The Fanvil X3U is an entry-level Gigabit IP Phone that does not compromise features and quality. The X3U supports 6 SIP lines and has 3 line keys on the main display. Fanvil X3U Entry Level Gigabit Phone boasts a 2.8 inch color-screen display, dual gigabit ports and supports EHS headsets. The X3U is perfect for deployments where basic phone features are required, but a stylish and elegant design are needed. The X3U has HD audio on both the speakerphone and the handset so that you can be certain that calls will be clear and crisp.