Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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YD/T 910.21-1998 900/1800MHz TDMA digital cellular mobile telecommunication netwrok radio interface signaling part (Phase2) 3000.0 via email in 1~3 business day valid
YD/T 997-1999 Specification for VB5.1 interface 2040.0 via email in 1~10 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 1350.1-2005 Technical specification of Wavelength Division Multiplexing (WDM) system network management interface Part1: interface function part 255.0 via email in 1~3 business day valid
GB/T 2789-1981 Technical requirements for network interface for the analogue microwave relay communication systems 120.0 via email in 1~3 business day abolished
YD/T 910.1-1997 900/1800MHz TDMA digital cellular mobile telecommunication network man-machine of mobile station(Phase 2) 1185.0 via email in 1~10 business day valid
YD/T 1263-2003 Technical Requirements for Interworking of network Based on IP with traditional telecommunication network 270.0 via email in 1~3 business day valid
YD/T 1685.2-2007 Technical Specification for 800MHz CDMA Network Management Interface Part 2:SMS Interface 810.0 via email in 1~3 business day valid
GB/T 16813-1997 Technical specifications and test methods of the interface of radio paging system and PSTN 390.0 via email in 1~3 business day valid
GF 005-1994 Technical specification for interface for special mobile communication system accessing public telephone automatic switching network 570.0 via email in 1~5 business day valid
YDN 034.4-1997 ISDN Subscribers - Specification for Network Interfaces. Part 4 Technical Specifications for Supplementary Services 2070.0 via email in 1~3 business day valid
GB/T 17114-1997 Requirement for 160kbit/s subscriber line digital multigain equipment joined to national public telecommunication network 650.0 via email in 1~3 business day abolished
GB/T 3974-1983 Telephone transmission interference allowances for long-distance high-capacity analogue microwave communication systems 90.0 via email in 1~3 business day valid
GB/T 12563-1990 Requirements of terrestrial interface for domestic satellite communications earth stations 180.0 via email in 1~3 business day valid
YDN 108-1998 Technical Specifications for Test V5.2 Interface Consistency 7170.0 via email in 1~3 business day valid
YD/T 1350.3-2005 Technical specification of WDM network management interface Part3:information model based on GDMO/CMIP part 855.0 via email in 1~8 business day valid
GB/T 3384-1982 Parameters of interface for the analogue carrier systems over the network 210.0 via email in 1~3 business day abolished
T/ITS 0027-2015 Data bus interface communication specification for intelligent service terminal of urban bus and trolleybus via email in business day valid
YD/T 855.4-1996 900mhz TDMA Digital Cellular Mobile Communication Network. MAP Specifications 1020.0 via email in 1~3 business day valid
YDN 034.3-1997 ISDN Subscribers - Specification for Network Interfaces Part 3: Technical Specifications for Third-Layer Basic Call Control 1950.0 via email in 1~3 business day valid
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