Ericsson Dialog 3413 User Manual page 23

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Callback
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Dialog 3413
If all external lines are busy (after dialling the digit or digits to get a
line):
Press
Note: You can also press:
Dial the external number and press
Replace the handset to finish procedure
When an external line becomes free you will be called back (recall
ringing signal). You have to answer within eight seconds, otherwise
the Callback service is cancelled.
Lift the handset 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
Press and dial 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
When You Receive a Busy Tone
(see display).
CBack
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