The specification assumes HTTP is the underlying network protocol.

该规范假定HTTP是底层网络协议。

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An IP application works the same no matter what the underlying network technology.

不管底层用什么样的网络技术，IP应用程序的工作不变。

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This allows changes in the underlying network without having to make any changes to the application.

这允许底层网络的修改，而不需要对应用程序做任何修改。

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"Following a combination of an underlying increase in network traffic as well as a high rate of new customer additions, we are aware of capacity issues in a small number of exchanges, " she said.

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One of the underlying causes of the network's bad performance is the time taken to recover from routine failures, such as in signalling or track.

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CIOs are looking at network virtualization, not just VPNs, but also the opportunity to decouple network services from the underlying physical hardware.

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