帧中继及其应用钱同惠，沈其聪随着技术和经济的快速发展，人们对高效、快捷通信手段的要求愈来愈高，数据、图像等非话业务继电话之后已成为当今世界通信发展的重要方向。据统计，在世界范围内，近几年非话通信业务平均年增长率已高达２０％以上，多媒体技术、计算机网络... Frame Relay and Its Application QIAN Tong-hui, SHEN Qicong With the rapid development of technology and economy, people are demanding more and more efficient means of communication. Non-speech services such as data and images have become the development of communication in today’s world The important direction. According to statistics, in the world, the average annual growth rate of non-verbal communication services in recent years has been as high as over 20%. Multimedia technology, computer network ...