February 29, 2000 NOTICE OF CHANGE OF EVIDENTIARY HEARING DATES (MAY 16-18, 2000) RE: In the Matter of the Petitions of MCI WorldCom, Inc./Sprint Corporation, U. S. Sprint Communications Company, and MCI Telecommunications Corporation, Docket No. UT-991991 and Cause Nos. U-86-79 and U-86-101, consolidated. TO ALL PARTIES: PLEASE TAKE NOTICE that the dates for evidentiary hearings in this proceeeding have been changed to accommodate the schedules of the Commissioners. Evidentiary hearings will be held on May 16-18, 2000, instead of May 15-17, 2000. Sincerely, KAREN M. CAILLÉ Administrative Law Judge