Home / Standards / GB/T 17534-1998 GB/T 17534-1998 Active Information technology--Open systems interconnection--Physical service definition 信息技术 开放系统互连 物理服务定义 Standard Type GBT ICS 35.100.10 CCS L79 Status 现行 Issue Date 1998-11-05 Implementation 1999-06-01 Responsible Dept 国家标准委 Drafting Unit N/A