Court of Appeals for the Seventh Circuit June 18, 1999, 98-3150 (Illinois Bell Telephone Company v. Worldcom Technologies, Inc.)

179 F.3d 566 ILLINOIS BELL TELEPHONE COMPANY d/b/a Ameritech Illinois, Plaintiff-Appellant, Cross-Appellee, v. WORLDCOM TECHNOLOGIES, INC., as successor in interest to MFS Intelenet of Illinois, Inc., Teleport Communications Group, Inc., MCI Telecommunications Corp. and MCImetro Access Transmission Services, Inc., AT & T Communications of Illinois, Inc.