YEALINK SIP-T31G IP phones

Yealink SIP-T31G. Product type: IP Phone, Product colour: Grey, Handset type: Corded handset. Line quantity: 2 lines, Phonebook capacity: 1000 entries. Display: LCD, Display diagonal: 5.84 cm (2.3"), Resolution: 132 x 64 Pixels. Voice codecs: G.722, G.729, AGC, G.729A, AJB, PLC, G.711Mu, VAD, G.711a, G.723.1, G.726, iLBC, CNG, OPUS. Ethernet LAN interface type: Gigabit Ethernet, Ethernet LAN, data transfer rates: 10,100,1000 Mbit/s, Network standard: IEEE 802.3af, IEEE 802.1p, IEEE 802.1Q, IEEE 802.1x