Home / Standards / GB/T 16974-2009 GB/T 16974-2009 Active Information technology - Data communications - X.25 packet layer protocol for data terminal equipment 信息技术 数据通信 数据终端设备用X.25包层协议 Standard Type GBT ICS 35.100.30 CCS L78 Status 现行 Issue Date 2009-09-30 Implementation 2009-12-01 Responsible Dept 国家标准委 Drafting Unit N/A