The Phone Services XML schema for CCM 7.0 lists an XML element called "KeyItem". It looks like these work like "SoftKeyItem" but allow you to bind a URI to a physical button on the keypad, or a navigation button.
These elements aren't mentioned in the main documentation. I've tested them on a 7961 with firmwares 8.3.5 and 8.4.1, and the elements are accepted (no XML Parser Error) but they don't seem to do anything.
Does anyone know anything about these elements? Can they be used? Are they only supported on some models, or are they not supported at all?