EXHIBIT A SETTLEMENT AGREEMENTSettlement Agreement • September 7th, 2005 • Ontario
Contract Type FiledSeptember 7th, 2005 JurisdictionThis SETTLEMENT AGREEMENT (the “Agreement”) is entered into on September , 2005 (the “Closing Date”) by and among VarTec Telecom, Inc., a Texas corporation (“VTI”); VarTec Telecom Holding Company, a Delaware corporation (“VTHC”); VarTec Solutions, Inc. f/k/a eMeritus Communications, Inc., a Delaware corporation (“VSI” and together with VTI and VTHC, the “VarTec Entities”); Teleglobe Telecom Corporation f/k/a Excel Communications, Inc., a Delaware corporation (“TTC”); Teleglobe Holdings (U.S.) Corporation, a Delaware corporation (“THUSC,” and together with TTC, the “Teleglobe U.S. Entities”); Teleglobe USA Inc., a Delaware corporation (“TUSA”); Teleglobe Communications Corporation, a Delaware corporation (“TCC”); and Teleglobe Inc., a corporation governed by the Canadian Business Corporations Act (“TI” and together with the Teleglobe U.S. Entities, TUSA and TCC, the “Teleglobe Entities”). VTI, VTHC, VSI, TTC, THUSC, TUSA, TCC, and TI are sometimes individually referred to herein as a “P