Panasonic KX-TD1232 Program Manual page 252

General Programming
• You set the extension numbers in program [003] Extension Number Set, voice mail
extension numbers in program [118] Voice Mail Extension Number Assignment,
phantom extension numbers in program [124] Phantom Extension Number Assignment
or floating numbers, DISA (Direct Inward System Access) and extension group in program
[813] Floating Number Assignment.
Features Guide References
Direct In Lines (DIL)
Direct Inward System Access (DISA)
Lunch / Break Service
Night Service
252 Programming Guide