When a station wishes to transmit, it must wait for to ken 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 in terrogates 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.}