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Database: 189759 (19 Oct 2025)
GB/T 12197-1990 English PDF
Standard ID
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Standard Title (Description)
Status
PDF
GB/T 12197-1990
English
RFQ
ASK
6 days [Need to translate]
Methods of measurement for pushbutton telephone with DTMF
Obsolete
GB/T 12197-1990
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Basic data
Standard ID
GB/T 12197-1990 (GB/T12197-1990)
Description (Translated English)
Methods of measurement for pushbutton telephone with DTMF
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
M40
Word Count Estimation
27,235
Date of Issue
2/1/1990
Date of Implementation
8/1/1990
Regulation (derived from)
National Standard Committee Bulletin (2005 No. 146)