AT&T 1040 User Manual

Page of 74
15
Telephone operation
Basic phone operation
DO NOT DISTURB
When you activate the do not disturb (
DND
function, you will not hear paging tones, voice 
paging, or incoming call rings.
Instead, the 
LINE light flashes to signal an 
incoming call. If you receive an intercom call, the 
[INTERCOM] light flashes, and the number of the 
incoming intercom call appears on the display.
1.  Press 
[DO NOT DISTURB] twice to prevent 
interruptions. The 
DO NOT DISTURB light goes on 
and the screen includes 
DND.
2. Press
 [DO NOT DISTURB] again to resume 
normal call alerts. The 
DO NOT DISTURB light 
goes off and the screen no longer shows 
DND.
Callers will hear very long beeps, the same tone 
as if the system phone is ringing normally.