2025-12-6 10.1.6.65
Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
Position: Search valid to be valid superseded to be superseded abolished to be abolished
Standard No. Title Price(USD) Delivery Status Add to Cart
YD/T 4163-2022 Technical Requirements for Non-Telecom Operators to Support Number Portability 195.0 via email in 1~3 business day valid,,2023-1-1
YD/T 4161-2022 User Interface and Procedure Requirements for Number Portability 300.0 via email in 1~5 business day valid,,2023-1-1
YD/T 4158-2022 Technical requirements of network interworking for number portability 330.0 via email in 1~5 business day valid,,2023-1-1
SL 417-2016 300.0 via email in 1~3 business day valid,,2016-10-22
GB/T 14733.4-2012 Terminology for telecommunication switching and signalling in telecommunication 870.0 via email in 1~3 business day valid,,2013-2-1
GB/T 28510-2012 Technical specification of stream control transmission protocol 990.0 via email in 1~3 business day valid,,2012-10-1
GB/T 28503-2012 Technical requirements of adaptation layer of No.7 signalling interworking with IP MTP2 user adaptation layer 810.0 via email in 1~3 business day valid,,2012-10-1
GB/T 28502-2012 Technical requirement of interworking between No.7 signalling and IP 600.0 via email in 1~3 business day valid,,2012-10-1
GB/T 28500-2012 Technical requirements of 900/1 800 MHz TDMA digital cellular mobile network signaling system No.7 ISUP 1740.0 via email in 1~3 business day valid,,2012-10-1
GB/T 28505-2012 Technical specification of national No.7 signalling system 2 Mbit/s high speed link 330.0 via email in 1~3 business day valid,,2012-10-1
GB/T 28524-2012 Media Gateway Control Protocol(MGCP) 1260.0 via email in 1~5 business day valid,,2012-10-1
GB/T 28506-2012 Technical specification for national No.7 signalling system—GSM mobile telephone user part (MTUP) 990.0 via email in 1~3 business day valid,,2012-10-1
YD/T 1936-2009 Technical Requirements for Session Description Protocol 480.0 via email in 1~3 business day valid,,2009-9-1
YD/T 1522.31-2009 Technical Requirements for Session Initiation Protocol Part 3 Interworking between ISUP and SIP-Supplement 1 180.0 via email in 1~3 business day valid,,2009-9-1
YD/T 1918-2009 Test Methods for the Adaptation Layer of ISDN Signalling Interworking with IP 750.0 via email in 1~3 business day valid,,2009-9-1
YD/T 1919-2009 Test Methods for V5.2 User Adaptation Layer 180.0 via email in 1~3 business day valid,,2009-9-1
YD/T 1938.2-2009 Test method for Session Initiation Protocol (SIP) Part 2:SIPs Applications about Call Control Basedon Softswitch Network 780.0 via email in 1~3 business day valid,,2009-9-1
YD/T 1938.1-2009 Test method for Session Initiation Protocol (SIP) Part 1：Basic Session Initiation Protocol 4470.0 via email in 1~3 business day valid,,2009-9-1
YD/T 1522.4-2009 Technical Requirements for Session Initiation Protocol Part 4 SIPs Applications about call control Based on Softswitch Network 340.0 via email in 1~3 business day valid,,2009-9-1
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 270.0 via email in 1~3 business day superseded,2015-7-14,2008-1-1
Previous Page     Next Page



Code of China
Search

YD/T 4163-2022 Technical Requirements for Non-Telecom Operators to Support Number Portability 
  Issued on: 2022-9-30   Price(USD): 195.0
YD/T 4161-2022 User Interface and Procedure Requirements for Number Portability 
  Issued on: 2022-9-30   Price(USD): 300.0
YD/T 4158-2022 Technical requirements of network interworking for number portability 
  Issued on: 2022-9-30   Price(USD): 330.0
SL 417-2016  
  Issued on: 2016-07-22   Price(USD): 300.0
GB/T 14733.4-2012 Terminology for telecommunication switching and signalling in telecommunication 
  Issued on: 2012-11-5   Price(USD): 870.0
GB/T 28510-2012 Technical specification of stream control transmission protocol 
  Issued on: 2012-6-29   Price(USD): 990.0
GB/T 28503-2012 Technical requirements of adaptation layer of No.7 signalling interworking with IP MTP2 user adaptation layer 
  Issued on: 2012-6-29   Price(USD): 810.0
GB/T 28502-2012 Technical requirement of interworking between No.7 signalling and IP 
  Issued on: 2012-6-29   Price(USD): 600.0
GB/T 28500-2012 Technical requirements of 900/1 800 MHz TDMA digital cellular mobile network signaling system No.7 ISUP 
  Issued on: 2012-6-29   Price(USD): 1740.0
GB/T 28505-2012 Technical specification of national No.7 signalling system 2 Mbit/s high speed link 
  Issued on: 2012-6-29   Price(USD): 330.0
GB/T 28524-2012 Media Gateway Control Protocol(MGCP) 
  Issued on: 2012-6-29   Price(USD): 1260.0
GB/T 28506-2012 Technical specification for national No.7 signalling system—GSM mobile telephone user part (MTUP) 
  Issued on: 2012-6-29   Price(USD): 990.0
YD/T 1936-2009 Technical Requirements for Session Description Protocol 
  Issued on: 2009-6-15   Price(USD): 480.0
YD/T 1522.31-2009 Technical Requirements for Session Initiation Protocol Part 3 Interworking between ISUP and SIP-Supplement 1 
  Issued on: 2009-6-15   Price(USD): 180.0
YD/T 1918-2009 Test Methods for the Adaptation Layer of ISDN Signalling Interworking with IP 
  Issued on: 2009-6-15   Price(USD): 750.0
YD/T 1919-2009 Test Methods for V5.2 User Adaptation Layer 
  Issued on: 2009-6-15   Price(USD): 180.0
YD/T 1938.2-2009 Test method for Session Initiation Protocol (SIP) Part 2:SIPs Applications about Call Control Basedon Softswitch Network 
  Issued on: 2009-6-15   Price(USD): 780.0
YD/T 1938.1-2009 Test method for Session Initiation Protocol (SIP) Part 1：Basic Session Initiation Protocol 
  Issued on: 2009-6-15   Price(USD): 4470.0
YD/T 1522.4-2009 Technical Requirements for Session Initiation Protocol Part 4 SIPs Applications about call control Based on Softswitch Network 
  Issued on: 2009-6-15   Price(USD): 340.0
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 
  Issued on: 2007-9-29   Price(USD): 270.0
About Us   |    Contact Us   |    Terms of Service   |    Privacy   |    Cancellation & Refund Policy   |    Payment
Tel: +86-10-8572 5655 | Fax: +86-10-8581 9515 | Email: coc@codeofchina.com | QQ: 672269886
Copyright: Beijing COC Tech Co., Ltd. 2008-2040