Cisco IP phone 7821 delivers simple, highly secure, and cost-effective VoIP communications for small to large businesses. It is ideal for occasional-to-light communications needs, such as in lobbies, cafeterias, and conference centers. The IP phone is supported on Cisco on-premises, hosted, Webex Calling and third-party call control provide flexible deployment options. The phone maintains the usability standards and standards for the best user experience. The phone is also energy-efficient and eco-friendly.