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数据通信和电信领域日益变化的需要是异步传输模式(ATM)迅速发展的推动力量.采用局域网(LAN)的数据通信用户正在发现,随着LAN必须服务的用户数和数据量的大大增长,现有的LAN结构正在显得力不从心.工业分析家预期,随着LAN上的视频注释和电视会议等多媒体应用的涌现,数据量还会有飞跃的增长.此外,LAN不非常适合处理时间敏感的信息,如音频和视频.随着通信量的增长,网络正在发生变化,因为它越来越脱离局域网的概念.大公司用户正在使用公用电话线路将分布在各地的办事机构连接成全企业网络.同时,电信公司正在将新的业务加到电话系统上,其中包括传输视频信号.但是,目前的电信结构即时分多路复用(同步传输方式)结构不能有效处理本质上是分散的数据通信和压缩视频.
The growing need for data communications and telecommunications is a driving force behind the rapid development of Asynchronous Transfer Mode (ATM). Data communications using LANs are finding that as the number of users and data that the LAN has to serve grows significantly, Some LAN architectures are becoming overwhelmed.Industrial analysts expect the amount of data to increase dramatically as video annotations on LANs and multimedia applications such as videoconferencing appear.The LAN is also not well suited to dealing with time-sensitive information, Such as audio and video.With the increase in traffic, the network is changing, because it is more and more out of the concept of local area network.Users of large companies are using public telephone lines will be distributed throughout the offices connected to the entire enterprise network.At the same time, telecommunications Companies are adding new services to the telephone system, including the transmission of video signals, but the current telecom fabric instant multiplexed (synchronous transmission) architecture does not effectively handle essentially distributed data communications and compressed video.