HOUSTON, TEXAS - April, 2003 - Enterprise Systems Corporation announced today that 3C's Partner status has been achieved from Nortel Networks of Brampton, Ontario Canada. The 3C's Partner status is the top service designation allocated for Partners in North America who meet stringent requirements in the elements of Competency, Capability and Capacity. The 3C's Service Performance Branding Program provides a valuable mechanism for differentiating a Partner's service capabilities.