IP communications involves the transmission of information in packets on an as-needed basis.The route a packet of information follows can and does change throughout the transaction, unlike the fixed path of a circuit.
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- IP通信發(fā)展到按需求以包的形式進(jìn)行信息傳輸，與電路（交換）中固定通道不一樣，在一次交易中信息包經(jīng)過(guò)的路由是可以并一定是改變的。
