Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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TZ 017-1994 2595.0 via email in 1~10 business day valid
YDN 077-1997 Technical System of China Public Multimedia Communications Network 600.0 via email in 1~3 business day valid
YD/T 1226-2002 Intelligent network Capabillity Set two (CS-2) Intelligent Network Application Protocol (INAP) 4950.0 via email in 1~3 business day valid
YD/T 1584.4-2007 Technical Specification for 2GHz Digital Cellular Mobile Communications Network Management General Part 4 CORBA based Interface Design 1860.0 via email in 1~3 business day valid
YD/T 1543.1-2007 Technical Specification for 2GHz WCDMA Digital Cellular Mobile Communication Network Iu Interface (Phase Ⅰ)Part 1:General 234.0 via email in 1~3 business day valid
YDC 043.14-2006 Technical Requirements of Wireless Application Protocol (WAP) Part 14 Wireless Telephony Application Interface 1020.0 via email in 1~10 business day valid
YDN 027-1997 Technical Requirements for SDH Transmission Network - Ring Network (Tentative Specifications) 570.0 via email in 1~3 business day valid
GB/T 7262.2-2001 Technical requirements and arrangement of equipment for highway communication--Arrangement of equipment 150.0 via email in 1~3 business day abolished
YD/T 852-1996 General Design Principles of Telecommunication Management Network (TMN) 180.0 via email in 1~3 business day valid
YD/T 1522.1-2006 Technical Requirements for Session Initiation Protocol Part 1:Basic Session Initiation Protocol 2070.0 via email in 1~3 business day valid
YD/T 1543.2-2007 Technical Specification for 2GHz WCDMA Digital Cellular Mobile Communication Network Iu Interface (Phase Ⅰ)Part 2: Layer 1 104.0 via email in 1~3 business day valid
SJ 20851-2002 General specification for the key management center in the military digital secure automatic telephone network 270.0 via email in 1~3 business day valid
YDN 043-1997 Technical Specification for No. 7 ISUP Signaling of Digital Cellular Telecommunication Network 840.0 via email in 1~3 business day valid
YD/T 1767.1-2008 Technical Requirements for Automatically Switched Optical Network Management Part 1:Basic Principle 150.0 via email in 1~3 business day valid
YD/T 1543.5-2007 Technical Specification for 2GHz WCDMA Digital Cellular Mobile Communication Network Iu Interface (Phase Ⅰ)Part 5:Data Transport&Transport Signaling 134.0 via email in 1~3 business day valid
TZ 018-1994 990.0 via email in 1~10 business day valid
YD/T 1252-2003 The technical requirements of intelligent network quipment - Integrated Service Control Point (ISCP) 285.0 via email in 1~3 business day valid
YD/T 1767.3-2009 Technical Requirements for Automatically Switched Optical Network (ASON) Management Part 3: EMS-NMS Interface Function 405.0 via email in 1~3 business day valid
YD/T 1289.1-2003 Synchronous Digital Hierarchy(SDH)transport network management system technical specification part 1:basic principle 120.0 via email in 1~3 business day valid
YD/T 1289.6-2009 Technical specification for SDH transport network management system part VI:EMS-NMS interface information model based on IDL/IIOP 2250.0 via email in 1~3 business day valid
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