关于“国家信息基础结构”规划的考虑

SOME CONSIDERATIONS IN PLANNING THE NATIONAL INFORMATION INFRASTRUCTURE

本文介绍“信息高速公路”的国家信息基础结构(NII),特别对其中通信网基础设施在规划时应该了解和考虑的问题作了简单说明.文中指出信息技术有通信网、计算机和微电子/光电子三个层次,侧重解释通信网发展方向是数字话音、计算机数据、和压缩编码图象与电视的宽带综合业务数字网(B-ISDN)传输采用同步数字系列(SDH)、由光纤构成同步网(SONET),交换采用异步转移模式(ATM)、程控趋向于高级智能网(AIN).文中提到信息应用,包括专用的区域网(LAN/MAN/WAN),立即开通电子数据互换(EDI)和电子邮箱(E-maiI)等数据业务,也可利用小天线地面站(VSAT)卫星通信.用户加装计算机,实现多媒体通信(multimedia).文中又讲起个人移动通信(PCS),其无线接入(wirelessaccess)也属于通信基础设施的组成部分.本文最后讲到信息产业,强调发展信息制造工业的迫切重要性.

The paper introduces the National Information Infrastructure (NII) of the 'Infor-mation Superhighway' and in particular, it explains some considerations in planning the Telecommunication Network Infrastructure. Although the information technology consists of telecommunications, computer/saftware, and microelectronics/optoelectroni-cs, this paper deals mostly with the telecommunications, stating that the Broadband Jntograted Services Digital Network (B-ISDN) is operated on the digital audio, com-puter data, and compressed digital video communications altogether. The transmission relies upon the Synchronous Digital Hierarchy(SDH), using fiber cable to form the Synchronous Optical NETwork(SONET), while the switching will adopt the Asynch-ronous Transfer Mode (ATM), with the Stored Program Control (SPC) offices upgraded to the Advanced Intelligent Network (AIN). For the information applications, the paper explains the functions of private networks LAN/MAN/WAN, emphasizing the operation of the Electronic Data Interchange (EDI) and Electronic Mail (E-mail) data services, and use of Very Small Aperture Terminal(VSAT)satellite communication. In addition, it predicts that multimedia services will be available for those sabscribers installed with personal computers.The paper mentions the mobile radio Communication and Personal Communication Servicce (PCS), asserting that the Wireless Access would be included in the telecommunication network infrastructure.Finally, the paper explains the importance of building the Information Industry, and emphasizes especially the urgent need for developing the information in dustry in China.