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YD/T 1374.6-2007 Technical Requirements for Iu Interface of 2GHz TD-SCDMA/WCDMA Digital Cellular Mobile Communication Network(Phase Ⅱ)Part 6:User Plane Protocols via email in VALID please email coc@codeofchina.com for quotation
YD/T 1480-2006 Test Methods of Application Server Based on Softswitch 540 (USD) via email in 1-5 business day VALID
YD/T 874-1996 585 (USD) via email in 1-5 business day VALID
YD/T 1075-2000 Test method for network access server 3210 (USD) via email in 1-10 business day VALID
YD/T 1323-2004 Technical requirements for access network Asymmetric Digital Subscriber Line (ADSL) 2040 (USD) via email in 1-10 business day VALID
YDC 047-2007 400/1800MHz SCDMA radio access network system:test method for air interface protocol via email in VALID please email coc@codeofchina.com for quotation
YD/T 1191-2002 Technical specification of adaption layer for No.7 signalling interworking with IP Message Transfer Part (MTP)lever 2 Peer-to-peer Adaption layer(M2PA) 360 (USD) via email in 1-3 business day VALID
YD/T 1964-2009 QoS Technical Requirements for Broadband Customer Network Based on Telecommunication Network via email in VALID please email coc@codeofchina.com for quotation
SJ 20701.2-1998 The interconnection and interoperability of field electronic systems for combined group army Audio-frequency interface 60 (USD) via email in 1-3 business day VALID
YD/T 1706-2007 Technical Requirements for Access Network——Broadband Service Delivery over DSL via email in VALID please email coc@codeofchina.com for quotation
YDC 034-2004 cdma2000 High Rate Packet Data(HRPD)Air Interface Specification 4215 (USD) via email in 1-10 business day ABOLISHED
YDN 101-1998 810 (USD) via email in 1-8 business day
YD/T 969-1998 Network-to-network interface between public data networks providing the frame relay data trausmission service 1065 (USD) via email in 1-8 business day VALID
SJ 20853-2002 Specification of the independent intelligent peripheral interfaced with the serivice control point and the service switch point in the military intelligent network 870 (USD) via email in 1-8 business day VALID
YD/T 1374.3-2007 Technical Requirements for Iu Interface of 2GHz TD-SCDMA/WCDMA Digital Cellular Mobile Communication Network(Phase Ⅱ)Part 3:Signalling Transport via email in VALID please email coc@codeofchina.com for quotation
YD/T 1236-2002 The technical requirement and test methods for video conference system based on N-ISDN 1575 (USD) via email in 1-10 business day VALID
YD/T 970-1998 Generic conference control 1770 (USD) via email in 1-10 business day VALID
YD/T 1981-2009 Test method for Mg/Mi/Mj/Mk/Mw/Gm interface in IMS system in mobile communication network via email in VALID please email coc@codeofchina.com for quotation
YD/T 1449.1-2006 Equipment Technical Requirements for Broadband Customer Network Based on Telecommunication Network Part 1:Gateway 390 (USD) via email in 1-3 business day ABOLISHED
GB 33473-2016 General technical requirements of handover interfacefor instant communication services 240 (USD) via email in 1-3 business day VALID
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