2400 bits per second duplex modem using the echo cancellation technique standardized for use on the general switched telephone network and on point-to-point 2 wire leased telephone-type-circuits
NORMA vydána dne 30.6.1988
Designation standards: GB/T 9541-1988
Publication date standards: 30.6.1988
Country: Chinese technical standard
Kategorie: Technické normy GB