MCI TELECOMMUNICATIONS CORPORATION, PETITIONER, v. FEDERAL COMMUNICATIONS COMMISSION AND UNITED STATES OF AMERICA, RESPONDENTS, AMERICAN TELEPHONE TELEGRAPH COMPANY, SOUTHERN PACIFIC COMMUNICATIONS COMPANY, UNITED STATES TRANSMISSION SYSTEMS, INC., WESTERN UNION TELEGRAPH COMPANY, INTERVENORS. No. 80-1624.United States Court of Appeals, District of Columbia Circuit.Argued June 23, 1981. Decided September 24, 1981. Page 1301 William J. Byrnes, Washington, […]