Panasonic KX-TC1851ALB Operating Instructions Manual page 30

" Using the Caller List
To erase all entries in the Caller List
Before erasing all entries, make sure that "0 new call" is displayed.
1
Lift the handset off the base unit and
(›) (‹)
press or
(CLEAR)
2 Press
(›) (‹)
3 Press or
FWD/EDIT (fl)
4 Press
(CLEAR)
.
≥A beep sounds and all entries are erased.
≥The handset will return to the standby mode.
30
to enter the Caller List.
.
to select "All clear".
(Yes key) or
0 new call
1=Directory
4 3
Exit
1All clear
1=Yes
4 3
All clear