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.
它具有多业务传输特性，能同时传送语音、视频和数据等业务。
The transmission method of ATM belongs to fast packet switching mode, and it provides several services such as voice, video and data.
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