DEM technology is an implementation of intelligent congestion control. If congestion is predicted or detected, the DEM gateway automatically scales back the less delay-sensitive traffic and gives priority to more delay-sensitive applications. Applications are managed to their respective resource needs to provide the best QoE. Over The Top (OTT) applications and users are managed to their respective resource needs and configured preferences.
A DEM-GW builds on AA Layer 3 to Layer 7 DPI capabilities to detect applications per AA subscriber as well as per congestion point. It allows the DEM-GW AA to take intelligent actions when congestion occurs in the access network.