Communications blackout
A communications blackout was a term used to describe a total stop of all incoming and outgoing communications.

In 2268, the  maintained a communications blackout while on a top secret diplomatic mission. ()

In 2369, the 's  requested a communications blackout while they performed an experiment. ()

In 2373, Kira Nerys ordered the  to maintain a communications blackout as the ship confronted a Dominion fleet. ()

In 2374, Ferenginar had a communications blackout, convincing Rom that the planet had been conquered by the Dominion. ()

In 2375, Julian Bashir was unable to contact Deep Space 9 while attending a medical conference held on Romulus because of an imposed communications blackout. ()

See also 
 Radio silence

External link 
 
Communications technology
Events