Aastra M401 User Manual page 34

7.2 PROGRAMMING AN APPOINTMENT REMINDER
You can use your phone as a diary and record your appointment times.
Entering appointment times
On your keypad:
Press the following keys consecutively
Enter the appointment time (between 0000 2359)
example: 5:30 PM = 1730
Hang up.
5
HHMM
5
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