The IEEE 802.5 Token Ring protocol provides a deterministic method of shared media access. Two
standards exist, one with 4-Mbit/sec operation and the other with 16-Mbit/sec operation. One station,
designed the active monitor, initiates a short Frame (token) around the ring. Stations sequentially
capture the token and are allowed to access the ring until Transmission is completed or the token
time-out has expired. The token is then passed to the next station.