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受国家计委委托,邮电部于1991年2月1日至5日在西安对邮电部第十研究所研制的DS-30中大容量程控数字长途电话交换机进行了技术鉴定。DS-30中大容量程控数字长途电话交换机在国内首次采用了功能、话务分担的多微机分级控制方式及相应的软件技术和大容量数字交换网络;第一次成功地使用了计算机位总线通信和分层控制技术,研制出功能齐全、技术先进的数字话务员座席系统。此外,还首次在国
Entrusted by the State Development Planning Commission, the Ministry of Posts and Telecommunications conducted technical appraisals on the large-capacity programmable digital long-distance telephone exchanges developed by the Tenth Institute of the Ministry of Posts and Telecommunications in Xi’an on February 1 to February 5, 1991. DS-30 large-capacity programmable digital long-distance telephone exchange in the country for the first time using features, traffic control of multi-computer classification and the corresponding software technology and high-capacity digital switching network; the first successful use of the computer bit bus communication And hierarchical control technology, developed a fully functional, technologically advanced digital attendant agent system. In addition, for the first time in the country