Bell 202

Bell 202

An AT&T standard for asynchronous 1800 bps full-duplex modems using DPSK modulation over four-wire leased lines as well as 1200 bps half-duplex operation over dial-up lines.
Mentioned in ?
References in periodicals archive ?
“ASE has long been committed to developing world class communication products including ASE2000, Bell 202 Modems, 'SPT' Protocol Translators, and 'SAM' Substation Alarm Annunciators.
The new NCN5193 single-chip CMOS device supports Bell 202 shift frequencies between 1200 hertz (Hz) and 2200 Hz, and is capable of delivering a 1200 bit per second (bps) half- duplex data rate.