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 China 'GB/T 17789-1999 ' standard english version:

　

NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

GB/T 17789-1999

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
在PSTN或二线点对点租用电话型电路上同时传送数据和数字化编码语音信号的规程
Issued Date:1999-07-13 　 Implemented Date:2000-01-01
Issued by: 　 The Standardization Administration of the People's Republic of China
　

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GB Standard Code GB/T 17789-1999
Standard Category China National Standards
GB Standard English Title 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 Standard Chinese Title 在PSTN或二线点对点租用电话型电路上同时传送数据和数字化编码语音信号的规程
Chinese Version Price $5.00  per  page
English Translation Fee $15.00~$30.00   per  page
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