YD/T 1851-2009 2GHz TD-SCDMA 数字蜂窝移动通信网分布式基站的基带单元设备技术要求
YD/T 1851-2009.2GHz TD-SCDMA Digital Cellular Mobile Telecommunication Network T...
行业标准2023.08.02
YD/T 1851-2009.2GHz TD-SCDMA Digital Cellular Mobile Telecommunication Network T...
行业标准2023.08.02
YD/T 1853-2009.2GHz TD-SCDMA Digital Cellular Mobile Telecommunication Network -...
行业标准2023.08.02
YD/T 1854-2009.2GHz TD-SCDMA Digital Cellular Mobile Telecommunication Network -...
行业标准2023.08.02
YD/T 1125-2001.National No.7 Signaling System Technical Specification - 2Mbit/s...
行业标准2023.08.02
YD/T 1124-2001.The Technical Requirements for Number Portability Service.1范围YD/T...
行业标准2023.08.02
YD/T 1123-2001.Technical Specification for Integrated Switch Equipment.1范围YD/T 1...
行业标准2023.08.02
YD/T 1122-2001.Protocal of Air Intereace for Paging System (EPOC).1范围YD/T 1122规定...
行业标准2023.08.02
YD/T 1127-2001.Technical Requirement of Interworking between No.7 Signalling and...
行业标准2023.08.02
YD/T 1119-2001.Telecommunication cable Foamed polyethylene dielectric superflexi...
行业标准2023.08.02
YD/T 1118.2-2001.Secondary coating materials used for optical fiber Part 2: Modi...
行业标准2023.08.02