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YD/T 1552-2007 Technical Specification for 2GHz WCDMA Digital Cellular Mobile Communication Network RAN Equipment (Phase Ⅰ) via email in ABOLISHED please email coc@codeofchina.com for quotation
YD/T 1411-2007 Testing Methods of 2GHz TD-SCDMA/WCDMA Digital Cellular Mobile Communication Network Core Network Equipment (Phase Ⅰ) via email in VALID please email coc@codeofchina.com for quotation
YD/T 1878.3-2009 800MHz/2GHz cdma2000 Digital Cell Mobile Communications Network (HRPD) Network Management Technical Specification Part 3:Network Resource Model Design based CORBA via email in VALID please email coc@codeofchina.com for quotation
YD/T 941-1997 ISDN user-network interface supplementay service comformance testing specification (USD) via email in 1 business day VALID
YD/T 521-1992 (USD) via email in 1-3 business day VALID
YD/T 1878.2-2009 800MHz/2GHz cdma2000 Digital Cell Mobile Communications Network (HRPD)Network Management Technical Specification Part 2:Performance Network Resource Model via email in VALID please email coc@codeofchina.com for quotation
YD/T 1550.4-2007 Technical Specification for 2GHz WCDMA Digital Cellular Mobile Communication Network Iub Interface(Phase I)Part 4:NBAP via email in VALID please email coc@codeofchina.com for quotation
GB/T 3971.3-1983 The test methods for the technical specifications of multi-frequency register signaling for telephone automatic switching network (USD) via email in 1-3 business day VALID
YDN 026-1997 Technical Requirements for SDH Transmission Network - Input Business and Maintainability Limit Value of SDH Digital Channel and Reuse Section (USD) via email in 1 business day VALID
GB/T 15838-2008 Test methods for the performances of switching equipment clocks in digital network (USD) via email in 1-3 business day VALID
YD/T 1571-2007 2GHz cdma2000 Digital Cellular Mobile Communication Network Test Method:Mobile Application Part (MAP) via email in VALID please email coc@codeofchina.com for quotation
YD/T 1545.1-2007 Technical Specification for Uu Interface of 2GHz WCDMA Digital Cellular Mobile Communication Network Layer 2 (Phase Ⅰ) Part :MAC via email in VALID please email coc@codeofchina.com for quotation
YD/T 1550.6-2007 Technical Specification for 2GHz WCDMA Digital Cellular Mobile Communication Network Iub Interface(Phase I)Part 6:User Plane Protocols for Common Transport Channel Data Stream via email in VALID please email coc@codeofchina.com for quotation
GB/T 7609-1995 General test method for transmission performance of PCM voice channel in telecommunication network via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 17154.1-1997 ISDN user-network interface layer 3 specification and testing method for basic call control Part 1: Layer 3 specification for basic call control via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YD/T 1878.1-2009 800MHz/2GHz cdma2000 Digital Cell Mobile Communications Network (HRPD) Network Management Technical Specification Part 1:Configuration Network Resource Model via email in VALID please email coc@codeofchina.com for quotation
YD/T 1413-2007 Testing Methods for GPRS Tunnelling Protocol of TD-SCDMA/WCDMA Digital Cellular Mobile Communication Network (Phase Ⅰ) via email in VALID please email coc@codeofchina.com for quotation
GB/T 17154.2-1997 ISDN user-network interface layer 3 specification and testing method for basic call control procedure Part 2: Testing method for layer 3 basic call control protocol via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YD/T 1062-2000 Switch ISDN user interface on line monitor function (USD) via email in 1-3 business day VALID
YD/T 1580-2007 Technical Specification for 2GHz cdma2000 Digital Cellular Mobile Communication Networks:Physical Layer of Air Interface via email in VALID please email coc@codeofchina.com for quotation
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