English to German Marketing Computers: Systems, Networks

The backbone network is an important architectural element for building enterprise networks. It provides a path for the exchange of information between different LANs or subnetworks. A backbone can tie together diverse networks in the same building, in different buildings in a campus environment, or over wide areas. Generally, the backbone's capacity is greater than the networks connected to.
So weit, so gut. Aber wie ist der deutsche Fachausdrucka?