedicated circuit-switched network.
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