Open AccessFederal Information Processing Standards Publication: 2,400 bits per second four-wire duplex and two-wire half-duplex modems for data communications use on telephone-type circuits
Publication year - 1992
Language(s) - English
Resource type - Reports
DOI - 10.6028/nist.fips.164
Subject(s) - duplex (building) , telecommunications , electronic circuit , electrical engineering , computer science , engineering , chemistry , dna , biochemistry