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YD/T 1366-2006 Testing methods for RAN equipment of 2GHz TD-SCDMA digital cellular mobile communication network 2490 (USD) via email in 1-10 business day VALID
YD/T 1369.4-2006 Technical requirements for Iub interface of 2GHz TD-SCDMA digital cellular mobile communication network part 4:NBAP signalling 5940 (USD) via email in 1-10 business day ABOLISHED
YD/T 638.1-1993 30 (USD) via email in 1-3 business day VALID
YD/T 2827.5-2015 via email in VALID please email coc@codeofchina.com for quotation
YD/T 1671-2007 Technical Requirements for 2GHz cdma2000 Digital Cellular Mobile Communication Network Broadcast Multicast Services(BCMCS):A Interface via email in ABOLISHED please email coc@codeofchina.com for quotation
YD/T 2618.2-2013 Technical specifications for 40 Gb/s PM optical launching and receiving syncretic module - Part 2: modulation of differential orthogonal phase shift keying (DQPSK) 710 (USD) via email in 1 business day VALID
YD/T 1519-2006 Interoperability Specification and Test Measurement for VoIP Accessing Equipment based on MGCP via email in VALID please email coc@codeofchina.com for quotation
YD/T 720-1998 Test procedures for telephone sets 420 (USD) via email in 1-3 business day
YD/T 2900-2015 via email in VALID please email coc@codeofchina.com for quotation
YD/T 513-1992 135 (USD) via email in 1-3 business day
YD/T 1607-2007 Technical Requirements and Test Methods for Visual Transmission Characteristics of Mobile Terminal via email in ABOLISHED please email coc@codeofchina.com for quotation
YD/T 2061-2009 Constant temperature & humidity air conditioning system for telecommunication room via email in VALID please email coc@codeofchina.com for quotation
YDN 085-1998 via email in please email coc@codeofchina.com for quotation
YD/T 999-1999 Multicast adaptation protocol 555 (USD) via email in 1-5 business day VALID
YD 5022-1996 Design Code for Public Packet Switched Data Network Engineering 540 (USD) via email in 1-5 business day VALID
YD/T 1642-2009 Test Method of Internet Network and Service Quality via email in VALID please email coc@codeofchina.com for quotation
YD/T 5027-2005 Design Specification on the Engineering of Centralized Monitoring&Control System for Telecommunication Power Supply 480 (USD) via email in 1-5 business day VALID
YD/T 5110-2015 via email in VALID please email coc@codeofchina.com for quotation
YD 5054-1998 Standard for Classification of Seismic Protection of Posts and Telecommunications Buildings 285 (USD) via email in 1-3 business day ABOLISHED
YD/T 5211-2014 via email in VALID please email coc@codeofchina.com for quotation
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