Aastra DT590 User Manual page 37

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DT590
Note:
Callbacks can be activated on several extensions at the
same time.
If all external lines are busy when the Yes key is pressed after
6#
dialing the external number:
Press.
Note: France, Finland and Sweden, press
Press to finish the procedure.
When an external line becomes free you will be called back (recall
ring signal). You have to answer within eight seconds, otherwise the
Callback service is cancelled. While waiting for the Callback, you
can make and receive calls as usual.
Press when you are called back.
The system calls the external number.
Note: Only one Callback can be activated on a busy
external line.
Cancel any single Callback
Dial and enter the extension number.
Note: To cancel a single Callback on a specific external
line, dial the digit or digits to get a line instead of the
extension number.
Press.
Wait for the call timer to start in the display.
Press to finish the procedure.
Cancel all Callbacks
Dial.
Press.
Wait for the call timer to start in the display.
Press to finish the procedure.
Outgoing Calls
5 #
.
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