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 China 'GB/T 7621-1987 ' standard english version:

　

NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

GB/T 7621-1987

1200 bits per second duplex modem standardized for use in the general switched telephone network and on point-to-point 2-wire leased telephonecircuits
在电话自动交换网和点对点二线租用电话型电路上使用的标准化的1200比特/秒双工调制解调器
Issued Date:1987-04-03 　 Implemented Date:1987-11-01
Issued by: 　 The Standardization Administration of the People's Republic of China
　

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GB Standard Code GB/T 7621-1987
Standard Category China National Standards
GB Standard English Title 1200 bits per second duplex modem standardized for use in the general switched telephone network and on point-to-point 2-wire leased telephonecircuits
GB Standard Chinese Title 在电话自动交换网和点对点二线租用电话型电路上使用的标准化的1200比特/秒双工调制解调器
Chinese Version Price $5.00  per  page
English Translation Fee $15.00~$30.00   per  page
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