Firmware Release 12.0(1) introduces support for two new key expansion modules:
Both expansion modules feature a dual LCD screen, 14 line keys, 2 pages, and are configured with a one-column display. They also have a light gray background that replaces the existing blue background found on the current key expansion modules.
Session Line Mode and Enhanced Line Mode are also supported on the new expansion modules.
The Cisco IP Phone 8851/8861 Key Expansion Module supports the Cisco IP Phone 8851, 8851NR, and 8861 only. The Cisco IP Phone 8865 Key Expansion Module supports the Cisco IP Phone 8865, and 8865NR only.
The Spare Wallmount Kit for Cisco IP Phone 8800 Series with Single 28-key Key Expansion Module is required for attaching a phone with the new expansion modules to a wall. The phones with the new expansion modules do not fit the previous wall mount kit.
Cisco Unified Communications Manager 10.5(2) or later is required for the new expansion modules to function.