因此，网络电话系统功能全面，包括自动总机，语音邮件，呼叫排队等。

Therefore most VOIP phone systems come with a rich feature set, including auto attendant, voice mail, call queueing and more.

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输入为同峰值速率突发信源的突发级损失系统是AT M网络资源分配和呼叫允许控制研究中的一种重要排队模型。

Burst-level loss system input by bursty bursty with the same peak rate is an important queueing model in the study of resources allocation and call admission control in ATM networks.

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该模型将呼叫的排队过程与语音包的排队过程合并起来，建立了完整的系统状态图。

Combine the queuing process of calling and the queuing process of voice packet the model set up an integrated system status diagram.

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