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YD/T 1544.2-2007 Technical Specification for Uu Interface of 2GHz WCDMA Digital Cellular Mobile Communication Network Physical Layer Part 2:Physical Channels and Mapping of Transport Channels Onto Physical Channels via email in VALID please email coc@codeofchina.com for quotation
TZ 020-1995 1110 (USD) via email in 1-8 business day VALID
YDN 061-1997 1275 (USD) via email in 1-10 business day VALID
TZ 005-1994 2760 (USD) via email in 1-10 business day ABOLISHED
YD/T 1928.1-2009 Softswitch Network Management System Technical Specification Part 1:General Technical Requirements via email in VALID please email coc@codeofchina.com for quotation
YD/T 1767.4-2009 Technical Requirements for Automatically Switched Optical Network (ASON) Management Part 4: EMS-NMS Interface Common Information Model via email in VALID please email coc@codeofchina.com for quotation
GB/Z 20177.4-2006 Control network LONWORKS technology specificationPart 4: Tunneling component network protocols over internet protocol channels via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YD/T 1586.2-2007 Technical Specification for 2GHz WCDMA Digital Cellular Mobile Communication Network Management(Phase Ⅰ)Part 2 Performance Network Resource Model via email in VALID please email coc@codeofchina.com for quotation
YD/T 1522.2-2006 Technical Requirements for Session Initiation Protocol Part 2:Applications about call control based on SIP 750 (USD) via email in 1-5 business day VALID
GF 011-1995 1590 (USD) via email in 1-10 business day VALID
YD/T 1535-2006 Technical Requirements of Equipment Security for PSTN-Calling Number Information 270 (USD) via email in 1-3 business day VALID
YDN 122-1999 240 (USD) via email in 1-3 business day
GB 7283-1987 225 (USD) via email in 1-3 business day ABOLISHED
YD/T 1736-2009 Security protection requirements for internet via email in VALID please email coc@codeofchina.com for quotation
TZ 015-1994 3885 (USD) via email in 1-10 business day
GB/T 29228-2012 Technical requirements for public telecommunication network equipments security—Calling party number information 240 (USD) via email in 1-3 business day VALID
GF 010-1995 2010 (USD) via email in 1-10 business day VALID
YDN 072-1997 1545 (USD) via email in 1-10 business day VALID
YD/T 1587.1-2007 Technical Specification for 2GHz cdma2000 Digital Cell Mobile Communication Network Management (Phase Ⅰ)Part 1 Configuration Network Resource Model via email in VALID please email coc@codeofchina.com for quotation
YD/T 1611.1-2007 Technical Requirements for Management Interface of IP Network Part 1:General Principles via email in VALID please email coc@codeofchina.com for quotation
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