Panasonic KX-TDA30 Features Manual page 388

3.1 Capacity of System Resources
Programmer Code
Item
Installer Level Programmer Code
Administrator Level Programmer Code
User Level Programmer Code
388 Feature Guide
KX-TDA30/KX-TDA100/KX-TDA200/KX-TDA600
4 – 16 characters
4 – 16 characters
0 – 16 characters