| Standard No. |
Title |
Price(USD) |
Delivery |
Status |
Add To Cart |
| SL 417-2007 |
Automatic telephone number for telephone network of water resources |
|
via email in
|
ABOLISHED
|
please email coc@codeofchina.com for quotation
|
| YD/T 1936-2009 |
Technical Requirements for Session Description Protocol |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 5442-1985 |
The test methods for the technical specifications of inband pulsing single frequency line signalling system for automatic telephone switching network |
 (USD) |
via email in
1-3 business day
|
|
|
| GB/T 9540-1988 |
Wideband modem for synchronous data transmission at a data signalling rate higher than 72 kbit/s using 60～108kHz group band circuits |
|
via email in
|
ABOLISHED
|
please email coc@codeofchina.com for quotation
|
| YD/T 1919-2009 |
Test Methods for V5.2 User Adaptation Layer |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| YD/T 2042-2009 |
IPv6 network equipment security requirements——Ethernet switch with routing capability |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| YD/T 1918-2009 |
Test Methods for the Adaptation Layer of ISDN Signalling Interworking with IP |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 15838-2008 |
Test methods for the performances of switching equipment clocks in digital network |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GA 330-2001 |
Transmission technology protocol of alarm for 351 MHz |
 (USD) |
via email in
1-3 business day
|
|
|
| GB/T 28524-2012 |
Media Gateway Control Protocol(MGCP) |
 (USD) |
via email in
1-10 business day
|
VALID
|
|
| GB 3377-1982 |
Multi frequency register signalling system for telephone antomatic switching network |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB 3971.2-1983 |
Interoffice junction digital line signalling system for telephone automatic switching network |
|
via email in
1-3 business day
|
|
please email coc@codeofchina.com for quotation
|
| YD/T 1938.2-2009 |
Test method for Session Initiation Protocol (SIP) Part 2:SIPs Applications about Call Control Basedon Softswitch Network |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| YD/T 1255-2003 |
Technical Specification for Ethernet Switch with Routing Capability |
 (USD) |
via email in
1-5 business day
|
ABOLISHED
|
|
| GB/T 28505-2012 |
Technical specification of national No.7 signalling system 2 Mbit/s high speed link |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB/T 5444-1985 |
The test methods for the technical specifications of subscriber line signalling for automatic telephone switching network |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| GB 3376-1982 |
Inband pulsing single frequency line signalling system for telephone automatic switching network |
|
via email in
1-3 business day
|
|
please email coc@codeofchina.com for quotation
|
| YD/T 1938.1-2009 |
Test method for Session Initiation Protocol (SIP) Part 1：Basic Session Initiation Protocol |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 15409-1994 |
Frame structure for synchronous digital hierarchy signal |
|
via email in
1-3 business day
|
ABOLISHED
|
please email coc@codeofchina.com for quotation
|
| GB 3378-1982 |
Subscriber line signalling system for telephone automatic switching network |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
|
|
