Small system: 1-10 base-stations, 50 handsets and 10 simultaneous calls. (DECT manager , is also a DECT base .and in this mode it supports 5 concurrent calls)
Medium system: 11-60 base-stations, 250 handsets and 60 simultaneous calls. (Due to capacity, DECT manager is only a manager. Switching between Medium and Small is costing you one additional device.)
Large system: Up to 6000 base-stations, 20000 handsets and 6000 simultaneous calls. Virtual Integrator is needed.