Uniden Packet8 Compatible 5.8GHz Digital VoIP Corded/Cordless Internet Telephone Expandable to a total of 10 handsets - 1 extra handset included. Features: - Built in router and firewall - Easy web-based configuration for advanced features - 100 No. shared caller ID/phonebook memory - Dual keypad - Base and handset speakerphone - Backlit display - Trilingual menus - Dual caller ID display - Clock display - 20 ring tone options - Personal ring feature - Do not disturb setting - Lighted keypad - Last 3 number redial - Mute/hold features - Supports an external analog telephone