Panasonic KX-TA1232 Programming Manual page 184

General Programming
[003] Extension Number Set, [118] Voice Mail Extension Number Assignment and
[124] Phantom Extension Number Assignment. The default of each extension number is
as follows:
[003] Extension Number Set
101 through 132
[118] VM Extension Number Assignment
165 through 172
[124] Phantom Extension Number Assignment
Not assigned.
• You cannot leave an entry empty.
Features Guide References
Floating Station
184 Programming Guide