limited-distance modem[′lim·əd·əd ¦dis·təns ′mō‚dem]
A modem used only for communications within a building in order to improve the signal quality where a long distance exists between the terminal and the computer.
A device designed to transmit and receive signals over relatively short distances, typically less than 5 miles (8 kilometers). Abbreviated LDM. Also known as line driver.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
line driverA device that extends the transmission distance between terminals and computers connected via private lines or networks. Also called a "short-haul modem" or "limited-distance modem," line drivers can extend a signal that is normally limited to a few dozen or a few hundred feet up to several miles. Line drivers are used to connect point-of-sale (POS) terminals, sensors, machine tools and myriad other digital devices to a host computer.
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