A facilities-based carrier, i.e., one that owns the switching and transmission systems that compose the network it uses to provide services to its customers. See also carrier and light carrier.
"heavy carrier." YourDictionary, n.d. Web. 25 May 2018. <http://www.yourdictionary.com/heavy-carrier>.
heavy carrier. (n.d.). Retrieved May 25th, 2018, from http://www.yourdictionary.com/heavy-carrier