Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 15124-1994 Information processing system-Data communication-Multilink procedures 180.0 via email in 1~3 business day valid
GB/Z 17976-2000 Information technology - Open Systems Interconnection-Tutorial on naming and addressing 420.0 via email in 1~3 business day valid
GB/T 20851.2-2007/XG1-2012 Electronic toll collection—Dedicated short range communication—Part 2:Data link layer 360.0 via email in 1~3 business day valid
GB/T 19897.4-2005 Automatic meter reading system lower communication protocol—Part 4:Data link layer using HDLC protocol 750.0 via email in 1~3 business day valid
GB/T 20851.2-2007 Electronic toll collection—Dedicated short range communication—Part 2:Data link layer 360.0 via email in 1~3 business day superseded
GB/T 17968-2000 Information technology--Telecommunications and information exchange between systems--Elements of management information related to OSI Data Link Layer STANDARDs 900.0 via email in 1~10 business day valid
GB/T 16653-1996 ISDN data link layer specification for frame mode bearer services via email in 1~3 business day valid
GB/T 19897.4-2005 Automatic meter reading system lower communication protocol—Part 4:Data link layer using HDLC protocol 750.0 via email in 1~3 business day valid
GB/T 7421-2008 Information technology - Telecommunications and information exchange between systems - High-level data link control (HDLC) procedures 1740.0 via email in 1~3 business day valid
GB/T 17547-1998 Information technology - Open System Interconnection - Data link service definition 375.0 via email in 1~3 business day valid
GB/T 28036-2011 Information processing - Character structure for start/stop and synchronous character oriented transmission 90.0 via email in 1~3 business day valid
GB/T 14399-2008 Information technology - Telecommunications and information exchange between systems - High-level data link control procedures - Description of the X.25 LAPB-compatible DTE data link procedures 660.0 via email in 1~8 business day valid
GB/T 16724.2-1996 Information technology - Thelecommunication and information exchange between systems-X.25-DTE conformance testing - Part 2: Data link layer conformance test suite 2850.0 via email in 1~3 business day valid
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