Editing Medium Attachment Unit (section)

===Services provided by MAUs===
In addition to receiving and transmitting network data, MAUs perform [[Jabber (networking)|jabber]] detection, in which they remove from the network any node that continuously transmits for longer than the maximum-length packet. This is done to prevent network disruption. Jabbering indicates a possible problem with the node's [[Network interface controller|NIC]].

MAUs also help troubleshoot problems with signal quality and integrity. They can test for signal quality errors, which can detect silent failures in the circuitry, as well as perform link integrity functions, which can detect breaks in wire pairs. Both these tests assist in fault isolation.

[[CSMA/CD|Collision detection]] and loop-back functions direct transfer through the MAU.