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

NORMA vydaná dňa 3.4.1987

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The information about the standard:

Designation standards: GB/T 7621-1987
Publication date standards: 3.4.1987
Country: Chinese technical standard
Kategória: Technické normy GB