Special Features:

Full or half dupiex on 4 wires data rates up to 19, 200bps, range up to 28km at 1200bps, controlled or continous carrier, v.54 diag, auto equalizer

Properties:

An item which modulates and demodulates one or more electrical signals. It connects data terminal equipment to a communication line or network such as telephone, radio or telegraph. It may include the multiplexing and demultiplexing circuits, circuit amplifiers and source(s) of carrier frequency. For items designed for light signals, see modem, fiber optic.