BibTeX:

@article{IJIRSTV2I9055,
     title={Demand Assigned Multiple Access Subsystem},
     author={Hitesh A. Momaya, Varun M. Patel, Vijay I. Patel and Vijay B. Patel},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={2},
     number={9},
     pages={190--193},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV2I9055.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

Demand Assigned Multiple Access (DAMA) is a name for a central allocation of network resources. DAMA is one of the two main techniques for allocating channels to users. In fixed-assigned multiple access, each user is allocated a channel permanently, whether they use it or not. The most multiple-access systems use DAMA in which the available channels are allocated on an as required basis to users. When the user is finished with the channel it is relinquished and made available for another user. DAMA is a technique used to assign satellite channels to on an as request basis. It increases the amount of users in a pool of satellite channels that are available for use by any station in a network. It is assumed that not all users will need simultaneous access to the same communication channels. So that a call can be established, DAMA assigns a pair of available channels based on requests issued from a user. Once the call is completed, the channels are returned to the pool for an assignment to another call. Since the resources of the satellite are being used only in proportion to the occupied channels for the time in which they are being held, it is a perfect environment for voice traffic and data traffic in batch mode.

Asynchronous Transfer Mode, Baud rate, Frame, Multiplexer, Satellite communication