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YD/T 1061-2003 The Specification of IP over SDH(ITU-T X.85/Y.1321.MOD) 315 (USD) via email in 1-3 business day VALID
YD/T 2761-2014 via email in VALID please email coc@codeofchina.com for quotation
YD/T 2592-2013 via email in VALID please email coc@codeofchina.com for quotation
YDN 036-1997 2400 (USD) via email in 1-10 business day ABOLISHED
YD/T 981.2-2009 Optical Fiber Ribbon Cables for Access Network Part 2:Central Loose Tube Type 330 (USD) via email in 1-3 business day VALID
YD/T 1371.5-2006 Technical requirements for Uu interface of 2GHz TD-SCDMA Digital Cellular Mobile Communication Network Physical Layer Technical Part 5: Physical Layer Procedure 300 (USD) via email in 1-3 business day ABOLISHED
YD/T 2884-2015 via email in VALID please email coc@codeofchina.com for quotation
YD/T 1403-2005 The technical requirement and test method of service qualification of peer peer short message interworkding between networks 510 (USD) via email in 1-5 business day VALID
YD/T 1745-2008 Security Protection Testing Requirements for Transport Network via email in ABOLISHED please email coc@codeofchina.com for quotation
YD/T 744-1995 180 (USD) via email in 1-3 business day VALID
YD/T 1475-2006 Technical Requirements for Access Network——Passive Optical Network Based on Ethernet(EPON) 1770 (USD) via email in 1-10 business day VALID
YDC 023-2006 Test Specification of Mobile Station (MS) for 800MHz CDMA 1X Digital Cellular Mobile Telecommunication Network, Part Ⅰ: Minimum Standard , Function and Performance 2520 (USD) via email in 1-10 business day ABOLISHED
YD/T 2822-2015 Technical requirements for Unified IMS to support business communication service 550 (USD) via email in 1 business day VALID
YD/T 2568.3-2013 via email in VALID please email coc@codeofchina.com for quotation
YD/T 2892-2015 via email in VALID please email coc@codeofchina.com for quotation
YD/T 1285-2003 The test method for quality of communication for inter-public telecom network—call complete ratio and post-dialling delay for telephone call 435 (USD) via email in 1-3 business day VALID
YD/T 2947-2015 via email in 1 business day VALID please email coc@codeofchina.com for quotation
YD/T 2069-2013 Technical requirement for general packet radio service (GPRS) equipment of digital cellular mobile telecommunication network (Phase I) 1629 (USD) via email in 1 business day VALID
YD/T 1883.1-2009 Technical Requirements and Testing Methods for Voice Service of the Fixed Softswitch Network Part 1:TG and SG Access Mode via email in ABOLISHED please email coc@codeofchina.com for quotation
YD/T 1685.1-2007 800MHz CDMA Network Management Interface Technical Specification Part 1:Intelligent Network Management Interface via email in VALID please email coc@codeofchina.com for quotation
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