The

Cisco Cisco Systems, Inc., commonly known as Cisco, is an American-based multinational corporation, multinational digital communications technology conglomerate (company), conglomerate corporation headquartered in San Jose, California. Cisco develo ...

Compatible Extensions (CCX) Specification describes a list of functional extensions to the

IEEE The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operati ...

802.11 Wireless LAN standard to support fast roaming (

CCKM Cisco Centralized Key Management (CCKM) is a form of Fast Roaming and a subset of the Cisco Compatible EXtensions (CCX) specification. When a wireless LAN is configured for fast reconnection, a Lightweight Extensible Authentication Protocol (LEA ...

) with upgraded security, reliability, and diagnostic performance. This specification is Cisco proprietary and a device manufacturer requires a Cisco license agreement in order to develop mobile devices with this technology. Currently, CCX versions 4 (CCXv4) and 5 (CCXv5) are supported. A working CCX network consists of one or more Cisco

wireless access point In computer networking, a wireless access point (WAP), or more generally just access point (AP), is a networking hardware device that allows other Wi-Fi devices to connect to a wired network. As a standalone device, the AP may have a wired co ...

s, along with one or more CCX-enabled

mobile devices A mobile device (or handheld computer) is a computer small enough to hold and operate in the hand. Mobile devices typically have a flat LCD or OLED screen, a touchscreen interface, and digital or physical buttons. They may also have a physical ...

. CCX is typically deployed in industrial, enterprise, or institutional environments where 802.11 wireless connectivity or reliability is extremely important. Typical deployments include barcode scanners in a warehouse,

VoIP Voice over Internet Protocol (VoIP), also called IP telephony, is a method and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. The terms Interne ...

mobile phones in an office environment, and wearable medical devices that report patient status. The Cisco CCX license agreement does not include the software to actually implement CCX on a mobile device. Device makers will usually license CCX technology from an approved vendor.

External links

Cisco Compatible Extensions (CCX) partner programCisco Aironet Extensions IE (CCX IE)
{{Wireless-stub Compatible EXtensions