AASTRA DT4x2 for MD Evolution User Guide EN - Manual (Page 37)

37 MD Evolution – Cordless DT412 / DT422 / DT432
Incoming Calls
Call Pick-Up Individual
When your extension is idle, you may also answer a call that is
ringing for another extension, without having to change extensions. 13
Dial the prefix “13” for the call pick-up service.
å
Next, directly dial the directory number that is ringing
æ
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).