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Position: Search valid to be valid superseded to be superseded abolished to be abolished
Standard No. Title Price(USD) Delivery Status Add to Cart
GB/T 12640-1990 Methods of measurement for the digital microwave radio relay communication equipments $450.00 via email in 1~3 business day valid
GB/T 13127-1991 Specifications for interworking of chinese ideogram teletex on public telecommunication networks-The terminal equipment $210.00 via email in 1~3 business day abolished
GB/T 13158-1991 Compatibility test procedures of clock and synchroni-zation equipment of digital switch introduced into di-gital network $120.00 via email in 1~3 business day valid
GB/T 13427-1992 Performance requirement of the delta modulation equipment $420.00 via email in 1~3 business day valid
GB/T 13428-1992 Methods of measurement for the delta modulation equipment $180.00 via email in 1~3 business day valid
GB/T 13503-1992 Generic specification for digital microwave radio relay communication equipment $240.00 via email in 1~3 business day valid
GB/T 13994-1992 requirements for a 60 - Channel PCM/ADPCM transcoder equipment $600.00 via email in 1~3 business day abolished
GB/T 13995-1992 requirements for TDM/FDM 60 - Channel transmultiplexing equipment $370.00 via email in 1~3 business day abolished
GB/T 14130-1993 requirements for digital sections of metallic cables used in telecommunication network $150.00 via email in 1~3 business day abolished
GB/T 14131-1993 requirements for digital line systems on coaxial pair cables used in telecommunication network $100.00 via email in 1~3 business day abolished
GB/T 14132-1993 requirements for digital line systems on symmetric pair cables used in telecommunication network $120.00 via email in 1~3 business day abolished
GB/T 14133-1993 The transmission performance objectives for mixed analogue-digital public telephone automatic switching network $250.00 via email in 1~3 business day abolished
GB/T 14398-1993 communication - Arrangements for DTE to DTE physical connection using V.24 and X.24 interchange circuits $120.00 via email in 1~3 business day abolished
GB/T 14399-1993 Information processing systems-Data communication-High-level data link control procedures-Description of the X.25 LAPB-compatible DTE data link procedures $400.00 via email in 1~5 business day abolished
GB/T 14400-1993 Information processing systems-Data communication. High-level data link control balanced classes of procedures. Data-link layer address resolution/negotiation in switched environments $220.00 via email in 1~3 business day valid
GB/T 15629.15-2010 Information technology - Telecommunications and information exchange between systems local and metropolitan area networks - Specific requirements - Part 15: Wireless medium access c $2840.00 via email in 1~3 business day valid
GB/T 15629.2-1995 Information processing systems-Local area networks Part 2: Logical link control $1090.00 via email in 1~10 business day superseded
GB/T 15629.3-1995 Information processing systems - Local area networks - Part 3: Carrier sense multiple access with collision detection(CSMA/CD)access method and physical layer specifications $1650.00 via email in 1~3 business day superseded
GB/T 15698-1995 Information technology―Telecommunications and information exchange between systems―High-level data link control (HDLC)procedures-General purpose XID frame information field content and format $180.00 via email in 1~3 business day superseded
GB/T 15837-1995 Synchronization interface-requirements for digital network $180.00 via email in 1~3 business day abolished
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