Megacom

Overview
Megacom is

"[a]n AT&T service, first offered in November 1986, that requires customers (predominately businesses) to arrange for access via their own facilities, AT&T private line service, or local telephone company special access service. It has both a flat minimum monthly charge and distance and usage sensitive charges. It differs from previous AT&T services in that it offers the access portion of the long-distance service separately."