X-Wire
August 30, 2007
In 1977 the Xerox Star team began working on X-Wire, a 20 Mbps version of the PARC Ethernet XWire Draft Spec. The speed of X-Wire was reduced to 10 Mbps because the higher speed reduced the length of a coax cable segment to below 500m, and also because the typical spacing for the transceiver taps produced undesirable reflections. The 10 Mbps X-Wire became the starting point for the DIX Ethernet Specification.
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