Got another phone and need to program it so it will work how do I do this

First be sure the handset battery is well charged as a weak
battery will interfere with the registration process.

Then try the following ( 'works for the D1680, D1481, and similar):

( I ) Deregister the handset:

Press and hold the [END] and [ # ] keys at the same time,
after a few seconds the display will say
"System Reset, Deregister Handset"
press [SELECT]
scroll to "Base Unavailable"
press [SELECT] (chirps) press [END]
display reads "Place in base..."

( II ) Now, to re-register the handset:

Set the handset into the base cradle and wait,
after ~30 seconds the handset should display
"Handset #" and be good to go...

...or it will display "Registration Failed"
If "...Failed", try from ( I ) again.

Good luck!
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