
1) PEACE SIGN 2) Sign on a hotel-room door
Found on
https://www.crosswordclues.com/clue/do-not-disturb
[telecommunications] The Do Not Disturb or (DND) function on most PBX or PABX systems prevents calls from ringing on an extension for which DND is activated. Some Do Not Disturb (DND) attributes include directing the call to a preassigned extension (like a secretary or assistant), busy signal, DND signal, or recorded message generated by th...
Found on
http://en.wikipedia.org/wiki/Do_Not_Disturb_(telecommunications)

DND or Do not disturb is a standard phrase traditionally seen on doorknob hangers in group accommodations, such as hotels or college dorms. These are known as `Do not disturb` signs. It may also refer to: ...
Found on
http://en.wikipedia.org/wiki/Do_not_disturb
No exact match found.