卫星通信、无线通信和光纤通信是现代通信的三大支柱,而光纤通信是主体。在信息高速公路上将使用B—ISDN、ATM等先进技术。 信息高速公路的全部内涵,包括通信网、计算机、信息和人四部分。通信网是一基本支撑环境,它是一高速、宽带、互连、互操作的大型广域网,能够传输从低速到高速的多媒体信息。 Satellite communications, wireless communications and fiber-optic communications are the three pillars of modern communications, and fiber-optic communications are the mainstay. In the information highway will use B-ISDN, ATM and other advanced technologies. The full content of the information highway, including communications network, computer, information and people in four parts. Communication network is a basic support environment, it is a high-speed, broadband, interconnection, interoperability of large-scale wide area network, can transmit low-speed to high-speed multimedia information.