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YD/T 1616-2007 Technical Requirements for IP Multicast Service via email in VALID please email coc@codeofchina.com for quotation
YD/T 1794-2008 Network Management Technical Requirement for 2GHz Digital Cellular Communications Network Performance Criteria of Element Management System (EMS)Itf-N (USD) via email in 1-3 business day VALID
YD/T 1520-2006 Interoperability Specification and test measurement for H.323 based VoIP accessing equipment via email in VALID please email coc@codeofchina.com for quotation
YD/T 1928.2-2009 Softswitch Network Management System Technical Specification--Part 2:NMS Function via email in VALID please email coc@codeofchina.com for quotation
YD/T 695-2004 Principles and technical requirements of protection against overvoltages and overcurrents in local telecom system (USD) via email in 1-3 business day ABOLISHED
YD/T 1799-2008 Evaluation Methods for Qualification of Network and Information Security Emergency Response Service (USD) via email in 1-3 business day VALID
YD/T 1329-2004 Integrated Circuit for The overvoltage and overcurrent protection of telecommunications installations (USD) via email in 1-3 business day VALID
YD/T 2027-2009 A QoS control architecture for ethernet-based IP access networks via email in VALID please email coc@codeofchina.com for quotation
YD/T 1620.5-2009 MSTP based on SDH Network Management System Technical Specification Part 5:EMS-NMS Interface Information Model based on IDL/IIOP via email in VALID please email coc@codeofchina.com for quotation
YD/T 1471-2006 Service Technical Requirements for Layer 2 Virtual Private Network (VPN)Based on IP (USD) via email in 1-3 business day VALID
YD/T 1767.5-2009 Technical requirements for automatically switched optical network (ASON) management Part 5:EMS-NMS interface information model based on IDL/IIOP via email in VALID please email coc@codeofchina.com for quotation
YD/T 1605-2007 Protocol Requirements of Peer to Peer Multimedia Messaging Service Interworking between Networks via email in VALID please email coc@codeofchina.com for quotation
YD/T 1382-2005 IP network technical requirements---traffic control (USD) via email in 1-3 business day VALID
YD/T 1793-2008 Network Management Technical Requirement for 2GHz Digital Cell Mobile Communication Network Element Management System (EMS) Function (USD) via email in 1-3 business day VALID
YDC 036-2004 800MHz CDMA 1X HRPD Technical specification AT Part (USD) via email in 1-3 business day ABOLISHED
YD/T 873-1996 (USD) via email in 1-3 business day VALID
YD/T 1290.3-2008 Technical Requirements of Peer to Peer Short Message Interworking between Networks Part3:Interworking between PLMN and PLMN (USD) via email in 1-3 business day ABOLISHED
YD/T 855.3-1996 (USD) via email in 1-8 business day VALID
YD/T 1610-2007 Testing Methods for IPv6 Routing Protocl—Intermediate system to Intermediate system intra-domain routing exchange protocol(IS-IS) via email in VALID please email coc@codeofchina.com for quotation
YD/T 5067-2005 Specifications on Engineering Acceptance for 900/1800MHz TDMA Digital Cellular Mobile Communication System (USD) via email in 1-5 business day VALID
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