Fanvil X3U. Product type: IP Phone. Product colour: Black. Handset type: Wired handset. Dual Tone Multi-Frequency (DTMF) modes: In-band. Out-of-band. SIP Info. Number of lines: 6. Phonebook capacity: 1000 entries. Volume control: Buttons. Display: LCD. Display diagonal: 7.11 cm (2.8"). Display resolution: 320 x 240 pixels