Panasonic KX-TD816 User Manual page 234

6.4 What is This Tone?
Tone 3
• The alarm is being
answered.
• Enter an account code to
turn off the tone.
Tone 4
Message waiting indication
was received.
When you make calls
Busy Tone
Reorder Tone
• The outside line you tried
to seize is not assigned or
denied.
• The wrong account code
was entered.
Ringback Tone 1
Normal ringback tone
Ringback Tone 2
Special ringback tone for DISA
call
Do Not Disturb Tone
The dialled extension is
refusing incoming calls.
While off-hooking
Indication Tones
Tone 1
Call waiting tone (default)
Tone 2
Call waiting tone from outside
234
1 s
5 s
15 s
Appendix