Each display phone has it's own time/date, there is
no systemwide time/date.
until the item you want to change flashes.
to advance or reverse the Time, Day or Date.
When you have the correct Time, Day or
Date, press Set.
If you only want to set a particular item,
such as Time, Day, or Date, press Exit
after programming it.
you have programmed them all (Time, Day and Date) just
not Exit. (If you press Exit,
you will see four zeroes in the place of the Date. This
is for the Timer. Press Exit
again to display the corrected Time, Day and Date.)