In packet networking
, a multiport repeater
is the simplest multi-port active device in use. It has multiple input
(I/O) ports, in which a signal
introduced at the input of any port
appears at the output of every port except (usually) the original incoming. With multiple computers, the network slows, due to packet collisions. Lower prices of network switches
in the late 20th century made multiport repeaters rare.
A multiport repeater usually performs regenerative functions, i.e., it reshapes the digital signals.