AT&T E598-1 - Manual (Page 5)

4
Getting started
Replacing a handset
If you are replacing a handset on a system that has the maxi­
mum number of registered handsets (four) or wish to change the
assigned handset number of your registered handsets, you must
first follow the below steps to de­register the handsets, then reg­
ister all handsets again (page 2­3).
To de-register all handsets
• Press and hold
HANDSET LOCATOR on the main telephone
base E590/E5902B/E5903B/E59/E592B/E593B/E594B/
E592/E5922B/E5923B/E5924B/E600/6002B/E602B/E603B/
E604B/E383B until the
IN USE
light starts to turn on then flash
(about 0 seconds), then release the HANDSET LOCATOR but­
ton.
• Press and release HANDSET LOCATOR again. The IN USE
light will turn off and in a few seconds, all handsets will be
de­registered.
• All handsets will show NOT REGISTERED if de­registration was
successful.
• To re­register the handset to the telephone base, follow the
registration instructions on pages 2­3.
NOTES:
. If the de­registration process was not successful, you may need to reset the
system and try again. To reset: pick up any registered handset and press the
PHONE/
FLASH
button, then press the OFF/
CLEAR
button and place the
handset back into the telephone base.
2. You can only de­register handsets when the handsets and the telephone base
are not being used.
NOT REGISTERED