Bell 201B

   AT&T's standard for 2400-bps, synchronous, full-duplex modems used over public telephone networks or leased lines.

IT glossary of terms, acronyms and abbreviations. . 2015.

Look at other dictionaries:

  • Modem — For other uses, see Modem (disambiguation). A modem (modulator demodulator) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The… …   Wikipedia

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