一、民航ATM网络ATM网络已成为21世纪宽带通信的关键技术,并被国际电联(CCITT)确定为宽带综合业务数字网(B—ISDN)的基本传送方式。ATM(ASYNCHRONOUSTRANSFERMODE)简称异步转移模式,是一种集传输与交换于一体的通信模式,具有传输速度快、带宽高、时延低、距离不受限制等特点。它具有集语音、图像和数据传输于一体的技术特色,并具有灵活性、高速率、多业务、 I. ATM network of civil aviation ATM network has become the key technology of broadband communication in the 21st century and has been identified as the basic transmission mode of broadband integrated services digital network (B-ISDN) by the International Telecommunications Union (CCITT). ATM (ASYNCHRONOUSTRANSFERMODE) referred to as asynchronous transfer mode, is a set of transmission and exchange in one mode of communication, with the transmission speed, high bandwidth, low latency, unlimited distance and so on. It has the voice, image and data transmission in one of the technical characteristics, and has the flexibility, high-speed, multi-service,