YD/T 1640-2007.Technical Specification for Softswitch and Digital Trunking Mobil...

行业标准2023.07.31

YD/T 1641-2007.Technical Specification for Internet Network Service Quality.1苑圈Y...

行业标准2023.07.31

YD/T 1642-2007.Testing Methods for Internet Network Service Quality.1范围YD/T 1642...

行业标准2023.07.31

YD/T 1643-2007.Technical Specification and Testing Methods for Compatibility bet...

行业标准2023.07.31

YD/T 1646-2007.Technical Specification for Push to Talk Termination over Cellula...

行业标准2023.07.31

YD/T 1767.1-2008.Technical Requirements for Automatically Switched Optical Netwo...

行业标准2023.07.31

YD/T 1647-2007.Testing Motheds for Push to Talk Termination over Cellular.1范围YD/...

行业标准2023.07.31

YD/T 1649-2007.Testing Methods for Push to Talk Server over Cellular.1范围YD/T 164...

行业标准2023.07.31

YD/T 1654-2007.Service Specification for IPTV.1范围YD/T 1654规定了开展IPTV业务时的业务需求。YD/T...

行业标准2023.07.31

YD/T 1652-2007.Testing Methods for IP User Service Gateway.1范围YD/T 1652规定了IP用户业务...

行业标准2023.07.31