Access points for corporations are more expensive and feature-rich than those sold to residential customers. www.TechnicalPDF.com They contain higher-functioning security capabilities, such as intrusion detection and protection, the ability to detect hacker attacks, and Quality of Service (QoS) needed for voice and video. There are also robust access points for outdoor locations that are made to withstand harsh environmental conditions. For example, an enterprise might want outdoor coverage on a campus with multiple buildings. Each access point requires electrical power. Cabling and Electrical Requirements In a similar manner to cellular networks, all Wi-Fi networks require wired connections to switches, controllers and data centers, and electricity to power access points. Access points in organizations are connected to the LAN via a data jack and, from there, to unshielded twisted-pair (UTP) copper wire connection to the local wiring closet. Electrical and cabling requirements represent an often-overlooked cost in implementing Wi-Fi networks. The power each access point requires can be located remotely in wiring closets on each floor or locally by nearby electrical outlets. For local power, new outlets might be needed. Wi-Fi Controllers Non-mesh Wi-Fi in small and medium-sized organizations have controllers that manage access points and monitor the network. Non-mesh Wi-Fi networks require that traffic be routed through centralized controllers. The controllers are part of core switches or separate devices. If they are part of separate devices, they sit between the wireless and wired parts of networks. They are programmed with specifications of the level of access different staff are allowed. They act as gateways to the network, allowing access only to certain users. They often allow access to particular applications on a per- user basis. In addition, centralized controllers authenticate users and access points. Importantly, they can identify unauthorized rogue access points that staff www.TechnicalPDF.com may bri