世界信息产业的蓬勃发展 ,实质是依靠数字、网络技术的巨大推动。目前 ATM和IP被认为是未来最有希望的两种组网手段 ,由于 ATM和 IP各自所具有的优劣 ,使它们成为争论的焦点。本文就 ATM和 IP在主要方面的差异作简要比较 :1　网络技术的现状90年代中期以后 ,数据业务在通信业务 The booming development of the world information industry depends on the enormous promotion of digital and network technologies. At present, ATM and IP are considered as the two most promising networking tools in the future. Due to the advantages and disadvantages of ATM and IP, they have become the focus of controversy. This article on ATM and IP in the main differences for a brief comparison: 1 The status quo of the network technology After the mid-90s, data services in the communications business