The video packet encoded by block-based prediction encoding standard is very resistless to transmission over the packet-switched network and Internet.

使用基于块的预测编码产生的视频流对 包 交换 网络及无线 网络中的传输错误异常敏感。

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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。

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This integrated services network is built by using many kinds of service performance assurance mechanisms upon a general packet switched network.

这种网络是通过在统一的分组交换网络上实现各种不同的服务性能保证机制来构造的。

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For one thing, the genius of the packet-switched network means new VoIP services can reach every user worldwide without any specific infrastructure investment.

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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.

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Why did the phone companies cling to expensive switched network standards even as packet-switched voice grew robust enough to deliver acceptable fidelity at a much lower cost per connection?

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