The Cisco Unified IP Phone 9971 is an executive class collaboration endpoint that provides voice, video, applications and accessories. Highlights include Gigabit Ethernet, Wideband Audio, Color Touchscreen Display, desktop Wi-Fi connectivity along with a new industrial design and user interface designed for simplicity and high usability. Camera included for 2-way video conferencing. Intended to be used via Power Over Ethernet (POE) Optional power adapter are sold Separately. Cisco Unified Communications Manager is required. Does not work with non-Cisco VOIP systems.