Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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YD/T 1141-2001 Testing Specification for Giga Bit Ethernet LAN Switch 1035.0 via email in 1~10 business day abolished
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
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 1660-2007 Technical Specification and Testing Methods for NT1+ Plus Equipment 2190.0 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 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
GB/T 15845.3-1995 Performance requirements of andiovisual terminals-System for establishing communication between audiovisual terminals using digital channels up to 2Mbit/s 330.0 via email in 1~3 business day valid
GB/T 28497-2012 The specification of IP over SDH using LAPS 450.0 via email in 1~3 business day valid
YD/T 1916-2009 Technical Specification for IPv6 Network Equipment--Broadband Network Access Server 420.0 via email in 1~3 business day valid
YD/T 1695-2007 Technical Requirements of Access Network for IPTV (Phase I) 240.0 via email in 1~3 business day valid
YDN 049-1997 Technical Specifications for Service Management Points (SMP) of China Intelligent Network Equipment 360.0 via email in 1~3 business day valid
YD/T 1275-2003 Technical specification and testing method for N×64kbit/s baseband modem 435.0 via email in 1~5 business day valid
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