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YD/T 1762.1-2008 TD-SCDMA/WCDMA Digital Cellular Mobile Communication Network Technical Specification for USIM-ME (Cu)Interface Part 1:Physical Electrical and Logical Characteristics via email in ABOLISHED please email coc@codeofchina.com for quotation
YD/T 1847.4-2009 Technical Requirement for Iub interface of 2GHz TD-SCDMA Digital Cellular Mobile Communication network HSUPA Part 4: NBAP signalling via email in ABOLISHED please email coc@codeofchina.com for quotation
YD/T 1428.1-2005 Testing methods for 900/1800MHz TDMA digital cellular mobile Communication network CAMEL Application Part(CAP)(CAMEL 3) Part 1-SSP SMS (USD) via email in 1-10 business day VALID
YD/T 1846.2-2009 Technical Requirement for HSUPA Uu Interface Layer 2 in 2GHz TD-SCDMA Digital Cellular Mobile Telecommunication Network Part 2:RLC Protocol via email in VALID please email coc@codeofchina.com for quotation
YD/T 2644-2013 Technical requirements for transport over TCP in domain name registration (USD) via email in 1 business day VALID
YD/T 1970.6-2009 Maintenance Requirements of Power Supply for Telecommunication Stations/Sites Part 6:Generator sets System (USD) via email in 1-3 business day VALID
YD/T 1157.3-2005 The requirements for sending calling party number between networks (Supplementary Ⅲ) (USD) via email in 1-3 business day VALID
YD/T 667-1994 Quality grading criteria of 7GHz digital microwave transceiver (USD) via email in 1 business day ABOLISHED
YD/T 615-1993 (USD) via email in 1-3 business day ABOLISHED
YD/T 1375-2007 Testing Methods for 2GHz TD-SCDMA/WCDMA Digital Cellular Mobile Communication Network Iu Interface (Phase Ⅰ) via email in ABOLISHED please email coc@codeofchina.com for quotation
YD/T 2702-2014 via email in VALID please email coc@codeofchina.com for quotation
YDN 001-1996 (USD) via email in 1-5 business day VALID
YD/T 1869-2009 Testing Method for 800MHz/2GHz cdma2000 Digital Cellular Mobile Communication Network Packet Data Prepaid via email in VALID please email coc@codeofchina.com for quotation
YD/T 644-1993 Sophisticated method of complete communication equipment (USD) via email in 1 business day ABOLISHED
YD 5091-2005 Specification for Seismic Test of Optical Transmissions Equipment (USD) via email in 1-3 business day ABOLISHED
YD/T 2645-2013 Technical requirements for supporting Chinese e-mail of POP3 (USD) via email in 1 business day VALID
YD/T 1335-2005 800MHz CDMA digital cellular mobile telecommunication network technical specifiction of Wireless Intelligent Network (WIN)Phase2 (USD) via email in 1-10 business day VALID
YD/T 1312.7-2004 Requirements and measurement methods of electromagnetic compatiblilty for radio communication equipment Part 7:trunked radio (TETRA)equipment (USD) via email in 1-3 business day VALID
YD 605-1993 (USD) via email in 1 business day VALID
YD/T 1328-2009 The technical requirement and test method for the charging performance of currently used central office switching equipment——mobile network part (USD) via email in 1-3 business day ABOLISHED
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