Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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Position: Search valid to be valid superseded to be superseded abolished to be abolished
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YDN 119.1-1999 Test Specification of China Intelligent Network Equipment - Service Switching Point (SSP) Part 885.0 via email in 1~8 business day valid
YDB 007-2007 Technical Requirements for PSTN/ISDN Simulation Services in NGN 195.0 via email in 1~3 business day valid
YD/T 719-1994 Objective measuring method for loudness rating 450.0 via email in 1~3 business day abolished
YDB 006-2007 Technical Requirements for PSTN/ISDN Emulation Services in NGN 120.0 via email in 1~3 business day valid
YD/T 1377.1-2005 Testing methods of service and protocol of peer to peer short message interworking between networksPart1 : Testing methods of peer to peer short message interworking between PSTN and 675.0 via email in 1~3 business day valid
YD/T 1430-2006 Specification of interworking requirements for one number services 120.0 via email in 1~3 business day valid
YD/T 1377.2-2005 Testing methods of service and protocol of peer to peer short message interworking between networks.Part2 : Tesing methods of peer to peer short message interworking between PSTN and 525.0 via email in 1~3 business day valid
YDN 030.2-1997 Code Number and Dialing Procedure of Universal Personal Telecommunication, Wide Area Centrex Switch (WAC), Vote of Telephone (VOT) and Mass Calling (MAS) Services 90.0 via email in 1~3 business day valid
YD/T 1248.2-2003 Short Message Service Based on PSTN Part 2:Technical Requirements of Transmission Protocol between Short Message Terminal Equipment and Center 585.0 via email in 1~5 business day valid
YD/T 2024-2009 Technical Requirements of Increasing Trunk Capacity for Internet Connections 150.0 via email in 1~3 business day valid
YD/T 2010-2009 Technical Requirements of Services based on the Unified IMS Multimedia Conferencing Service (Release 1) 1050.0 via email in 1~3 business day valid
YDB 005-2007 Technical Requirements for IP multimedia services in NGN 195.0 via email in 1~3 business day valid
YD/T 1589-2006 The Test Methods for Interworking Gateway in Point to Point Short Message Interworking 450.0 via email in 1~3 business day valid
YD/T 1040.2-2000 900/1800MHz TDMA Digital Cellular Mobile Telecommunication Network Short Message Center Equipment Testing Specification Part two:Cell Broadcast Short Message Service 585.0 via email in 1~5 business day superseded
GB 11589-1989 60.0 via email in 1~3 business day superseded
YD/T 1883.1-2009 Technical Requirements and Testing Methods for Voice Service of the Fixed Softswitch Network Part 1:TG and SG Access Mode 540.0 via email in business day abolished
YD/T 1201-2002 Services and basic function requirements for In CS—2 495.0 via email in 1~5 business day valid
YD/T 1474-2006 Technical Requirements of Multi-sesvice Transport Platform (MSTP)Based on SDH——Embedded with MPLS Function 420.0 via email in 1~3 business day valid
YD/T 1248.4-2005 Part Ⅳ:Test methods of short message centre based on PSTN 3090.0 via email in 1~10 business day valid
YD/T 1040.1-2000 585.0 via email in 1~5 business day superseded
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