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

STANDARD published on 3.4.1987

English, Chinese -
electronic design (pdf) (670.80 USD)

English, Chinese -

Print design (670.80 USD)

The information about the standard:

Designation standards: GB/T 7621-1987
Publication date standards: 3.4.1987
Country: Chinese technical standard
Category: Technical standards GB