| Ring, packet switching, connectionless, baseband |
| Unidirectional transmission, token circulates at full speed |
| Token may be either free (no data) or busy (data attached) |
| Station wishing to transmit waits for a free token. It sets it to busy and attaches data with header |
| The addressee copies the data and sets "data copied" bit |
| Originating station sets token to free and removes data |