摘要
根据当前ＡＴＭ、帧中继与ＳＭＤＳ技术的发展状况，有针对性地进行了分析和比较，说明了它们在现实中应用的意义及发展前景。
According to the present technology development situation of ATM, FR and SMDS, the analysis and comparison have been made to them.It describes their practical significance and future trend.
作者
韩改玲
Tianjin University Han Gailing
