VoIP phone
The Cisco Wireless IP Phone 7920 is a first-generation wireless VoIP phone by Cisco Systems, and has interoperability with Cisco CallManager and other Cisco voice software. The hardware connects via the IEEE 802.11b-1999 protocol. For security, the 7920 supports Lightweight Extensible Authentication Protocol as well as 40- and 128-bit Wired Equivalent Privacy.