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GB/T 17789-1999

Chinese Standard: 'GB/T 17789-1999'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusRelated Standard
GB/T 17789-1999English629 Add to Cart Days<=3 Procedures for simultaneous transmission of data and digitally encoded voice signals over the PSTN or over 2-wire leased point-to-point telephone type circuits GB/T 17789-1999   GB/T 17789-1999

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