GE dect 6.0 - Manual (Page 40)

Do not disturb
36
Telephone base DND
You can program the telephone base to silence during the time
you set. This setting is independent to cordless handset, setting
programmed on the telephone base does not apply to other system
handsets.
To program the DND time for telephone base
1. Press
.
2. Press / to select PROGRAM DND and then press
.
3. Press / to select the desired option and then press
to confirm.
ONE TIME: The telephone silences once during the set time.
DAILY: The telephone silences daily during the set time.
OFF: Turn DND off (settings completed).
4. Enter the desired start time. For example, 9:30 should be entered
as [0], [9], [3], [0]. Press / to select AM or PM (if you
have selected 12 HOUR for time format) and then press to
confirm.
5. Enter the desired start time. For example, 7:30 should be entered
as [0], [7], [3], [0]. Press / to select AM or PM (if you
have selected 12 HOUR for time format) and then press to
confirm.
NOTE: When global DND is turned on, the telephone base will continue to be in DND mode
after the set DND time on the telephone base ends.