The Cisco IP Phone 8800 Key Expansion Module extends the capabilities of Cisco IP Phone 8851 and 8861 models with additional buttons and a color LCD display.
This key expansion module adds 18 physical keys with access to 18 additional keys, using the page keys, for a total of 36 additional keys. You can connect up to three modules to the IP Phone 8861 and up to two modules to the IP Phone 8851.
The 8800 expansion module comes with a foot stand and all necessary hardware to connect it directly to the base device in the traditional side-by-side fashion. For two or more expansion modules a Power Cube 4 for each module is required.