Repeater for interfacing between twisted pair lines

摘要

In a network with several nodes interconnected by a line where communications occur by transmitting packets over the line and where the end of a packet is signified by the transmission of a first pulse having a predetermined duration and a polarity. A second pulse following the first pulse is transmitted onto the line. It is of an opposite polarity to the first and has a duration approx. equal to that of the first pulse. The line is clamped following the second pulse. Preferably, the clamping is terminated before the next packet is transmitted. The transmitting onto the line occurs from a pair of terminals and the clamping comprises connecting together the pair of terminals.