The token ring is network access technology based on the principle of communicating in turn, i.e. each computer on the network has the opportunity to communicate in turn. It is a token (a data packet), circulating in a loop from one computer to another, which determines which computer has the right to transmit information.
When a computer has the token it can transmit for a determined length of time, after which the token is passed to the next computer.
In reality, the computers on a "token ring" network are not arranged in a loop, but are connected by a dispatcher (called MAU or Multistation Access Unit) which will give each of them the opportunity to "speak" successively.
