这就要求“休眠服务器”软件，代表PC执行各个基本任务，比如下载文件或者保持联机语音通话，或是保持远距离消息传递软件工作。

This lets SleepServer perform basic tasks on behalf of the PC, such as downloading files or staying logged into voice communications or instant-messaging software.

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通常，此类系统包括关键服务器、网络中枢和诸如电子邮件及语音等消息部分，如图1所示。

Often, such systems consist of the critical servers, the network backbone, and messaging pieces such as E-mail and telephony, as shown in Figure 1.

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通常，此类系统包括关键服务器、网络中枢和诸如电子邮件及语音等消息部分，如图1所示。

Often, such systems consist of the critical servers, the network backbone, and messaging pieces such as E-mail and telephony, as shown in Figure 1.

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