Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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YD/T 1550.8-2007 Technical Specification for 2GHz WCDMA Digital Cellular Mobile Communication Network Iub Interface(Phase I)Part 8:User Plane Protocol for DCH Data Streams 330.0 via email in 1~3 business day valid
GB/T 14716-1993 specification for stored program control analogue private automatic branch telephone exchange system 750.0 via email in 1~3 business day valid
YD/T 1880-2009 The Technical Requirement of Softswitch and Circuit Switching Network Interworking between Networks 120.0 via email in 1~3 business day valid
YD/T 1545.2-2007 Technical Specification for Uu Interface of 2GHz WCDMA Digital Cellular Mobile Communication Network Layer 2 (Phase Ⅰ) Part 2:RLC 795.0 via email in 1~3 business day valid
YD/T 1543.1-2007 Technical Specification for 2GHz WCDMA Digital Cellular Mobile Communication Network Iu Interface (Phase Ⅰ)Part 1:General 270.0 via email in 1~3 business day valid
YD/T 5040-2005 Design Specifications of Engineering for Telecommunication Power Supply Equipment Installation (excluding the Annexes) 160.0 via email in 1 business day valid
YD/T 1476-2006 Technical Specification for BGP/MPLS VPN 330.0 via email in 1~3 business day valid
YD/T 1996.1-2009 Technical requirements for access network very high speed digital subscriber line 2 (VDSL2) Part 1: General requirements 420.0 via email in 1~3 business day valid
YD/T 2038-2009 Key management of end-to-end data communication for application in mobile network 180.0 via email in 1~3 business day valid
YD/T 1587.1-2007 Technical Specification for 2GHz cdma2000 Digital Cell Mobile Communication Network Management (Phase Ⅰ)Part 1 Configuration Network Resource Model 390.0 via email in 1~3 business day valid
GB/T 30246.3-2013 Home Network - Part 3: Internal Gateway Specification 480.0 via email in 1~5 business day valid
GB 3376-1982 Inband pulsing single frequency line signalling system for telephone automatic switching network 90.0 via email in 1~3 business day valid
YD/T 1521-2006 Testing Specification Routing Rrotocol Interoperability 1605.0 via email in 1~3 business day valid
GB/T 15941-1995 Requirements for synchronous digital hierarch (SDH) optical fiber cable line systems of national public telecommunication network 600.0 via email in 1~8 business day abolished
YD/T 1878.2-2009 800MHz/2GHz cdma2000 Digital Cell Mobile Communications Network (HRPD)Network Management Technical Specification Part 2:Performance Network Resource Model 240.0 via email in 1~3 business day valid
YD/T 1378-2005 The technical requirement of No.7 signalling between gateway office for Inter-Public telecom network 630.0 via email in 1~8 business day valid
GB/T 11590-2011 International data transmission services and optional user facilities in public data networks and ISNDs 390.0 via email in 1~3 business day valid
YD/T 1443-2006 Technical Requirements of Generic Framing Procedure(GFP) 480.0 via email in 1~3 business day abolished
GB/T 13428-1992 Methods of measurement for the delta modulation equipment 180.0 via email in 1~3 business day valid
GB/T 21641-2008 Technique requirements of video conferencing system inter working between different technologies 720.0 via email in 1~8 business day valid
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