• When a station wishes to transmit, it must wait for
token to pass by and seize the token.
– One approach: change one bit in token which transforms it
into a “start-of-frame sequence” and appends frame for
transmission.
– Second approach: station claims token by removing it
from the ring.
• Frame circles the ring and is removed by the
transmitting station.
• Each station interrogates passing frame, if destined
for station, it copies the frame into local buffer.
{Normally, there is a one bit delay as the frame
passes through a station.}