Also known as line extender. A device that more or less doubles the maximum physical reach of a digital subscriber line (DSL) or ISDN service. A line doubler essentially is a repeater. See also HDSL, repeater, and xDSL.
"line doubler." YourDictionary, n.d. Web. 18 January 2019. <https://www.yourdictionary.com/line-doubler>.
line doubler. (n.d.). Retrieved January 18th, 2019, from https://www.yourdictionary.com/line-doubler
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