2025-12-13 10.2.82.121
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Code of China
Chinese National Standard List: Communication network number, signal and connection

YD/T 4163-2022 Technical Requirements for Non-Telecom Operators to Support Number Portability 
  Issued on: 2022-9-30   Translation Price(USD): 195.0
YD/T 4161-2022 User Interface and Procedure Requirements for Number Portability 
  Issued on: 2022-9-30   Translation Price(USD): 300.0
YD/T 4158-2022 Technical requirements of network interworking for number portability 
  Issued on: 2022-9-30   Translation Price(USD): 330.0
YD/T 1309-2004 Bearer independent call bearer control specification 
  Issued on: 2004-2-9   Translation 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   Translation 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   Translation Price(USD): 630.0
YD/T 1936-2009 Technical Requirements for Session Description Protocol 
  Issued on: 2009-6-15   Translation Price(USD): 480.0
YD/T 1296-2003 Technical specification for public IP voice switch 
  Issued on: 2003-12-30   Translation 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   Translation Price(USD): 180.0
GB 3379-1982 Interoffice direct signalling system for telephone automatic switching network 
  Issued on: 1982-01-02   Translation 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   Translation Price(USD): 750.0
YD/T 1193.1-2002 Bearer independent call control specification-Part 1:functional of BICC 
  Issued on: 2002-06-21   Translation 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   Translation Price(USD): 130.0
YD/T 1663-2007 Testing Methods for Bearer Independent Call Control 
  Issued on: 2007-7-20   Translation 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   Translation Price(USD): 910.0
YD/T 1239-2002 Access Network Technical Specifications-Very-high-speed Digital Subscriber Line 
  Issued on: 2002-11-08   Translation Price(USD): 2250.0
YD/T 1919-2009 Test Methods for V5.2 User Adaptation Layer 
  Issued on: 2009-6-15   Translation Price(USD): 180.0
YDC 048-2007 Overall Technical Specification for ENUM 
  Issued on: 2007-3-16   Translation Price(USD): 750.0
GB/T 14733.4-2012 Terminology for telecommunication switching and signalling in telecommunication 
  Issued on: 2012-11-5   Translation Price(USD): 870.0
GB/T 28510-2012 Technical specification of stream control transmission protocol 
  Issued on: 2012-6-29   Translation Price(USD): 990.0
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