Acorn
Econet
Bridge
At the back of the Bridge are two Econet sockets. The Bridge is used to connect two networks together and it is plugged into each network as if it were an ordinary station or a clock. The Bridge then runs all data transfer between the two networks, known as Network A and Network B.
In Econet, each network must have its own unique number and there are links inside for setting the network number of A and B.