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研究了综合业务数据网（ＩＳＤＮ）通信终端接入互联网的协议关系和ＩＳＤＮ通信终端接入互联网功能的具体实现方法．
This paper studies the protocol relationship of ISDN communication terminal access to Internet and the concrete realization of ISDN communication terminal access to Internet.