Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 5438-1985 Characteristics and measuring methods for monophonic and stereophonic transmissions 180.0 via email in 1~3 business day valid
JT/T 627-2005 Technical requirements of VHF marine data communication system for inland waterway 105.0 via email in 1~3 business day valid
YD/T 1925-2009 The Requirements for H.248-Based IP User Terminal Device 180.0 via email in 1~3 business day valid
YD/T 1616-2007 Technical Requirements for IP Multicast Service 300.0 via email in 1~3 business day valid
GB/T 13168-1991 General specification for 8MHz (1800ch) carrier systems on standardized 2.6/9.5mm coaxial cable pairs 120.0 via email in 1~3 business day abolished
YD/T 1659-2007 Testing Methods of Security for Broadband Network Access Server 630.0 via email in 1~3 business day valid
GB/T 14132-1993 requirements for digital line systems on symmetric pair cables used in telecommunication network 120.0 via email in 1~3 business day abolished
YD/T 1584.4-2007 Technical Specification for 2GHz Digital Cellular Mobile Communications Network Management General Part 4 CORBA based Interface Design 1860.0 via email in 1~3 business day valid
YD/T 1441-2006 Technical requirements of IPv4 mobility 450.0 via email in 1~3 business day valid
YD/T 2039-2009 Authentication mechanism of end-to-end data communication for application in Mobile Network 480.0 via email in 1~3 business day valid
YD/T 1991-2009 Technical requirements for N×40Gbit/s optical wavelength division multiplexing (WDM) systems 420.0 via email in 1~3 business day abolished
YD/T 1521-2006 Testing Specification Routing Rrotocol Interoperability 1605.0 via email in 1~3 business day valid
YD/T 1439-2006 Router security test methods-high end router(IPv4) 420.0 via email in 1~3 business day valid
GB/T 12171-1990 Specification for TDM/FDM60-channel transmultiplexing equipments used in the telecommunication network 450.0 via email in 1~3 business day abolished
YD/T 985-1998 Regulations for Establishment of Communications Between Audiovisual Terminals With 3 Or More Digital Channels At Below 1930kbit/S 570.0 via email in 1~3 business day valid
YDN 054-1997 Functional Characteristics of Asynchronous Transfer Model of B-ISDN 180.0 via email in 1~3 business day valid
YD/T 1693-2007 Technical Requirements for IP Storage Switch Based on Fibre Channel 240.0 via email in 1~3 business day valid
YD/T 1188-2008 Technical Specification for Access Network - ADSL/ADSL2+CPE 225.0 via email in 1~3 business day valid
YD/T 1899-2009 Technical Requirements of Deep Packet Inspection Device 300.0 via email in 1~3 business day valid
YD/T 1546-2007 2GHz WCDA Digital Cellular Mobile Communication Network—Uu Interface Technical Specification of RRC 10000.0 via email in 1~3 business day valid
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