What is LINE on a fax? Definition and usage

LAST UPDATE: April 8th, 2018

Definition

A ‘LINE’ port on a fax machine or fax modem is where the telephone line connects.

There is often an ‘EXT’ port which is used to connect a phone extension.

Usage

Fax machines and fax modems have a ‘LINE’ port to connect the fax to the phone jack.