Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 15276-1994 Information processing systems - Information exchange between systems - Synchronous transmission signal quality at DTE/DCE interfaces 170.0 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
GB/T 17959-2000 Information technology - Telecommunications and information exchange between systems - 50 - Pole interface connector mateability dimensions and contact number assignments 140.0 via email in 1~3 business day valid
YD/T 1061-2003 The Specification of IP over SDH(ITU-T X.85/Y.1321.MOD) 315.0 via email in 1~5 business day valid
GB/T 14399-1993 Information processing systems-Data communication-High-level data link control procedures-Description of the X.25 LAPB-compatible DTE data link procedures 405.0 via email in 1~5 business day abolished
GB/T 15123-2008 Information technology - Telecommunication and information exchange between systems - DTE/DCE interface back-up control operation using GB/T 3454 interchange circuits 150.0 via email in 1~3 business day valid
GB/T 17179.1-1997 Information technology--Protocol for providing the connectionless-mode network service--Part 1: Protocol specification 660.0 via email in 1~8 business day abolished
GB/T 20531-2006 API Specification for mobile database 90.0 via email in 1~3 business day valid
YD/T 1612-2007 Interconnection and Interoperation Technique Requirements for IPv4-IPv6 Transition 1020.0 via email in 1~3 business day valid
GB/T 30246.9-2013 Home Network - Part 9: Device Description File Specification - Binary Format 620.0 via email in 1~8 business day valid
GB/T 16506.2-1996 Information technology―Telecommunications and information exchange between systems-Protocol combinations to provide and support the OSI Netword Service-Part 2: Provision and support of the connection-mode Netwok service 150.0 via email in 1~3 business day abolished
YD/T 1204-2002 Technical requirement of Always On/Dynamic ISDN (AO/DI)service 390.0 via email in 1~3 business day valid
GB/T 15629.3-1995 Information processing systems - Local area networks - Part 3: Carrier sense multiple access with collision detection(CSMA/CD)access method and physical layer specifications 1650.0 via email in 1~3 business day superseded
GB/T 28036-2011 Information processing - Character structure for start/stop and synchronous character oriented transmission 85.0 via email in 1~3 business day valid
YDC 007-2002 General Framework Requirements for Broadband Metro Area Network 900.0 via email in 1~3 business day valid
YDB 148-2014 Framework for knowledge base in an Internet public opinion monitoring system 284.0 via email in business day
SJ 20967-2007 Subsystem interoperability of the digital message transfer device 4695.0 via email in 1~10 business day valid
GB/T 11015-1989 between data terminal equipment and automatic calling equipment for data communication 180.0 via email in 1~3 business day valid
GB/T 15127-1994 Information processing systems-Data communication-Twisted pair multipoint interconnections 255.0 via email in 1~3 business day abolished
GB/Z 18812-2002 MIME encapsulation of EDI objects 135.0 via email in 1~3 business day valid
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