Siemens HiPath 4000 Operating Instructions Manual page 102

Additional functions
Step by Step
> <
DELETE
Reminder
102
then:
[
Select the menu item and confirm.
a Press the On-hook key.
Using timed reminders
Prerequisite: You have saved an appointment. The
saved time arrives.
The handset starts ringing.
c Press the Talk key. The appointment time is displayed.
a Press the On-hook key.
If you do not accept the reminder, the handset
will ring a few more times and "Appoint." will be
displayed before the reminder is deleted.