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YD/T 1740-2008 Security Protection Requirements for Value Added Service Network (Intelligent Network) (USD) via email in 1-3 business day VALID
YD/T 1728-2008 Security Protection Management Guide for Telecom Network and Internet (USD) via email in 1-3 business day VALID
YD/T 1765-2008 Noun Terms in Communication Safety and Protection (USD) via email in 1-5 business day VALID
GB/T 14731-1993 Synchronous digital hierarchy bit rates via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 1417-1978 General terminology for telecommunications equipment (USD) via email in 1-10 business day VALID
YD/T 1737-2008 Security Protection Test Requirements for Internet via email in ABOLISHED please email coc@codeofchina.com for quotation
GB/T 7400.11-1999 Digital television terminology via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
YD/T 1429-2006 Performance requirements and Testing Methods for Lightning Protection system of Running Telecommunication Stations/Sites (USD) via email in 1-3 business day VALID
GB/T 13504-2008 Diagnostic rhyme test(DRT) method of Chinese articulation (USD) via email in 1-3 business day VALID
YD/T 1730-2008 Implementation Guide for Security Risk Assessment of Telecom Network and Internet (USD) via email in 1-3 business day VALID
GB/T 14733.3-1993 Terminology for telecommunications-Dependability and quality of service via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 14185-1993 General specification for language learning systems via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
SJ/T 11284-2003 Laminated metal plastic foil for telecommunication cable shielding (USD) via email in 1-3 business day VALID
GB/T 28507-2012 Description guidelines for voice exhibition of web documents (USD) via email in 1-3 business day VALID
YD/T 1739-2008 Security Protection Testing Requirements for Value Added Service Network (Messaging Network) (USD) via email in 1-3 business day VALID
YD/T 1293-2003 IP over WDM integrated network management system technical specification (USD) via email in 1-8 business day VALID
YD/T 1749-2008 Security Protection Testing Requirements for Signalling Network (USD) via email in 1-3 business day VALID
SY/T 5457-1992 (USD) via email in 1-8 business day
YD/T 1755-2008 Classified Security Protection Testing Requirements for Telecom Network and Internet for Physics Environment (USD) via email in 1-3 business day VALID
GB/T 13998-1992 Measuring methods of the magnetic induced longitudinal EMF, magnetic induced voltage with respect to earth, electric induced current and psophometric voltage on telecommunication lines via email in 1-3 business day please email coc@codeofchina.com for quotation
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