HOUSTON, TEXAS – April 15, 2003 – Enterprise Systems Corporation announced today that Authorization for Distribution for Meridian 1 and its Applications (CallPilot, Symposium, Meridian Mail etc.) has been granted from Nortel Networks of Brampton, Ontario Canada. In order for a Partner to be Authorized for Meridian 1 and its Applications, a stringent set of qualifications must be met including service infrastructure, certification and service/sales and marketing competency.