Home / Standards / GB/T 20185-2006 GB/T 20185-2006 Active Optical interface requirements for equipments and systems relating to the synchronous digital hierarchy 同步数字体系设备和系统的光接口技术要求 Standard Type GBT ICS 33.040.20 CCS M14 Status 现行 Issue Date 2006-04-05 Implementation 2006-10-01 Responsible Dept 工业和信息化部(通信) Drafting Unit N/A