Fully integrated phone Expandable up to 16 high-quality X16 digital speakerphones (sold separately). Requires the X16 communications server for operation. Connects up to 6 telephone lines with no need for an Internet connection. Backlit interactive blue LCD for easy use. Call waiting/caller ID displays the name and number of incoming calls. Call waiting/caller ID service required from your local telephone company. 12 speed-dial buttons for quick and easy access to frequently-called numbers. Features auto receptionist and voicemail. UL Environment. XBLUE Networks X16 Corded Telephone System, Titanium Metallic is one of many VoIP Systems available through Office Depot. Made by XBLUE.