Phone
Line/
Programmable
Buttons
Any unused line button is
programmable
Line/
Programmable
Buttons
Any unused
line button is programmable
MLS-12D/MLS-12
Phone (display on
Programmable
Buttons
(without lights)
Line/
Programmable
Buttons
Any unused line button is
programmable
Line/
Programmable
Buttons
Any unused line button is
programmable
Figure 2-5. Programmable Buttons and Labeling Sheets on System Phones
Programming