This is usually the result of packet loss when transmitting voice over a packet-switched data network.

这是由于在分组交换数据网络中传输语音时发生了数据包丢失。

youdao

Internet - the term 'Internet' means the international computer network of interoperable packet switched data networks.

互联网——“互联网”的术语，指可以协作分组交换数据的国际计算机网络。

youdao

This is not possible in a switched environment because there is no central place on the network to tap in and collect a sampling of all the data.

这在交换环境中是不可能的，因为在网络上没有中心位置，不能进入网络和收集全部数据的。

youdao

It is a packet-switched technology, and only consumes network resources when data is being transmitted, so it is widely expected that customers will be charged for the amount of data they exchange, rather than the time they spend logged on to the network.

CNN: AOL brings instant messenger to mobile phones

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.

ECONOMIST: Taking the battle online | The