Tadiran Telecom FlexSet 280 User Manual page 224

Distinctive Dial Tone
(DDT)
Inside Dial Tone
Key Click
Outside Dial Tone
Reorder Tone
Ringback Tone
Second Ringback
Tone
Tones (cont.)
A p p e n d i x B - T o n e s ( c o n t . )
The Distinctive Dial Tone (DDT) indicates that certain features are in use at your telephone, for
example, when you have programmed your telephone not to receive calls, with either Call Forward
All, or Do Not Disturb, and you lift the handset. DDT is also heard between patterns of digits when
dialing certain features, for example, Account Code feature. When the following features are
applied at your telephone, the distinctive dial tone will be heard when the handset is lifted:
After off-hooking (lifting your handset from idle) or pressing speakerphone (SPKR) key.
When defined for the FlexSet, a tone heard when pressing a number on the dial pad.
When connected to an external (trunk) line.
A tone you will receive if you have tried to access a denied feature, or you have misdialed, etc., or:
• You have stayed off-hook too long before dialing
• The station you have called has not answered in time. Perform on-hook and call later
• The station you have called is in Do Not Disturb status
A tone heard when the destination you have dialed is ringing.
Indicates that the destination you have dialed is busy, and your call is waiting to be answered.
• Call Forward All
• Do Not Disturb
• Messages Waiting
• Secondary COS
B-2 FlexSet 120/280 User Guide