![](http://pdfasset.owneriq.net/f/9e/f9ea5375-911c-436a-b3d0-c6a023f00761/f9ea5375-911c-436a-b3d0-c6a023f00761-bg25.png)
MLS-34D
Phone
Line/
Programmable
Buttons
Any unused
line button is
programmable
MLS-18D Phone
Line/
Programmable
Buttons
Any unused
line button is
programmable
MLS-12D/MLS-12
Phone (display on
MLS-12D only)
Programmable
Buttons
(without lights)
Line/
Programmable
Buttons
Any unused
line button is
programmable
MLS-6 Phone
Line/
Programmable
Buttons
Any unused
line button is
programmable
Figure 2-5. Programmable Buttons and Labeling Sheets on System Phones
Programming 2-19