. The concentrator reduces the number of transmission lines because it generally forms the starting point of a star topology. Terminal equipment, LAN segments
, or rings can be directly connected to it. The concentratorincreases the connection capacity of a transmission line and enables traffic load balancing, if necessary by means of intermediate storage.
Depending on the area of application, a distinction is made between working group hubs, department hubs or company hubs and those used in distribution rooms and in the network centre.