Panasonic KX-NCP500 Operating Manual page 219

Tone 4
Message waiting indication was
received.
When you make calls
Busy Tone
Reorder Tone
The CO line you tried to seize is not
assigned or denied.
Ringback Tones
Tone 1
Tone 2
Do Not Disturb (DND) Tone
The dialed extension is refusing
incoming calls.
While off-hook
Indication Tones
Tone 1
Call waiting tone
Tone 2
A call is on hold longer than the
specified time
Document Version 2010-08
1 s
1 s
1 s
1 s
1 s
1 s
15 s
15 s
Operating Manual
4.3.1 Tone
219