AASTRA 7446ip (5446ip) for MD Evolution User Guide EN - Manual (Page 34)

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5.2 When You Receive a Busy Tone or No Answer
When the number you have called is busy or does not answer, you can try
again later, or order automatic callback.
5.2.1 Callback
When the number you have called is busy or does not answer, you can request
automatic callback. You can only have one callback on a busy external line
activated at the same time.
While you are waiting for a call back answer, you can make and receive calls
as usual.
You can request automatic callback in the following cases:
If the extension you have called (in your exchange or in your private
network) is busy or does not answer. You can have several callbacks
activated at the same time.
(Available in H.323 phones only) If all external lines are busy. You can
have only one callback on busy external line activated at the same time.
As soon as the extension or line becomes free (or, when there is no answer,
when the extension has been used), you will be called back.
Note: When you return to the office, you can tell the system that you are
present by lifting the handset and immediately replacing it.
5.2.1.1 Ordering Callback
To order callback, do the following:
1 Tap the Callback button.
2 Replace the handset when the callback indicator icon is turned on.
3 When the phone rings, lift the handset (or press the loudspeaker button to
use the speakerphone). You will hear the connection tone.
5.2.1.2 Answering Callback
As soon as an external line becomes free, you will be called back. Then lift the
handset (or press the loudspeaker button to use the speakerphone). You will
hear the connection tone. You have to answer within 8 seconds, otherwise the
callback is cancelled. When you answer, the system calls the number you
have requested for callback
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