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邮电部数据通信技术研究所于1986年研制成中容量用户电报/低速数据程控交换系统并投入使用。到目前为止这个交换系统已在四个城市开通,其中在最早开通的交换机已正常运行了两年,取得了很大的经济效益。 该系统是我国首次研制成功的中容量程控数据交换系统。系统采用比特取样交织复用技术支持的时分多址总线交换技术,完成字符交换。系统采用微型计算机做控制机,64个微型计算机以多重处理的方式工作,完成交换系统的所有控制任务。该交换系统每秒可处理8次呼叫。交换机采用积木方式,以64线为一
Ministry of Posts and Telecommunications Data Communications Technology Research Institute in 1986 developed into the capacity of the user telegraph / low-speed data-controlled exchange system and put into use. So far this exchange system has been opened in four cities, of which the earliest opened switches have been in normal operation for two years and achieved great economic benefits. The system is the first successful development of China’s capacity-controlled data exchange system. System uses bit sampling interleaving multiplexing technology to support time-division multiple access bus exchange technology to complete the exchange of characters. System uses a microcomputer as the control machine, 64 micro-computer to multi-processing approach to complete the exchange system of all control tasks. The switching system can process eight calls per second. Switch using building blocks to 64 lines for one