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邮电部发布２１项通信行业标准和技术规定及补充文件邮电部近期分别发布２１项通信行业标准（推荐性标准）和《接入网概貌》技术规定以及《集成电路（ＩＣ）卡公用付费电话系统各级管理中心间信息交换格式及通信协议》等标准。各项标准的名称和编号见附表。附表２１项通信...
Ministry of Posts and Telecommunications released 21 communications industry standards and technical regulations and supplementary documents Recently, the Ministry of Posts and Telecommunications issued 21 communications industry standards (Recommended Standards) and “Access Network Overview” technical regulations and “Integrated Circuit (IC) Card Public Pay Telephone System Management information exchange between centers at various formats and communication protocols ”and other standards. The standard names and numbers see Schedule. Schedule 21 communications ...