Panasonic KX-NCP500 Features Manual page 215

Feature Guide References
1.1.1.6 Intercept Routing
1.1.1.7 Intercept Routing—No Destination
1.3.1 Call Forwarding (FWD)/Do Not Disturb (DND)
2.2.1 Class of Service (COS)
User Manual References
1.2.8 To Access Another Party Directly from Outside (Direct Inward System Access [DISA])
1.2.9 Setting Your Telephone from Another Extension or through DISA (Remote Setting)
1.17.6 Direct Inward System Access (DISA)
Feature Guide 215