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序号标准编号标准名称1YDN011—1996中国公用电子数据交换（EDI）业务技术体制（暂行规定）2YDN112—1999中国公用分组交换数据网技术体制（修订）3YD/T1133—2001数据通信名词术语4YD/T781—95分组装（PAD）设备进入公用分组交换数据网检测方法5YD/T782—95分组式终端进入公用
Serial number standard number standard name 1YDN011-1996 China’s public electronic data exchange (EDI) business technology system (Provisional Regulations) 2YDN112-1999 China’s public packet-switched data network technology system (revised) 3YD / T1133-2001 data communications terminology 4YD / T781- 95 sub-assembly (PAD) equipment into public packet-switched data network detection method 5YD / T782-95 packet terminal into the public