Yealink SIP-T43U. Product type: IP Phone, Product colour: Grey, Handset type: Wired handset. Dual-Tone Multi-Frequency (DTMF) modes: In-band, Out-of band, SIP info. Lines quantity: 12 lines, Phonebook capacity: 1000 entries. Display: LCD, Display diagonal: 9.4 cm (3.7"), Display resolution: 360 x 160 pixels. Voice codecs: AGC, AJB, AMR-NB, AMR-WB, G.711Mu, G.711a, G.723.1, G.726, G.729ab, OPUS, PLC, VAD, iLBC