Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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YD/T 742-1995 Technical Requirement and Test Method for Digital Signaling Conversion Equipment at 2048kbit/S 270.0 via email in 1~3 business day valid
YD/T 1355-2005 Technical requirements and test method of Mini-BITS equipment 420.0 via email in 1~5 business day valid
GB/T 13995-1992 requirements for TDM/FDM 60 - Channel transmultiplexing equipment 375.0 via email in 1~3 business day valid
YD/T 786-1995 Technical Requirement for Time-Division Multiplexer at 64kbit/S Access to Digital Network 60.0 via email in 1~3 business day valid
YD/T 1054-2000 Access network technical specification-Integrated digital loop carrier (LDLC) 720.0 via email in 1~3 business day valid
YD/T 1064-2000 Access network technical specifications-Low-speed splitterless asymmetric digital subscriber line system(ADSL.lite) 1200.0 via email in 1~3 business day valid
YD/T 974-1998 Specifications and Measurement Methods for SDH Digital Cross Connect Equipment(SDXC) 1500.0 via email in 1~3 business day valid
YD/T 1070-2000 ZInterface requirement of access network remote equipment 180.0 via email in 1~3 business day valid
YD/T 922-1997 Performance and test methods of the inegrated multiplex equipment using in the digital channel 315.0 via email in 1~5 business day valid
GB/T 13994-1992 requirements for a 60 - Channel PCM/ADPCM transcoder equipment 600.0 via email in 1~3 business day valid
YD 336-1988 Digital Line Signalling for Manual Toll Exchange to local Exchange 120.0 via email in 1~3 business day valid
HB 6096-1986 SZ-01 Digital Information Transmission System 1665.0 via email in 1~10 business day valid
YD/T 822-1996 P×64kbit/S Conference TV Encoded Mode 300.0 via email in 1~3 business day valid
YD/T 787-1995 Test Method of Time-Division Multiplexer at 64kbit/S 90.0 via email in 1~3 business day valid
YD/T 1018-1999 Digital circuit multiplication equipment using ADPCM and DSI 945.0 via email in 1~10 business day valid
YD/T 1356-2005 The specification for user power feeding of ISDN basic access U interface on the switch 210.0 via email in 1~3 business day valid
YD/T 821-1996 Numerical Graphics of Measured Digital Transmission Performances 180.0 via email in 1~3 business day valid
YD/T 748-1995 Limit Value for Maintenance of PDH Digital Channel Error Performances 360.0 via email in 1~3 business day valid
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