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.

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“ASE has long been committed to developing world class communication products including ASE2000, Bell 202 Modems, 'SPT' Protocol Translators, and 'SAM' Substation Alarm Annunciators.

Kalkitech Acquires US Based Applied Systems Engineering Inc.

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.