A timeout lasts 1:00 in a volleyball game.
The coach can can call a timeout anytime when the ball is not in play. He/She only has two timeouts per game, though.
There is the 20 second timeout and a full timeout which is a minute long.
A 'full timeout' is a time out long enough for the network that is broadcasting the game on TV to get an allotment of commercials in. This differs from a '20 second timeout' which is much shorter and usually the network does not show any commercials.
You can call a timeout whenever you would like to.
There is no given time for volleyball
about 5 minutes
Timeout on the floor is a timeout called by a player or coach on either team. An official timeout is a timeout called by the officials and is generally a timeout for a television or radio commercial break.
As long as your heart desires!(: