Judge Greene 's ruling is credited with opening the US telecommunications industry to competitive market forces .
Judge Greene 's ruling mandated the divestiture of AT&T and broke up the Bell System monopoly by creating seven autonomous Baby Bell companies .
Judge Judge 's ruling is credited with opening the US telecommunications industry to competitive market forces .
Judge Greene 's ruling mandated the divestiture of AT&T and broke up the Bell System monopoly by creating seven autonomous Baby Bell companies .