| Standard No. |
Title |
Price(USD) |
Delivery |
Status |
Add To Cart |
| GB/T 1492-1979 |
Method of test for telephones |
 (USD) |
via email in
1-3 business day
|
ABOLISHED
|
|
| YD 610-1993 |
|
 (USD) |
via email in
1-8 business day
|
|
|
| GB 6878-1986 |
Technical requirements and testing methods for local crossbar telephone switching systems |
 (USD) |
via email in
1-3 business day
|
ABOLISHED
|
|
| YD/T 748-1995 |
|
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| 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 |
 (USD) |
via email in
1 business day
|
ABOLISHED
|
|
| GB 6880-1986 |
|
 (USD) |
via email in
1-3 business day
|
ABOLISHED
|
|
| YD/T 795-1996 |
|
 (USD) |
via email in
1 business day
|
ABOLISHED
|
|
| GB 3267-1982 |
The specification and test methods for conference telephone tandem board |
 (USD) |
via email in
1-3 business day
|
ABOLISHED
|
|
| YD/T 922-1997 |
Performance and test methods of the inegrated multiplex equipment using in the digital channel |
 (USD) |
via email in
1 business day
|
VALID
|
|
| YD/T 1136-2001 |
Technical requirements and testing methods of basic access terminal adapter(TA)of integrated sevices digital network (ISDN) |
 (USD) |
via email in
1-8 business day
|
VALID
|
|
| YD 336-1988 |
Digital Line Signalling for Manual Toll Exchange to local Exchange |
 (USD) |
via email in
1 business day
|
VALID
|
|
| YD/T 1018-1999 |
Digital circuit multiplication equipment using ADPCM and DSI |
 (USD) |
via email in
1-8 business day
|
VALID
|
|
| GB/T 14130-1993 |
Performance requirements for digital sections of metallic cables used in telecommunication network |
|
via email in
1-3 business day
|
|
please email coc@codeofchina.com for quotation
|
| GB/T 1493-1979 |
Technical requirements for common battery telephones and automatic telephones |
 (USD) |
via email in
1-3 business day
|
ABOLISHED
|
|
| YD/T 974-1998 |
Specifications and Measurement Methods for SDH Digital Cross Connect Equipment(SDXC) |
 (USD) |
via email in
1-10 business day
|
VALID
|
|
| YD/T 989-1998 |
The Technical Requirement of Flexible Multiplexer |
 (USD) |
via email in
1 business day
|
ABOLISHED
|
|
| YD/T 631-1993 |
|
 (USD) |
via email in
1-3 business day
|
|
|
| YD/T 743-1995 |
|
 (USD) |
via email in
1-3 business day
|
|
|
| GB/T 13994-1992 |
Technical requirements for a 60-channel PCM/ADPCM transcoder equipment |
|
via email in
1-3 business day
|
|
please email coc@codeofchina.com for quotation
|
| SJ 20981-2008 |
|
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
|
|
