Home / Standards / GB/T 5437-1985 GB/T 5437-1985 Active Document facsimile (group 3) transmission requirement 话路传真 (三类机) 传输要求 Standard Type GBT ICS 33.040.70 CCS M16 Status 现行 Issue Date 1985-09-29 Implementation 1986-06-01 Responsible Dept 工业和信息化部(通信) Drafting Unit 工业和信息化部(通信)