Panasonic KX-TD500 User Manual page 199

D
Conditions
• Class of Service
Class of Service (COS) programming determines the extension that can perform this
feature.
• If you hear a reorder tone after dialing 1, your extension is not permitted to execute
"Do Not Disturb (DND) Override" feature by System Programming.
• What if a busy tone is heard after DND override?
The other extension in DND mode is busy.
In this case, you may perform the following features.
— Automatic Callback (Camp-on)
— Busy Station Signaling (BSS)
— Off-Hook Call Announcement (OHCA)
— Whisper OHCA
— Executive Busy Override
Programming References
• System Programming — Installation Manual, Section 4
4.2.3 System - Class of Service
Feature References
Do Not Disturb (DND)
4-84
Station Features and Operation
4.3 Station Features and Operation
— DND Override