EXECUTION COPY FIRST AMENDMENT TO REVOLVING CREDIT AGREEMENT THIS FIRST AMENDMENT TO REVOLVING CREDIT AGREEMENT (this "Amendment"), dated as of April 28, 1998, is entered into by and among MCI COMMUNICATIONS CORPORATION, a Delaware corporation (the...Revolving Credit Agreement • May 15th, 1998 • Mci Communications Corp • Telephone communications (no radiotelephone) • New York
