The phone offers an easy-to-use interface and provides a traditional telephony-like user experience
White backlit, greyscale, 3.5” 396×162 pixel-based display on the IP Phone 7821, 7841 and 7861
The handset is a standard wideband-capable audio handset (connects through an RJ-9 port) for the IP Phone 7821, 7841 and 7861
The analog headset jack is a standard wideband-capable RJ-9 audio port for the IP Phone 7821, 7841, and 7861
The phone supports backlit indicators for the audio path keys (handset, headset and speakerphone), select key, line keys, and message waiting
A volume-control toggle provides easy decibel-level adjustments of the handset, monitor speaker, and ringer
Full-duplex speakerphone allows gives you flexibility in placing and receiving calls. For added security, the audible dual tone multifrequency (DTMF) tones are masked when the speakerphone mode is used
The display is easy to view and the buttons and keys are easy to use. The two-position foot stand supports viewing angles of 30 degrees and 45 degrees; you can remove the foot stand for wall mounting, with mounting holes located on the base of the phone
The phone can be installed on a wall using optional wall-mount kit (available separately)
The hookswitch can be controlled electronically with a third party headset connected to the auxiliary port
The phone supports IEEE 802.3af PoE (Class 1); power consumption does not exceed 3.84 watts