AASTRA 7446ip (5446ip) for MX-ONE User Guide EN - Manual (Page 30)

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O UTGOING C ALLS
Note: Instead of dialing the number using the keypad, you can use
speed dialing keys. For more information, see 6.6 Speed Dialing
on page 37. (For SIP phones you always have to tap the Call
button in order to initiate a call.)
6.1.3 Called Extension has Message Diversion Enabled
When a caller is calling to a party which has message diversion active,
the caller's display shows the absence information and the caller can
manually request to be diverted by pressing the soft key or the * key.
Otherwise the call will be terminated after a timeout.
6.2 When You Receive a Busy Tone or No
Answer
When the number you have called is busy or does not answer, you have
several options available: try again later, or order automatic callback, call
waiting, or intrusion.
6.2.1 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.
6.2.1.1 Ordering Callback
To order callback, do the following: