AT&T System 25 - Manual (Page 35)

Display Functions
The button provides access to special features built into
your display unit. The buttons at the top of the telephone (next
to the display screen) control a clock, calendar, 60-minute timer,
and an alarm.
When you press the screen displays whatever function
you select next. Your display will remain in the “Local” mode
until you either place a call, receive a call, or press
again.
Setting the Clock, Date, or Alarm
1
2
3
4
5
Press
The Clock/Calendar Screen appears on the display.
Using the Timer
1
2
3
4
5
6
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