"This phone is almost an IP 650 with two line keys knocked off. It has 4 line appearances, a large grayscale display (4x the pixels of the IP 501), lighted buttons for headset, mute, and speaker, lighted line keys, well thought-out hardkeys, and HD Voice. This phone has integrated PoE (IEEE 802.3af) and AC power support. Did I mention that the display is backlit?"
Highlights