Aastra DT412 User Manual page 37

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MD Evolution – Cordless DT412 / DT422 / DT432
Call Pick-Up Individual
When your extension is idle, you may also answer a call that is
13
ringing for another extension, without having to change extensions.
Dial the prefix "13" for the call pick-up service.
Next, directly dial the directory number that is ringing
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Press to call the selected number.
Note: Certain extensions (such as yours) may possibly be
equipped with permanent protection against call pick-up. If
this is the case, this service will obviously be refused on
these extensions (and vice-versa).
Incoming Calls
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