Aastra DT692 User Manual page 42

USER GUIDE
Note: 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.
42 1424-EN/LZT 103 088 Uen H 2014-04-03