Panasonic KX-NT543 Quick Reference Manual page 12

Location of Controls
R (HOLD): Used to place a call on hold.
S CANCEL: Used to cancel the selected item.
T (INTERCOM): Used to make or receive intercom calls.
U
(SP-PHONE [Speakerphone]): Used for performing
hands-free operations.
V Microphone: Used for hands free conversations.
W Flexible CO Buttons: Used to seize an outside line or perform
a feature that has been assigned to the key.
X NEXT PAGE Key: Used to switch the page for the Self
Labelling feature. (KX-NT560 only)
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