Panasonic KX-TD816C User Manual page 30

DPT Overview
SELECT Button
Used to select the displayed function or to call the displayed phone number.
SHIFT Button
Used to access the second and third level of Soft Button functions.
Soft (S1 through S3) Buttons
Used to perform the function or operation that appears on the bottom line of the display.
SP-PHONE (Speakerphone) Button
Used for a hands-free speakerphone operation.
TRANSFER Button
Transfers a call to another extension or external destination.
VOLUME Control Button
Used to adjust the volume of the handset receiver, headset, ringer and speaker; it also adjusts
the display contrast. Refer to 1.1.6 Initial Setting for KX-T7200 Series.
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