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在数据信息爆炸式增长的同时，作为信息传输媒介的计算机网络发展也可谓一日千里。以计算机为主开发的因特网（Ｉｎｔｅｒｎｅｔ），采用的是路由技术（ＩＰ技术）。而传统的以电信为主开发的宽带综合业务数字网（Ｂ－ＩＳＤＮ），其核心是ＡＴＭ交换技术。ＩＰ的崛起向ＡＴＭ
At the same time as the explosion of data and information, the development of the computer network as an information transmission medium is also booming. Computer-based development of the Internet (Internet), the use of routing technology (IP technology). The traditional broadband-based Integrated Services Digital Network (B-ISDN) developed mainly by telecommunications is the core of ATM switching technology. The rise of IP to ATM