TY  - RPRT
TI  - Federal Information Processing Standards Publication: 4,800 bits per second four-wire duplex and two-wire half-duplex modems for data communications use on telephone-type circuits 
PY  - 1992
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST FIPS 165
DO  - 10.6028/NIST.FIPS.165
ER  -