Collisions cannot be avoided. If a collision is detected the transmission has to be repeated. If a collision occurs, the transmitting station recognizes the interference on the network and transmits a bit sequence called jam. The jam helps to ensure that the other transmitting station recognizes that a collision has occurred. After a random delay, the stations attempt to retransmit the information and the process begins again.

 

 


 

 

 

 

 

 

 

Reminder: the collision problem in a Bus-topology