"inside plant." YourDictionary, n.d. Web. 12 November 2018. <https://www.yourdictionary.com/inside-plant>.
inside plant. (n.d.). Retrieved November 12th, 2018, from https://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.