Yealink SIP-VP59. Product type: IP Phone, Product colour: Grey, Handset type: Wired handset. Dual-Tone Multi-Frequency (DTMF) modes: In-band, Out-of band, SIP info. Phonebook capacity: 1000 entries. Display: IPS, Display diagonal: 20.3 cm (8"), Display resolution: 1280 x 800 pixels. Voice codecs: G.722, G.722.1, G.722.1C, G.723.1, G.726, G.729A, G.729B, iLBC