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www.ChineseStandard.net Database: 189760 (25 Oct 2025)

YDN030.1-1997

Chinese Standard: 'YDN030.1-1997'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusRelated Standard
YDN 030.1-1997English1879 Add to Cart Days<=7 Implications and process of universal personal telecommunication, wide area Centrex switch (WAC), vote of telephone (VOT) and mass calling (MAS) services (internal standard) YDN 030.1-1997 YDN 030.1-1997

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