Demand Assigned Multiple Access (DAMA) is an innovation utilized to appoint a channel to users that don’t require to utilize it constantly. DAMA frameworks assign communication channels to a network security system depends on the news by subscriber’s terminals. The channels are returned to the central pool for reassignment to different subscribers at the point when the circuit is not used. DAMA is broadly utilized in satellite communications, especially in VSAT frameworks. It is exceptionally effective in environments involving various users. DAMA is frequently utilized in the military.