2025-12-27 10.8.118.215
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Code of China
Chinese National Standard List: Communication network performance index and testing

YD/T 751-1995 Test Method for Networking of Digital Office Telephone Exchange Equipment in Public Telephone Network 
  Issued on: 1995-06-02   Translation Price(USD): 400.0
GB/T 7254-1995 Performance and test methods of the second order digital multiplex equipment operating at 8448 kbit/s and using positive justification 
  Issued on: 1995-4-6   Translation Price(USD): 270.0
GB/T 11324-1995 Performance and test methods of the fourth order digital multiplex equimpent operating at 139264 kbit/s and using positive justification 
  Issued on: 1995-04-06   Translation Price(USD): 270.0
YD/T 729-1994 Test Method for Networking of SPC Subscriber Exchange 
  Issued on: 1994-7-20   Translation Price(USD): 300.0
GB/T 14760-1993 measurement methods of transmission performances on optical fiber cable communication systems 
  Issued on: 1993-1-2   Translation Price(USD): 100.0
YD/T 672-1994 Quality grading criteria of 2/34Mbit/s aggregate number-jump digital multiplex equipment 
  Issued on: 1994-05-18   Translation Price(USD): 150.0
YD/T 673-1994 Quality grading criteria of third order digital multiplex equipment operating at 34368 kbit/s and using positive justification 
  Issued on: 1994-05-18   Translation Price(USD): 130.0
YD/T 671-1994 Quality grading criteria of second order digital multiplex equipment operating at 8448 kbit/s and using positive justification 
  Issued on: 1994-05-18   Translation Price(USD): 130.0
YD/T 674-1994 Quality grading criteria of fourth order digital multiplex equipment operating at 139264 kbit/s and using positive justification 
  Issued on: 1994-05-18   Translation Price(USD): 130.0
GB/T 14133-1993 The transmission performance objectives for mixed analogue-digital public telephone automatic switching network 
  Issued on: 1993-02-04   Translation Price(USD): 250.0
GB/T 13998-1992 methods of the magnetic induced longitudinal EMF, magnetic induced voltage with respect to earth, electric induced current and psophometric voltage on telecommunication lines 
  Issued on: 1992-12-19   Translation Price(USD): 145.0
YD/T 552-1992 Test method of continuity attenuation distortion in communication network 
  Issued on: 1993-01-01   Translation Price(USD):
YD 536-1992 Test method for parameters of digital interfaces for PCM telecommunication system over network 
  Issued on: 1992-04-25   Translation Price(USD): 820.0
YD/T 521-1992 Test Method of Digital Exchange Analog Interfaces and Test Method of Transmission Characteristics Between (2-Wire Or 4-Wire) Analog Interfaces 
  Issued on: 1992-1-25   Translation Price(USD): 330.0
GB/T 5444-1985 The test methods for the technical specifications of subscriber line signalling for automatic telephone switching network 
  Issued on: 1985-10-30   Translation Price(USD): 244.0
GB/T 5442-1985 The test methods for the technical specifications of inband pulsing single frequency line signalling system for automatic telephone switching network 
  Issued on: 1985-10-30   Translation Price(USD): 120.0
GB/T 5443-1985 The test methods for the technical specifications of ringing and tone for automatic telephone switching network 
  Issued on: 1985-10-30   Translation Price(USD): 244.0
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
GB/T 4574-1984 Measuring methods for actual circuit noise and the circuit noise in simulating system loading over the analogue communication network 
  Issued on: 1984-07-17   Translation Price(USD): 340.0
GB 4572-1984 Measuring method for the channel attenuation distortion in the communication network 
  Issued on:   Translation Price(USD): 180.0
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