- American Telephone & Telegraph User Manual 5.8 GHz Expansion Handset EP590-3

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To replace a handset
If you are replacing a handset on a system that has the
maximum number of registered handsets (eight) or wish
to change the assigned handset number of your registered
handsets, you must first de-register the handsets, and then
re-register all handsets again.
NOTE: A handset must be de-registered, with NOT REGISTERED shown on
the handset screen, before it can be registered to another telephone base.
To de-register a handset
• Press the CENTER NavKey on the handset to bring up
main menu.
• Press the UP or DOWN NavKey or four times for
settings.
• Press the CENTER NavKey to enter into settings
menu.
• Press the UP NavKey once or DOWN NavKey
seven times to select delete registration.
• Press the CENTER NavKey and you will be prompted
to select YES/NO for handset de-registration.
• Press the softkey YES to proceed with de-registration or
NO to cancel.
• After pressing the softkey YES, the screen will remain
blank for a while.
• When the screen shows Not Registered, the de-
registration process is complete. There will not be a
confirmation tone.