HOUSTON, TEXAS - February, 2005 - Enterprise Systems Corporation Deploys Nortel Networks Business Communications Manager (BCM) hosting a Remote IP office for Medical Center Ear, Nose and Throat. Utilizing the WAN features of the BCM, ESC has deployed a Passport Router with Bay Stack for a full IP remote office solution for new office at Park Plaza Professional Building. Looking ahead to the second quarter of 2005 ESC will deploy a professional call center for scheduling and appointments.