Panasonic KX-DT521 Quick Reference Manual page 3

KX-DT543
KX-DT546
KX-DT590
A LCD (Liquid Crystal Display):
KX-DT521: 1 line, KX-DT543: 3 lines, KX-DT546: 6 lines
B Message/Ringer Lamp:
When you receive an intercom call, the lamp flashes green,
and on an outside call, the lamp flashes red. When someone
has left you a message, the lamp stays on red.
C Flexible CO Buttons: Used to seize an outside line or perform
a feature that has been assigned to the key.
Location of Controls
7