| COLOR | GRAY/GREY BASE |
| DC VOLTAGE RATING | 48.0 VOLTS NOMINAL FIRST OPERATING POWER RQMT |
| FEATURES PROVIDED | WIRELESS TELEPHONY |
| INCOMING CALL SIGNAL DEVICE | RINGER |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | IP PHONE 7821 SUPPORTING 2 LINES |
| MATERIAL | PLASTIC CASE |
| OVERALL DEPTH | 28.0 MILLIMETERS NOMINAL |
| OVERALL HEIGHT | 207.0 MILLIMETERS NOMINAL |
| OVERALL WIDTH | 206.0 MILLIMETERS NOMINAL |
| SPECIAL FEATURES | ALWAYS-ON; ADVANCED IP TELEPHONY FEATURES; FULLY PROGRAMMABLE LINE KEYS; HANDLES MULTIPLE CALLS FOR EACH DIRECTORY NUMBER; FULL-DUPLEX SPEAKERPHONE; FIXED FUNCTION KEYS: SERVICE, MESSAGING, DIRECTORY, HOLD/RESUME, TRANSFER, CONFERENCE; WHITE BACKLIT, GREYSCALE, 3.5IN. DISPLAY; BLACK BEZEL; DUAL-POSITION FOOT STAND; WALL MOUNTABLE |
| STYLE DESIGNATOR | PUSH BUTTON, WITH BUTTONS FOR SPECIAL FUNCTIONS |