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本文介绍了目前国际上较流行的公共包交换数据通信网以及高速公共线路交换数据网的现状和发展动向,还介绍了国际数据通信网的发展及相关技术。 从目前国际数据通信网的发展来看,公共包交挟数据通信网是以发达国家为中心而建立的,逐渐向世界扩展,高速公共线路交换数据网的建立正在各国展开。 这两种网相互补充,将形成基本国际数据通信网。线路交换数据通信网是未来国际通信向着综合服务数字网ISDN发展的前期。这些网和目前的电话、直通电报网通过网间接口和MHS(Mes-sage Handling Environment)技术的采用,将实现网的远程通信和提供各种服务,因此,适应国际数据通信要求的国际数据通信网正在发展中。
This article introduces the current status and trends of the more popular public packet-switched data communications networks and high-speed public line switching data networks in the world. It also introduces the development of international data communications networks and related technologies. From the current development of international data communication network, public packet communication data communication network is based on developed countries as the center and gradually expanded to the world, the establishment of high-speed public line switching data network is being launched in various countries. The two networks complement each other and will form the basic international data communications network. Line-exchange data communications network is the future of international communications towards integrated services digital network ISDN development of the early. These networks and the current telephony and telephony networks, through the use of Mesh Interfaces and Mesh Handling Environment (MHS) technologies, will enable long-range network communication and the provision of various services. Therefore, international data communications that meet the requirements of international data communications Net is developing.