DATA-DIAL: Two-Way Communication with Computers From Ordinary dial Telephones An operating system is described which allows users to call up a remotely located computer from ordinary dial telephones. No special hardware or connections are required at the users' telephones. Input to the computer is through the telephone dial;output from the computer is in spoken form. Results of a test with telephones in the Boston area are reported. CACM October, 1963 Marill, T. Edwards, D. Feurzeig, W. CA631027 JB March 13, 1978 5:23 PM 1181 5 698 698 5 698 698 5 698 698 5 698 698 6 698