Home / Standards / GB/T 13167-1991 GB/T 13167-1991 Active Requirements for long haul optical fiber cable systems joined to national public telecommunication network 长途光缆通信系统进网要求 Standard Type GBT ICS 33.180 CCS M33 Status 现行 Issue Date 1991-09-04 Implementation 1992-05-01 Responsible Dept 工业和信息化部（通信） Drafting Unit N/A