Ericsson DT412 User Manual page 36

Incoming Calls
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36
To restore Parallel Ringing
æ
Dial.
Press.
Wait for the call icon to stop flashing.
æ
Press to finish the procedure.
Notes:
U.K., dial
If you want to restore Parallel Ringing for all phones defined
in the list, follow the procedure for restoring the function
from the phone with the main extension number and enter
the number of the answering position.
If you want to restore Parallel Ringing for one specific phone
in the list only, follow the procedure for restoring the function
from this phone and enter its extension number.
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DT412/DT422/DT432