An access point has the physical capacity to handle 2,048 MAC addresses. However, the access point is a shared medium and acts as a wireless hub. Therefore, a large number of users on an individual access point degrades performance. The best estimates of potential client population for a given install site come from a presales site survey. Contact your Cisco Systems Engineer (SE), Cisco account team or Cisco authorized wireless reseller for assistance in the coordination of a site survey by a qualified survey partner.