Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
LoginRegister
Position: Search valid to be valid superseded to be superseded abolished to be abolished
Standard No. Title Price(USD) Delivery Status Add to Cart
GB/T 14132-1993 requirements for digital line systems on symmetric pair cables used in telecommunication network 120.0 via email in 1~3 business day abolished
GB/T 1493-1979 Technical requirements for common battery telephones and automatic telephones 300.0 via email in 1~3 business day abolished
GB/T 13995-1992 requirements for TDM/FDM 60 - Channel transmultiplexing equipment 375.0 via email in 1~3 business day abolished
YD/T 885-1997 Technical requirement and test method of 30-channel pulse code modulation subscriber loop terminal equipment at 2048kbit/s 570.0 via email in 1~3 business day abolished
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
GB 5322-1985 Technical requirements and testing methods for crossbar private automatic branch exchange 105.0 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
GB 6880-1986 Measuring methods of 30 channels pulse code modulation multiplex equipment at 2048 kbit/s 650.0 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 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 1116-2001 Digital Distribution Frame with Wire Sleeve Coaxial Connectors 450.0 via email in 1~3 business day abolished
YD/T 631-1993 Technical requirement and test method of 2/34Mbit/s aggregate number-jump digital multiplex equipment 810.0 via email in 1~5 business day abolished
GB 6878-1986 Technical requirements and testing methods for local crossbar telephone switching systems 180.0 via email in 1~3 business day valid
YD/T 794-1996 Technical requirement and test method for digital multiplex equipment at 704/2048kbit/s 650.0 via email in 1~3 business day abolished
GB/T 1492-1979 Method of test for telephones 570.0 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 14131-1993 requirements for digital line systems on coaxial pair cables used in telecommunication network 105.0 via email in 1~3 business day abolished
YD 335-1988 Digital Line Signalling for Intertoll Exchange 210.0 via email in 1~3 business day abolished
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 14130-1993 requirements for digital sections of metallic cables used in telecommunication network 150.0 via email in 1~3 business day abolished
About Us | Contact Us | Payment
Tel: +86-10-8572 5655 | Fax: +86-10-8581 9515 | Email: coc@codeofchina.com | Send me a messageQQ: 672269886
Copyright: Codeofchina Inc 2008-2020