AT&T 410 820 - Manual (Page 11)

Programming Instructions
ASSIGNING CUSTOM FEATURES TO BUTTONS
Programming is the process of customizing your phone. You can
select features that meet your present needs and change the
features when your needs change.
You can assign any custom feature listed below to any spare but-
ton on your telephone.
Here is the procedure:
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Label the button that you want to program.
Slide T/P switch toward you (hear ringing).
Touch the button to be programmed.
Dial feature code (see below).
Enter additional numbers (if required).
When you are finished programming custom feature but-
tons, return T/P switch to center position.
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