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YDN 053.3-1997 Technical Specifications for Type 3/4 (AAL) in Adaptation Layer of B-ISDN ATM (USD) via email in 1 business day VALID
YD/T 1105-2001 900/1800MHz TDMA Digital Cellular Mobile Telecommunication Network Technical Specification for General Packet Radio Service Switching Sub-system Equipment (USD) via email in 1-5 business day VALID
YD/T 1188-2002 Access network technical specifcation--Asymmetric Digital Subscriber Line(ADSL)CPE-side equipment (USD) via email in 1-3 business day ABOLISHED
YD/T 1407-2005 Technical specification and test method for interconnecting communication quality of internet exchange (NAP) (USD) via email in 1-3 business day VALID
YD/T 1952-2009 Technical Requirements for Access Network——DSL Multi-Pair Bonding via email in VALID please email coc@codeofchina.com for quotation
YD/T 1374.2-2007 Technical Requirements for Iu Interface of 2GHz TD-SCDMA/WCDMA Digital Cellular Mobile Communication Network(Phase Ⅱ)Part 2:Layer 1 via email in VALID please email coc@codeofchina.com for quotation
GB/T 15837-2008 Interface requirements for digital synchronization network (USD) via email in 1-5 business day VALID
YD/T 1374.1-2007 Technical Requirements for Iu Interface of 2GHz TD-SCDMA/WCDMA Digital Cellular Mobile Communication Network(Phase Ⅱ)Part 1:General Aspects via email in VALID please email coc@codeofchina.com for quotation
YD/T 1162.3-2001 Frame Relay MPLS Technical Specification (USD) via email in 1-3 business day VALID
GB/T 29234-2012 Security technical requirements for broadband customer network based on telecommunication network (USD) via email in 1-3 business day VALID
YD/T 1882-2009 The Technical Requirement of Interworking between Digital Trunking Networks Operated by Different Carrier via email in VALID please email coc@codeofchina.com for quotation
T/ITS 0001-2014 The Standard of the communication technology for Gateway Terminal of operating vehicles via email in VALID please email coc@codeofchina.com for quotation
YD 5070-1998 Code for Acceptance of CHINANET Engineering (USD) via email in 1-5 business day ABOLISHED
YDB 008.3-2007 via email in VALID please email coc@codeofchina.com for quotation
YD/T 1562-2007 Technical Requirement for 2GHz cdma2000 Digital Cellular Mobile Communication Network Equipment:High Rate Packet Data(Phase Ⅰ)Access Terminal via email in ABOLISHED please email coc@codeofchina.com for quotation
YD/T 1417-2005 Testing methods for access network equipment-Signle pair High-bit-rate Digital Subscriber Line (SHDSL) (USD) via email in 1-3 business day VALID
T/ITS 0019-2015 Interface Protocol of commercial vehicle ITS station gateway for vehicle data via email in VALID please email coc@codeofchina.com for quotation
YD/T 1243.1-2002 Technical specification for IP trunk media gateway (USD) via email in 1-5 business day VALID
YD/T 3218-2017 Management requirements with quality of service (QoS)of cloud datacenter network for network intelligent capability enhancement (NICE) via email in VALID please email coc@codeofchina.com for quotation
YD/T 1256-2003 Supplementary Specification of IN CS-1 INAP (USD) via email in 1-3 business day VALID
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