The Mashattan Residential and Commercial Center is a largely populated residential project and with it being located in the central point of Istanbul allows many people tocontinue their lives at this point. Before this project was completed, Security officers working in each building of the Center were not able to communicate efficiently with other buildings officers at the Emergency Observation Station were unable to call the officers of other buildings. The officers or employees had to go to each other’s site resulting in unproductive time. The client selected the iPECS solution through an evaluation process and because of the ability to use T-Net (Transparent Networking) structure, as well as ease of integration with existing systems and a wide range of products portfolio. The client is very satisfied with product structure and functionality which enables their employee to enhance productivity.