The Cisco Wireless LAN Controller Module (WLCM) work in conjunction with Cisco Aironet Access Points and the Cisco Wireless Control System (WCS) to provide systemwide wireless LAN functions. As a component of the Cisco Unified Wireless Network, the WLCM gives network administrators the visibility and control necessary to effectively and securely manage business-class WLANs and mobility services, such as enhanced security, voice, guest access, and context-aware mobility or location services.