This VOIP IP telephone will require a VOIP Hosted Provider to function. It is not an Analog Telephone and can not be used with any analog service provider. This VOIP IP Telephone will require programming. It is not Plug and Play. It will also require a power supply or POE - Power Over Ethernet - switch. Please check your exact set up prior to purchasing. These color 12-line mid-range Business Media Phones are for today's office workers and call attendants who depend on crystal clear communications.Make more efficient and productive calls with the unparalleled voice clarity of Polycom HD Voice. Improve productivity for office staff and cubicle worker’s via an intuitive larger, color display and easy to use line appearances. Reduce deployment and maintenance costs—the Polycom Zero Touch Provisioning and web based configuration tool makes the VVX 400 series simple to deploy, easy to administer, upgrade, and maintain. Leverage previous IT infrastructure investments—deploy VVX 400 series business media phones on your existing network without needing to upgrade your call control platform. Easily integrate with third- party UC and productivity applications for broad, standards-based, open APIs.