Keyboard Expansion Option
The keyboard of a ROLMphone 600 series telephone can be expanded with an option providing 20 addi- tional feature or line keys and status lights. The Key- board Expansion Option (KEO) attaches to the right side of the telephone through a special connector and bracket. Before the option is installed, the telephone must be configured for it at the CBX. For more infor- mation, see your CBX system administrator.
