| Standard No. |
Title |
Price(USD) |
Delivery |
Status |
Add To Cart |
| YD/T 1992-2009 |
Test specifications for SDH-based multi-service transport platform (MSTP) － Interoperability |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 32657.2-2016 |
|
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| JT/T 627-2005 |
Technical requirements of VHF marine data communication system for inland waterway |
105 (USD) |
via email in
1-3 business day
|
|
|
| GB/T 5438-1985 |
Characteristics and measuring methods for monophonic and stereophonic transmissions |
210 (USD) |
via email in
1-3 business day
|
VALID
|
|
| YD/T 1634-2007 |
Optical Transport Network Physical Layer Interfaces |
|
via email in
|
ABOLISHED
|
please email coc@codeofchina.com for quotation
|
| GB/T 2789-1981 |
Technical requirements for network interface for the analogue microwave relay communication systems |
|
via email in
1-3 business day
|
|
please email coc@codeofchina.com for quotation
|
| YD/T 1744-2009 |
Security protection requirements for transport network |
345 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB/T 13169-1991 |
General specification for 4MHz (960ch) carrier systems on standardized 1.2/4.4mm coaxial cable pairs |
150 (USD) |
via email in
1-3 business day
|
|
|
| GB/T 21645.6-2009 |
Technical requirements for automatically switched optical network—Part 6:Management plane |
360 (USD) |
via email in
1-3 business day
|
VALID
|
|
| YD/T 1948.2-2009 |
Technical Requirement of Ethernet over Transport Part 2:Ethernet UNI and Ethernet NNI |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| YD/T 1958-2009 |
Technical Requirements for PDH Virtual Concatenation and GFP Mapping |
210 (USD) |
via email in
1-3 business day
|
VALID
|
|
| YD/T 1957.1-2009 |
Technical Requirements for Automatically Switched Optical Network (ASON) Node Part 1:Technical Requirements for SDH-based ASON Node |
|
via email in
|
|
please email coc@codeofchina.com for quotation
|
| GB/T 20185-2006 |
Optical interface requirements for equipments and systems relating to the synchronous digital hierarchy |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| T/ITS 0029-2015 |
The integrated technical requirements for the information system of urban public transit supervision |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 4110-1983 |
Pulse code modulation communication system hierarchy |
75 (USD) |
via email in
1-3 business day
|
VALID
|
|
| MT/T 1007-2006 |
Information transmission interface for coal mine |
225 (USD) |
via email in
1-3 business day
|
VALID
|
|
| YD/T 744-2009 |
Technical requirements and test methods for digital microwave telecommunication equipments（systems）of plesiochronous digital hierarchy （PDH） |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| YD/T 1266-2003 |
Test methods of protection schemes for SDH rings |
765 (USD) |
via email in
1-8 business day
|
VALID
|
|
| GB/T 3383-1982 |
Telecommunication transmission unit; Decibel |
30 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB/T 17904.1-1999 |
ISDN user-network interface data link layer specification and conformance testing method Part 1:User-network interface data link layer specification |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
|
|
