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4.3 Tone
152 User Manual
While off-hook
When talking to an outside party
When setting the features or programming
Ringback Tone 2
Special ringback tone for DISA
call
Do Not Disturb (DND)
Tone
The dialed extension is
refusing incoming calls.
Indication Tones
Tone 1
Call waiting tone
Tone 2
A call is on hold longer than
the specified time.
Warning Tone
This tone is sent 15, 10 and 5
seconds before the specified
time for disconnection.
Confirmation Tones
Tone 1
The feature setting was set
successfully.
Tone 2
Before receiving a page
through an external speaker
1 s
15 s
1 s
1 s