To minimize delay and jitter, the network devices must be able to service voice packets as soon as they arrive, or in other words, in strict priority fashion.

为了使延迟和抖动减到最小，网络设备必须能够在语音数据包一到达时就进行处理，换句话说，就是严格的优先级方式。

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However, as a kind of broadband service, streaming media service has strict requirement for network bandwidth, jitter, delay, and loss tolerance.

然而，流媒体业务是一种宽带业务，对于网络带宽、抖动、延迟和丢包率都有较高的要求。

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At early time, it infrastructure construction concentrated on it metrics exclusively, such as it service availability, delay, jitter and so on.

早期的IT基础设施建设过程完全以技术标准核心，比如只考虑IT服务的可用性、时延、抖动等方面。

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