Conclusion 3 : The Packet Delay and Delay Variance are increased when the network congestion occurs.

结论 3: 当网络中拥塞发生,VoIP数据包延迟及延迟变化将增加.

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Guaranteed QoS includes three basic parameters: packet transfer delay, packet delay variation and packet loss rate.

有保证的服务品质包含三种参数: 封包传输延迟 、 封包延迟变异,以及封包遗失率.

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