Bellsouth Telecommunications, Inc., Plaintiff-Counter-Defendant-Appellant-Cross-Appellee, United States of America, Intervenor-Appellant v. McImetro Access Transmission Services, Inc., Defendant-Counter-Claimant-Appellee, Georgia Public Service Commission, Robert B. Baker, Jr., in His Official Capacity as Chairman, Defendants-Appellees-Cross-Appellants. Bellsouth Telecommunications, Inc., Plaintiff-Counter-Defendant-Appellant-Cross-Appellee, United States of America, Intervenor-Appellant v. Worldcom Technologies, Inc., a Successor in Interest to Mfs Intelenet of Georgia, Inc., Defendant-Counter-Claimant-Appellee, E. Spire Communications, Inc., Formerly Known as American Communications Services, Inc., Nextlink Georgia, Inc., Teleport Communications Atlanta, Inc., Georgia Public Service Commission, Robert B. Baker, Jr., in His Official Capacity as Chairman, Defendants-Appellees-Cross-AppellantsFiledJan 10, 2003