CISCO 7821 IP phones

Cisco 7821. Product type: IP Phone, Product colour: Black, Silver, Handset type: Corded handset. Line quantity: 2 lines. Volume control: Digital. Display diagonal: 8.89 cm (3.5"), Resolution: 396 x 162 Pixels. Voice codecs: G.711a, G.722, G.729A, G.729B, iLBC