This paper discusses the forming and development of broadband ISDN, introduces the basic ATM concepts and principles, and gives the related standands of B-ISDN/ATM made by ITU-T.

• 本文讨论了宽带ISDN的产生和发展，介绍了ATM的基本概念和原理，并给出了ITU－T关于B－ISDN/ATM的有关标准。