2025-12-5 216.73.216.21
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Position: Search valid to be valid superseded to be superseded abolished to be abolished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
YD/T 1309-2004 Bearer independent call bearer control specification 1500.0 via email in 1~3 business day valid,,2004-2-9
YD/T 1304-2004 Test specification for national No.7 signalling system - Message Transfer Part (MTP)and Telephone User Part (TUP) 4350.0 via email in 1~3 business day valid,,2004-2-9
YD/T 913-1997 Digital subscriber signalling system No.1(DSS1)－typical DSS1 service indicator codings for ISDN telecommunications services 630.0 via email in 1~3 business day valid,,1998-1-1
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 1296-2003 Technical specification for public IP voice switch 390.0 via email in 1~3 business day valid,,2003-12-30
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
GB 3379-1982 Interoffice direct signalling system for telephone automatic switching network 570.0 via email in 1~5 business day abolished2005-10-14 ,,1983-10-1
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 1193.1-2002 Bearer independent call control specification-Part 1:functional of BICC 160.0 via email in 1~3 business day valid,,2002-6-1
YD/T 887-1997 Regulations for session initiation period of data transmission over public telephone network 130.0 via email in 1~3 business day abolished2009-12-01,,1997-7-1
YD/T 1663-2007 Testing Methods for Bearer Independent Call Control 1020.0 via email in 1~3 business day valid,,2007-12-1
YD/T 958-1998 Digital subscriber signalling system No.1(DSS1)-signalling specification for frame mode basic call control 910.0 via email in 1~5 business day valid,,1998-9-1
YD/T 1239-2002 Access Network Technical Specifications-Very-high-speed Digital Subscriber Line 2250.0 via email in 1~5 business day valid,,2002-11-8
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
YDC 048-2007 Overall Technical Specification for ENUM 750.0 via email in 1~3 business day valid,,2007-3-16
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
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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
YD/T 1309-2004 Bearer independent call bearer control specification 
  Issued on: 2004-2-9   Price(USD): 1500.0
YD/T 1304-2004 Test specification for national No.7 signalling system - Message Transfer Part (MTP)and Telephone User Part (TUP) 
  Issued on: 2004-2-9   Price(USD): 4350.0
YD/T 913-1997 Digital subscriber signalling system No.1(DSS1)－typical DSS1 service indicator codings for ISDN telecommunications services 
  Issued on: 1997-12-2   Price(USD): 630.0
YD/T 1936-2009 Technical Requirements for Session Description Protocol 
  Issued on: 2009-6-15   Price(USD): 480.0
YD/T 1296-2003 Technical specification for public IP voice switch 
  Issued on: 2003-12-30   Price(USD): 390.0
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
GB 3379-1982 Interoffice direct signalling system for telephone automatic switching network 
  Issued on: 1982-01-02   Price(USD): 570.0
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 1193.1-2002 Bearer independent call control specification-Part 1:functional of BICC 
  Issued on: 2002-06-21   Price(USD): 160.0
YD/T 887-1997 Regulations for session initiation period of data transmission over public telephone network 
  Issued on: 1997-02-28   Price(USD): 130.0
YD/T 1663-2007 Testing Methods for Bearer Independent Call Control 
  Issued on: 2007-7-20   Price(USD): 1020.0
YD/T 958-1998 Digital subscriber signalling system No.1(DSS1)-signalling specification for frame mode basic call control 
  Issued on: 1998-08-07   Price(USD): 910.0
YD/T 1239-2002 Access Network Technical Specifications-Very-high-speed Digital Subscriber Line 
  Issued on: 2002-11-08   Price(USD): 2250.0
YD/T 1919-2009 Test Methods for V5.2 User Adaptation Layer 
  Issued on: 2009-6-15   Price(USD): 180.0
YDC 048-2007 Overall Technical Specification for ENUM 
  Issued on: 2007-3-16   Price(USD): 750.0
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
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