2025-12-30 10.8.118.215
Code of China Chinese Classification Professional Classification ICS Classification Latest Value-added Services

Code of China
International Standard List: Data communication networks

GB/T 13503-1992 Generic specification for digital microwave radio relay communication equipment 
  Issued on: 1992-6-20   Translation Price(USD): 240.0
GB/T 13158-1991 Compatibility test procedures of clock and synchroni-zation equipment of digital switch introduced into di-gital network 
  Issued on: 1991-9-16   Translation Price(USD): 120.0
GB/T 13127-1991 Specifications for interworking of chinese ideogram teletex on public telecommunication networks-The terminal equipment 
  Issued on: 1991-8-15   Translation Price(USD): 210.0
GB/T 13427-1992 Performance requirement of the delta modulation equipment 
  Issued on: 1992-3-10   Translation Price(USD): 420.0
GB/T 13428-1992 Methods of measurement for the delta modulation equipment 
  Issued on: 1992-3-10   Translation Price(USD): 180.0
SJ/T 10231-1991 Technical requirement of wire voice - Band modulation/demodulator for Type 300bit/s 
  Issued on: 1991-5-28   Translation Price(USD): 204.0
GB/T 12640-1990 Methods of measurement for the digital microwave radio relay communication equipments 
  Issued on: 1990-1-2   Translation Price(USD): 450.0
GB/T 12171-1990 Specification for TDM/FDM60-channel transmultiplexing equipments used in the telecommunication network 
  Issued on: 1990-1-12   Translation Price(USD): 450.0
GB 12048-1989 Requirements for clock and synchronization equipment used in the digital network 
  Issued on: 1989-01-02   Translation Price(USD): 100.0
GB/T 11600-1989 Use on public data networks of data terminal equipment(DTE) which is designed for interfacing to asynchronous duplex V-series MODEMS 
  Issued on: 1989-08-21   Translation Price(USD): 264.0
GB/T 11599-1989 Use on public data networks of data terminal equipment(DTE) which is designed for interfacing to synchronous V-series MODEMS 
  Issued on: 1989-08-21   Translation Price(USD): 150.0
GB/T 9408-1988 Specifications for colour TV modulation equipment(1TV+1 sound program)-Used in long-haul terestrial analog radio-relay systems 
  Issued on: 1988-6-23   Translation Price(USD): 150.0
YD 336-1988 Digital Line Signalling for Manual Toll Exchange to local Exchange 
  Issued on: 1988-1-13   Translation Price(USD): 120.0
GB/T 7557-1987 General characteristics complying with the network performance objectives for 300 channel carrier telephone systems on standardized 1. 2/4. 4mm coaxial cable pairs 
  Issued on: 1987-03-02   Translation Price(USD): 180.0
GB/T 7556-1987 General characteristics complying with the network performance objectives for 60 channel carrier telephone systems on symmetric cable pairs 
  Issued on: 1987-03-02   Translation Price(USD): 260.0
GB/T 7436-1987 of TDM equipment operating on analog telephone-type circuit for telegraph and lower-speed data 
  Issued on: 1987-3-16   Translation Price(USD): 240.0
GB/T 7555-1987 General characteristics complying with the network performance objectives for 12 channel carrier telephone systems on open-wire pairs 
  Issued on: 1987-03-26   Translation Price(USD): 220.0
GB/T 7585-1987 series and radio-frequency channel arrangement for analog microwave relay systems 
  Issued on: 1987-3-27   Translation Price(USD): 150.0
GB/T 4827-1984 Requirements of data transmission at 50 bit/s 
  Issued on: 1984-01-02   Translation Price(USD): 130.0
GB 4575-1984 Frequency comparison pilot series for the FDM systems in the toll communication network 
  Issued on: 1984-07-17   Translation Price(USD): 30.0
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