| Standard No. |
Title |
Price(USD) |
Delivery |
Status |
Add to Cart |
| DB31/T 1324-2021 |
5G network quality testing method based on user perception |
$495.00 |
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 |
$180.00 |
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superseded,1996-6-1,1985-4-1 |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 |
$30.00 |
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 |
$340.00 |
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superseded,, |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 |
$270.00 |
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 |
$145.00 |
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 |
$250.00 |
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 |
$100.00 |
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 |
$190.00 |
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 |
$420.00 |
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 |
$2025.00 |
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 |
$1830.00 |
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 |
$244.00 |
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 |
$180.00 |
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 |
$340.00 |
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 |
$120.00 |
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 |
$244.00 |
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 |
$244.00 |
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 |
$270.00 |
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 |
$210.00 |
via email in 1~3 business day |
valid,,1996-6-1 |
|
* Related standard quantity: * Page quantity: *
Current: * First
Previous
[1][2][3][4][5]
Next
End
* Related standard quantity: * Page quantity: *
Current: * First
Previous
[1][2][3][4][5]
Next
End
|
