数据连接已打开，没有进行中的数据传送。

Data connection open; no transfer in progress.

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随着互联网的飞速发展，互联网已逐步由单一的数据传送网演化为能够传输数据、语音、图像等实时多媒体信息的大规模综合传输网。

With the rapid development of past years, the Internet has evolved into a large-scale integrated network with various data traffic such as Video, voice etc instead of homogenous data traffic.

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