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ISDN的高速度想必用户早已耳濡目染,但这新生事物若闹点儿毛病又该如何对症下药呢?还是让我们学学这位作者的经验。
The high speed of ISDN presumably has long been affected by the user, but how to deal with this new thing if trouble? Or let us learn the author’s experience.