Panasonic KX-TDA100D Features Manual page 36

1.1.3 Incoming Call Indication Features
Feature Guide References
3.1 Capacity of System Resources
User Manual References
3.1.3 Customising the Buttons—To distinguish the ringing tones for each CO, ICD Group, PDN, SDN, or
INTERCOM button (Digital proprietary telephone only)
36 Feature Guide