Grandstream Networks GHP631. Product type: IP Phone, Product colour: Black, Handset type: Wired handset. Lines quantity: 2 lines. Display: LCD, Display diagonal: 8.89 cm (3.5"), Display resolution: 480 x 320 pixels. Voice codecs: AEC, AGC, AJB, CNG, G.711u, G.722, G.723, G.726, G.729A, G.729B, PLC, VAD. Ethernet LAN interface type: Gigabit Ethernet, Ethernet LAN data rates: 10,100 Mbit/s, Wi-Fi standards: 802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
