Fast EtherHub-12s User’s Guide
Product Overview 1-3
With automatic partitioning and reconnection, any port is automatically
isolated if excessive collisions occur on it. When the condition is corrected,
the port is automatically reconnected.
With the jabber lock-up function, the hub automatically stops transmission
of abnormal Ethernet frames that may cause data loss for all network users.
(Jabber refers to abnormal Ethernet frames which are much too long and
may come from a malfunctioning Ethernet card.)
With automatic polarity detection, the hub recognizes and adjusts for
attached cable assemblies which may be wired with incorrect polarity on the
receive pair.