6.5. 100BaseT2

100BaseT2 is the latest member of the 100BaseT 100-Mbps Ethernet group. The 100BaseT2 IEEE activity was established in March 1995, and the standard was approved in March 1997. 100BaseT2 is the only Ethernet standard that supports a 100-Mbps transmission rate over two pairs of Category 3 twisted pair cabling. If the cable has more than two twisted pairs, it also permits the additional pairs to carry other services such as digital phone, 10BaseT, or more 100BaseT2 connections. Extensive digital signal processing techniques, such as fractionally spaced adaptive channel equalization, echo cancellation, and NEXT noise cancellation, are utilized to enable a very high transmission throughput over this voice-grade Category 3 twisted pair ...

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