Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 9771.4-2008 Single-mode optical fibres for telecommunication - Part 4: Characteristics of a dispersion-shifted single-mode optical fibre 120.0 via email in 1~3 business day valid
YD/T 1258.3-2003 The series of indoor optical fibre cables part 3:dual-fibre optical cable 270.0 via email in 1~3 business day abolished
YD/T 1331-2004 Techincal requirement of Service Switching Point(SSP)equipment for Wireless Intelligent Network (WIN)phase2 in 800MHz CDMA digital cellular mobile telecommunication network 540.0 via email in 1~3 business day valid
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
GB/T 14731-1993 Synchronous digital hierarchy bit rates 45.0 via email in 1~3 business day abolished
YD/T 1842-2009 Test Method for User Equipment HSUPA Protocol Conformance of 2GHz TD-SCDMA Digital Cellular Mobile Communication Network via email in business day abolished
YD/T 1739-2008 Security Protection Testing Requirements for Value Added Service Network (Messaging Network) 210.0 via email in 1~3 business day valid
GB/T 15859-1995 Preferred matching values for the interconnection of equipment in audio-visual, video and television systems 135.0 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
YD/T 1373-2008 Technical Requirements for Uu Interface of 2GHz TD-SCDMA Digital Cellular Mobile Communication Network Layer 3 Technical Specification:RRC Protocol 12810.0 via email in 1~10 business day valid
YD/T 1877-2009 Testing Method for (HRPD)(Phase 2)Air Interface in 800MHz/2GHz cdma2000 Digital Cellular Mobile Communication Networks Network Compatibility 420.0 via email in 1~3 business day valid
GB/T 26261-2010 General technical requirements of used telecommunication equipment appraisal 120.0 via email in 1~3 business day valid
YDC 029-2003 Low and High Frequency EMC Mitigation Techniques for Telecommunication and Systems 240.0 via email in 1~3 business day valid
GB/T 6163-1985 Methods of measurement on radio receivers for FM broadcast transmissions 645.0 via email in 1~8 business day abolished
SJ/T 11199-1999 Piezoelectric quartz crystal blank 90.0 via email in 1~3 business day abolished
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
GB/T 30288-2013 Coordinate System for Navigation Satellite System 480.0 via email in 1~3 business day valid
GB/T 13993.4-2002 series of optical fibre cables for telecommunication - Part 4: Outdoor optical fibre cables for access networks 120.0 via email in 1~3 business day superseded
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