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YD/T 1388.4-2005 Technical requirements of the softswitch based services part 4:Multiparty call services (USD) via email in 1-3 business day VALID
YD/T 1388.3-2005 Technical requirements of the softswitch based services part3:Call forwarding services (USD) via email in 1-3 business day VALID
YD/T 1921.1-2009 Technical Requirements for IPService Detail Record Part 1:General Requirements via email in VALID please email coc@codeofchina.com for quotation
YD/T 1926.1-2009 IT Operations and Maintenance Service Management Technical Specification Part 1:Architecture via email in VALID please email coc@codeofchina.com for quotation
YD/T 3240-2017 Technical requirements of intelligent application deployment platform for mobile internet via email in VALID please email coc@codeofchina.com for quotation
YD/T 3247-2017 Mobile payment technical requirements for multi-application management protocol via email in VALID please email coc@codeofchina.com for quotation
YD/T 2026-2009 The technical requirement and evaluation method for quality of IP telephony via email in VALID please email coc@codeofchina.com for quotation
YD/T 2015-2009 Architecture for IPTV Service Management System via email in VALID please email coc@codeofchina.com for quotation
GB/T 32406-2015 Technical requirements of M2M platform for logistic information service in mobile network (USD) via email in 1-3 business day VALID
YD/T 1932-2009 Technical Requirements of Services based on the Unified IMS Identification Presentation and Restriction Service (Release 1) via email in VALID please email coc@codeofchina.com for quotation
YD/T 3306-2017 Function Architecture of Future Data Network via email in VALID please email coc@codeofchina.com for quotation
YD/T 1895.3-2009 Mobile Network Service Dial Testing Management Technical Requirement Part 3:Dail Testing Management System And Testing Card Management Equipment Inteface Specification via email in VALID please email coc@codeofchina.com for quotation
YD/T 1926.2-2009 IT Operations and Maintenance Service Management Technical Specification Part 2:Managed Service Definition via email in VALID please email coc@codeofchina.com for quotation
YD/T 1377.2-2005 Testing methods of service and protocol of peer to peer short message interworking between networks.Part2:Tesing methods of peer to peer short message interworking between PSTN and PSTN (USD) via email in 1-5 business day VALID
YD/T 2024-2009 Technical Requirements of Increasing Trunk Capacity for Internet Connections via email in ABOLISHED please email coc@codeofchina.com for quotation
YD/T 1537-2006 Generic Requirements for Telecommunications System Outdoor Cabinets (USD) via email in 1-3 business day ABOLISHED
YD/T 1979.1-2009 Technical Requirements of Roaming from 3G to 2G Network and from 3G to 3G Network Managed by Different Operators Part 1:Roaming from TD-SCDMA to GSM/GPRS Network and Roaming from TD-SCDMA to TD-SCDMA Network via email in please email coc@codeofchina.com for quotation
YD/T 1357-2005 The test specification of intelligent netowrk equipment Integrated Service Control Point(ISCP) (USD) via email in 1-10 business day VALID
T/CCSA 236-2018 Technical Requirements of Mobile Internet and Smart Home System Interface for Automatic Connection between Organizing Network Terminal and Smart Home Gateway via email in VALID please email coc@codeofchina.com for quotation
YD/T 1533.1-2006 Technical Requirements of Multimedia Message Service Based on Fixed Network Part 1:Equipment of Multimedia Message Service Center(MMSC) via email in VALID please email coc@codeofchina.com for quotation
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