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
YD/T 1825-2008 Technical Requirement of IPTV Terminal Device Set-Card Separation 390.0 via email in 1~3 business day valid
YD/T 1795-2008 Network Management Technical Requirements for 2GHz TD-SCDMA/WCDMA Digital Cellular Mobile Communications Network Element Direct connection Interface Function 90.0 via email in 1~3 business day valid
YD/T 1637-2007 Technical Specification and Testing Methods for N-frequency Capable Equipments of 2GHz TD-SCDMA Digital Cellular Mobile Communication Network 510.0 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 1792.1-2008 Network Management Technical Requirements for 2GHz WCDMA Digital Cellular Mobile Communication Network (Phase Ⅱ)Phase 1:Softswitch-Based Configuration Network Resource Model 450.0 via email in 1~3 business day valid
GB 15539-1995 Technical specifications for trunked mobile radio systems 150.0 via email in 1~3 business day valid
YD/T 1901-2009 Scenarios and General Requirements of Internet Application Awareness System 240.0 via email in 1~3 business day valid
GB/T 3971.3-1983 The test methods for the technical specifications of multi-frequency register signaling for telephone automatic switching network 90.0 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 1596-2007 Technical Specification and Testing Methods for Repeater Used in 2GHz cdma2000 Digital Cellular Mobile Communication Network 390.0 via email in 1~5 business day abolished
YD/T 947-1998 Upper layer protocol profiles for the Q3 and X interface 225.0 via email in 1~3 business day valid
YD/T 1323-2004 Technical requirements for access network Asymmetric Digital Subscriber Line (ADSL) 1800.0 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 1990-2009 General technical requirements for Optical Transport Network 1080.0 via email in 1~3 business day valid
YD/T 2019.1-2009 Test method for broadband customer network equipment based on public telecommunication network Part 1:Gateway 570.0 via email in 1~3 business day valid
GB/T 21645.8-2012 Technical requirements for automatically switched optical network—Part 8:Routing 930.0 via email in 1~3 business day valid
YD/T 1264-2003 General technical requirement of IP telephony and IP fax services:Phase two 2400.0 via email in 1~3 business day valid
YD/T 1350.4-2007 Technical Specification for Interface of WDM Network Management System Part 4:Interface based on CORBA/IDL 2085.0 via email in 1~10 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
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