| Standard No. |
Title |
Price(USD) |
Delivery |
Status |
Add To Cart |
| GB/T 28506-2012 |
Technical specification for national No.7 signalling system—GSM mobile telephone user part (MTUP) |
 (USD) |
via email in
1-8 business day
|
VALID
|
|
| SL 417-2016 |
|
|
via email in
|
|
please email coc@codeofchina.com for quotation
|
| GB/T 28503-2012 |
Technical requirements of adaptation layer of No.7 signalling interworking with IP MTP2 user adaptation layer |
 (USD) |
via email in
1-8 business day
|
VALID
|
|
| GB/T 28502-2012 |
Technical requirement of interworking between No.7 signalling and IP |
 (USD) |
via email in
1-5 business day
|
VALID
|
|
| YD/T 1522.31-2009 |
Technical Requirements for Session Initiation Protocol Part 3 Interworking between ISUP and SIP-Supplement 1 |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| YD/T 1522.4-2009 |
Technical Requirements for Session Initiation Protocol Part 4 SIPs Applications about call control Based on Softswitch Network |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| YD/T 1127-2001 |
Technical Requiremnet of Interworking between No.7 Signalling and IP |
 (USD) |
via email in
1-5 business day
|
VALID
|
|
| YD/T 913-1997 |
Digital subscriber signalling system No.1(DSS1)－typical DSS1 service indicator codings for ISDN telecommunications services |
 (USD) |
via email in
1-8 business day
|
VALID
|
|
| YD/T 1296-2003 |
Technical specification for public IP voice switch |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| YD/T 887-1997 |
|
 (USD) |
via email in
1-3 business day
|
|
|
| YD/T 1663-2007 |
Testing Methods for Bearer Independent Call Control |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| YD/T 1309-2004 |
Bearer independent call bearer control specification |
 (USD) |
via email in
1-10 business day
|
VALID
|
|
| YDC 048-2007 |
Overall Technical Specification for ENUM |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB 3379-1982 |
Interoffice direct signalling system for telephone automatic switching network |
 (USD) |
via email in
1-3 business day
|
ABOLISHED
|
|
| GB/T 28500-2012 |
Technical requirements of 900/1 800 MHz TDMA digital cellular mobile network signaling system No.7 ISUP |
 (USD) |
via email in
1-10 business day
|
VALID
|
|
| YD/T 1304-2004 |
Test specification for national No.7 signalling system--Message Transfer Part (MTP)and Telephone User Part (TUP) |
 (USD) |
via email in
1-10 business day
|
VALID
|
|
| YD/T 1250-2003 |
Test method for access network——passive optical netwrok based on ATM (A-PON) |
 (USD) |
via email in
1-5 business day
|
VALID
|
|
| YD/T 1684-2007 |
Technical Requirements and Testing Methods for the Billing of the Digital Cellular Mobile Telecommunication Network Point to Point Short Message Service |
|
via email in
|
ABOLISHED
|
please email coc@codeofchina.com for quotation
|
| YD/T 1662-2007 |
Testing Methods for National No.7 Signalling System——GSM Mobile Telephone User Part (MTUP) |
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 28510-2012 |
Technical specification of stream control transmission protocol |
 (USD) |
via email in
1-8 business day
|
VALID
|
|
|
|
