AT&T E560-2 - Manual (Page 11)

Replacing a handset
If you are replacing a handset on a system which already has the
maximum number of handsets registered (4), or wish to change
the assigned handset number of your registered handsets, you
must first de-register all handsets, then re-register them again.
To de-register all handsets (E5640/E5643B/E5644B)
• Unplug the power supply from the telephone base.
• Plug in the power supply while pressing and holding the
HANDSET LOCATOR button on the telephone base.
• Continue pressing
HANDSET LOCATOR until the IN USE and
CHARGING indicators are lit. This should take about 10
seconds.
• Release the
HANDSET LOCATOR button.
All handsets will display:
Once the base indicators turn off (may take up to 30 seconds),
the handsets are de-registered from the telephone base, and can
now be re-registered (see page 9).
ENTER BASE ID
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