"inside plant." YourDictionary, n.d. Web. 24 May 2018. <http://www.yourdictionary.com/inside-plant>.
inside plant. (n.d.). Retrieved May 24th, 2018, from http://www.yourdictionary.com/inside-plant
The facilities within a telephone company's central office (CO). It includes the main distribution frames (MDFs), switches, digital cross-connects, add/drop multiplexers and other networking equipment. Contrast with outside plant. See central office.