Home / Standards / GB/T 16974-1997 GB/T 16974-1997 Abolished Information technology -- Data communication -- X25 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 废止 Issue Date 1997-09-02 Implementation 1998-04-01 Responsible Dept 国家标准委 Drafting Unit N/A