Admission control

Admission control is a validation process in communication systems where a check is performed before a connection is established to see if current resources are sufficient for the proposed connection.

Applications
For some applications, dedicated resources (such as a wavelength across an optical network) may be needed in which case admission control has to verify availability of such resources before a request can be admitted.

For more elastic applications, a total volume of resources may be needed prior to some deadline in order to satisfy a new request, in which case admission control needs to verify availability of resources at the time and perform scheduling to guarantee satisfaction of an admitted request.

Admission control systems

 * Asynchronous Transfer Mode
 * Audio Video Bridging using Stream Reservation Protocol
 * Call admission control
 * IEEE 1394
 * Integrated services on IP networks
 * Public switched telephone network