Works with the following Cisco models: 6900 Series, 8900 Series, 9900 Series, 9951, 9971 with Message Light
"Slim Line" Type. This handset will work on a charcoal phone in this series, but the color will not match.
(Not for the 8800 series...those handsets are more square on the edges.)
Recommended handset cords:
25' - HS CORD 13500