| Standard No. |
Title |
Price(USD) |
Delivery |
Status |
Add to Cart |
| GB 2095-1980 |
Electromechanical components for telephone switching system--Graphical symbols for operation sequence diagram |
$180.00 |
via email in 1~3 business day |
valid,,1981-7-1 |
|
| GB 3267-1982 |
The specification and test methods for conference telephone tandem board |
$340.00 |
via email in 1~3 business day |
superseded,1900-1-1,1983-5-1 |
|
| GB 3268-1982 |
The specification and test methods for conference telephone SET |
$180.00 |
via email in 1~3 business day |
superseded,1900-1-1,1983-5-1 |
|
| GB 5322-1985 |
Technical requirements and testing methods for crossbar private automatic branch exchange |
$105.00 |
via email in 1~3 business day |
valid,,1986-4-1 |
|
| GB 6878-1986 |
Technical requirements and testing methods for local crossbar telephone switching systems |
$180.00 |
via email in 1~3 business day |
valid,,1987-10-1 |
|
| GB 6879-1986 |
Specifications of 30 channels pulse code modulation multiplex equipment at 2048 kbit/s |
$1304.00 |
via email in 1~5 business day |
superseded,1996-8-1,1987-10-1 |
|
| GB 6880-1986 |
Measuring methods of 30 channels pulse code modulation multiplex equipment at 2048 kbit/s |
$250.00 |
via email in 1~3 business day |
superseded,1996-8-1,1987-10-1 |
|
| GB/T 13994-1992 |
requirements for a 60 - Channel PCM/ADPCM transcoder equipment |
$600.00 |
via email in 1~3 business day |
abolished2017-12-15,,1993-8-1 |
|
| GB/T 13995-1992 |
requirements for TDM/FDM 60 - Channel transmultiplexing equipment |
$370.00 |
via email in 1~3 business day |
abolished2017-12-15,,1993-8-1 |
|
| GB/T 14130-1993 |
requirements for digital sections of metallic cables used in telecommunication network |
$150.00 |
via email in 1~3 business day |
abolished2017-12-15,,1993-8-1 |
|
| 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 |
abolished2017-12-15,,1993-8-1 |
|
| 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 |
abolished2017-12-15,,1993-8-1 |
|
| GB/T 1492-1979 |
Method of test for telephones |
$220.00 |
via email in 1~3 business day |
valid,,1979-8-1 |
|
| GB/T 1493-1979 |
Technical requirements for common battery telephones and automatic telephones |
$300.00 |
via email in 1~3 business day |
abolished2005-10-14,,1979-8-1 |
|
| GB/T 1494-1979 |
Technical requirements for magnet/telephone |
$260.00 |
via email in 1~3 business day |
abolished2005-10-14 ,,1979-8-1 |
|
| GB/T 2094-1980 |
Toll and local crossbar telephone switching system--Signal marks or colours of lamp and alarm ringer |
$180.00 |
via email in 1~3 business day |
valid,,1981-7-1 |
|
| GB/T 5581-1985 |
Specification and measuring method of frequency-modulated voice-frequency telegraph set for a modulation rate of 75 Bauds with channels spaced at 180 Hz |
$260.00 |
via email in 1~3 business day |
abolished2005-10-14 ,,1986-7-1 |
|
| HB 6096-1986 |
SZ-01 Digital Information Transmission System |
$1665.00 |
via email in 1~10 business day |
valid,,1987-1-1 |
|
| YD 284-1982 |
Technical specification of 2048 kbit/s regenerative repeater |
$240.00 |
via email in 1~3 business day |
superseded,1995-9-1,1983-1-1 |
|
| YD 285-1982 |
Technical specification for 2048kbit/s line terminal equipment |
$240.00 |
via email in 1~3 business day |
valid,,1983-1-1 |
|
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