2024-11-22 18.217.237.169
Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
Position: Search valid to be valid superseded to be superseded abolished to be abolished
Standard No. Title Price(USD) Delivery Status Add to Cart
DB31/T 1324-2021 5G network quality testing method based on user perception 495.0 via email in 1~5 business day valid,,2022-2-1
GB 4572-1984 Measuring method for the channel attenuation distortion in the communication network 180.0 via email in 1~3 business day superseded,1996-6-1,1985-4-1
GB 4575-1984 Frequency comparison pilot series for the FDM systems in the toll communication network 30.0 via email in 1~3 business day abolished2005-10-14 ,,1985-4-1
GB 7609-1987 Total distortion measuring method for PCM channel in the telecommunication network 340.0 via email in 1~3 business day superseded,,
GB/T 11324-1995 Performance and test methods of the fourth order digital multiplex equimpent operating at 139264 kbit/s and using positive justification 270.0 via email in 1~3 business day valid,,1995-1-2
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 145.0 via email in 1~3 business day abolished2017-12-15,,1993-8-1
GB/T 14133-1993 The transmission performance objectives for mixed analogue-digital public telephone automatic switching network 250.0 via email in 1~3 business day abolished2005-10-14,,1993-8-1
GB/T 14760-1993 measurement methods of transmission performances on optical fiber cable communication systems 100.0 via email in 1~3 business day valid,,1994-8-1
GB/T 15838-1995 Measuring methods for the performances of switching equipment clocks in digital synchronous network 190.0 via email in 1~3 business day abolished2009-04-01,2009-4-1,1996-6-1
GB/T 15838-2008 Test methods for the performances of switching equipment clocks in digital network 420.0 via email in 1~5 business day valid,,2009-4-1
GB/T 17154.1-1997 ISDN user-network interface layer 3 specification and testing method for basic call control Part 1: Layer 3 specification for basic call control 2025.0 via email in 1~3 business day valid,,1998-8-1
GB/T 17154.2-1997 ISDN user-network interface layer 3 specification and testing method for basic call control procedure Part 2: Testing method for layer 3 basic call control protocol 1830.0 via email in 1~3 business day valid,,1998-8-1
GB/T 3971.3-1983 The test methods for the technical specifications of multi-frequency register signaling for telephone automatic switching network 244.0 via email in 1~3 business day valid,,1984-10-1
GB/T 4573-1984 Measuring method for the relative power level over the analogue communication network 180.0 via email in 1~3 business day valid,,1985-4-1
GB/T 4574-1984 Measuring methods for actual circuit noise and the circuit noise in simulating system loading over the analogue communication network 340.0 via email in business day abolished2005-10-14 ,,1985-4-1
GB/T 5442-1985 The test methods for the technical specifications of inband pulsing single frequency line signalling system for automatic telephone switching network 120.0 via email in 1~3 business day valid,,1986-6-1
GB/T 5443-1985 The test methods for the technical specifications of ringing and tone for automatic telephone switching network 244.0 via email in 1~3 business day valid,,1986-6-1
GB/T 5444-1985 The test methods for the technical specifications of subscriber line signalling for automatic telephone switching network 244.0 via email in 1~3 business day valid,,1986-6-1
GB/T 7254-1995 Performance and test methods of the second order digital multiplex equipment operating at 8448 kbit/s and using positive justification 270.0 via email in 1~3 business day valid,,1995-1-2
GB/T 7609-1995 General test method for transmission performance of PCM voice channel in telecommunication network 210.0 via email in 1~3 business day valid,,1996-6-1
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DB31/T 1324-2021 5G network quality testing method based on user perception 
  Issued on: 2021-10-29   Price(USD): 495.0
GB 4572-1984 Measuring method for the channel attenuation distortion in the communication network 
  Issued on:   Price(USD): 180.0
GB 4575-1984 Frequency comparison pilot series for the FDM systems in the toll communication network 
  Issued on: 1984-07-17   Price(USD): 30.0
GB 7609-1987 Total distortion measuring method for PCM channel in the telecommunication network 
  Issued on:   Price(USD): 340.0
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   Price(USD): 270.0
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   Price(USD): 145.0
GB/T 14133-1993 The transmission performance objectives for mixed analogue-digital public telephone automatic switching network 
  Issued on: 1993-02-04   Price(USD): 250.0
GB/T 14760-1993 measurement methods of transmission performances on optical fiber cable communication systems 
  Issued on: 1993-1-2   Price(USD): 100.0
GB/T 15838-1995 Measuring methods for the performances of switching equipment clocks in digital synchronous network 
  Issued on: 1995-01-02   Price(USD): 190.0
GB/T 15838-2008 Test methods for the performances of switching equipment clocks in digital network 
  Issued on: 2008-10-07   Price(USD): 420.0
GB/T 17154.1-1997 ISDN user-network interface layer 3 specification and testing method for basic call control Part 1: Layer 3 specification for basic call control 
  Issued on: 1997-1-2   Price(USD): 2025.0
GB/T 17154.2-1997 ISDN user-network interface layer 3 specification and testing method for basic call control procedure Part 2: Testing method for layer 3 basic call control protocol 
  Issued on: 1997-1-2   Price(USD): 1830.0
GB/T 3971.3-1983 The test methods for the technical specifications of multi-frequency register signaling for telephone automatic switching network 
  Issued on: 1983-1-2   Price(USD): 244.0
GB/T 4573-1984 Measuring method for the relative power level over the analogue communication network 
  Issued on: 1984-07-01   Price(USD): 180.0
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   Price(USD): 340.0
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   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   Price(USD): 244.0
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   Price(USD): 244.0
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   Price(USD): 270.0
GB/T 7609-1995 General test method for transmission performance of PCM voice channel in telecommunication network 
  Issued on: 1995-01-02   Price(USD): 210.0
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