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YD 336-1988

Chinese Standard: 'YD 336-1988'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusRelated Standard
YD 336-1988English359 Add to Cart Days<=3 Digital Line Signalling for Manual Toll Exchange to Local Exchange YD 336-1988 Obsolete YD 336-1988

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