Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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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 1901-2009 Scenarios and General Requirements of Internet Application Awareness System 240.0 via email in 1~3 business day valid
YD/T 1141-2001 Testing Specification for Giga Bit Ethernet LAN Switch 1035.0 via email in 1~10 business day superseded
GB/T 15845.4-1995 Performance requirements of audiovisual terminals--Narrow-band visual telephone systems and terminal equipment 195.0 via email in 1~3 business day abolished
YDN 118-1999 Test Method of Synchronization Network Node Clock-Following Performance 330.0 via email in 1~3 business day valid
GB/T 11590-2011 International data transmission services and optional user facilities in public data networks and ISNDs 390.0 via email in 1~3 business day valid
YD/T 1963-2009 Distance Learning Communications Platform Communication Protocols 300.0 via email in 1~3 business day valid
GB/T 13428-1992 Methods of measurement for the delta modulation equipment 180.0 via email in 1~3 business day valid
GB/T 9541-1988 2400 bits per second duplex modem using the echo cancellation technique standardized for use on the general switched telephone network and on point-to-point 2 wire leased telephone-type 5070.0 via email in 1~3 business day valid
YD/T 1701-2007 Security Requirements of H.323 Network 1050.0 via email in 1~3 business day valid
GB/T 7618-1987 Electrical characteristics for unbalanced double-current interchange circuits for general use with integrated circuit equipment in the field of data communications 225.0 via email in 1~3 business day valid
YD/T 1927-2009 Technical Requirements for the Softswitch Services Access Control Device 270.0 via email in 1~3 business day valid
YD/T 1660-2007 Technical Specification and Testing Methods for NT1+ Plus Equipment 2190.0 via email in 1~3 business day valid
YD/T 1912-2009 Security Technical Requirements and Test Methods for Media Server Based on Softswitch 240.0 via email in 1~3 business day valid
DL/T 412-1991 Technical requirements for 600bit/s frequency shift keying (FSK) modem of electric power system 150.0 via email in 1~3 business day valid
YD/T 1243.4-2008 Technical Requirements for Media Gateway-Providing Multimedia Service 1875.0 via email in 1~3 business day valid
YD/T 1627-2007 Security requirements of ethernet switch equipment 180.0 via email in 1~3 business day valid
YD/T 1696-2007 Technical Specification for STB and IPTV Service Platform Interface 390.0 via email in 1~5 business day superseded
YD/T 1246-2002 Test method of ATM switch equipment 3300.0 via email in 1~10 business day valid
YD/T 1137-2001 Technical requirements and test methods for frame relay device 795.0 via email in 1~8 business day valid
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