Gigaset C530 IP Owner's Manual page 74

Changing the internal number of an internal participant
The next unassigned internal number (1-6) is automatically assigned to the handset as it is
registered. If all the slots are occupied, the most recently registered handset is deregistered as
soon as it is in idle status. You can change the internal numbers of all registered handsets (1–6).
u
Open list of handsets. Your own handset is indicated by
¤
q Assign Handset No.
r
¤
q Select or enter the internal number.
¤
Switch to another handset, if necessary.
¤
Save
You will hear the error tone if an internal number has been assigned twice.
¤
Repeat the procedure with a free number.
q
¤ ¤
OK Select the handset, if necessary.
¤
¤
f
. Options
r
Select number etc.
Multiple handsets
¤
OK
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