Siemens 300 Series - Figure 1-7. Keyboard Expansion Option (KEO)

1–10 ROLMphone 300/600 User Guide
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.
Figure 1–7. Keyboard Expansion Option (KEO)