A key telephone system (KTS) feature that automatically selects an outside line when a station user picks up the telephone receiver.
"automatic line selection." YourDictionary, n.d. Web. 25 May 2018. <http://www.yourdictionary.com/automatic-line-selection>.
automatic line selection. (n.d.). Retrieved May 25th, 2018, from http://www.yourdictionary.com/automatic-line-selection