Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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YD/T 1479-2006 Technical Requirements and Testing Methods of Primary Reference Clock Equipment 270.0 via email in 1~3 business day valid
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
YD/T 1446-2006 Testing Methods for Media Gateway-ATM Trunk Media Gateway 1410.0 via email in 1~3 business day valid
YD/T 1922-2009 The Requirements for H.323-Based IP user Terminal Device 180.0 via email in 1~3 business day valid
YD/T 1523-2006 Testing Methods to Session Initiation Protocol Server 600.0 via email in 1~3 business day valid
YD/T 1350.2-2005 Technical specification of Wavelength Division Multiplexing (WDM) system network management interface Part2: the genertic information model part 975.0 via email in 1~10 business day valid
YD/T 1925-2009 The Requirements for H.248-Based IP User Terminal Device 180.0 via email in 1~3 business day valid
YD/T 1712-2007 Environmental Requirements for Telecommunication Houses 120.0 via email in 1~3 business day valid
YD/T 1713-2007 Technical Requirements and Testing Methods of Incoming Power Disturbance Alarm System for Main Distribution Frame 450.0 via email in 1~3 business day valid
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 1271-2003 Ring generator for telecommunication equipment 225.0 via email in 1~3 business day valid
YD/T 1923-2009 The Requirements for MGCP-Based IP User Terminal Device 180.0 via email in 1~3 business day valid
YD/T 1536.1-2006 Requirements and Messagement Methods of Electromagnetic Information Security for Telecommunications Equipment Part 1:Information Leakage of Electromagnetic Radiation 150.0 via email in 1~3 business day valid
T/ITS 0023-2015 Road traffic information service Spatial data requirement for public - transport hub transfer via email in business day valid
YD/T 1924-2009 The Requirements for SIP-Based IP User Terminal Device 180.0 via email in 1~3 business day valid
GB/T 29234-2012 Security technical requirements for broadband customer network based on telecommunication network 270.0 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 960.0 via email in 1~10 business day valid
YD/T 2020-2009 Technical requirement for subscriber database (SDB) of PSTN 210.0 via email in 1~3 business day valid
YD/T 1417-2005 Testing methods for access network equipment-Signle pair High-bit-rate Digital Subscriber Line (SHDSL) 360.0 via email in 1~5 business day valid
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