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Local Area High Speed Networks by Dr. Sidnie Feit

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Baseband Ethernet on Thin Coax Cable (10BASE2)

A new version of coax Ethernet was introduced to overcome some of the problems posed by 10BASE5. This version is built using a lighter, more flexible cable called thinnet (or "cheapernet") and is called 10BASE2. As before, 10 means 10Mbps, and BASE stands for baseband; the 2 represents 200 meters. However, this is the rounded-up value for the actual maximum segment length, which is 185 meters.

Although AUI cables and external transceivers could be used with 10BASE2, a far less costly configuration became the norm. The transceiver function was integrated onto a NIC that connects directly to the coax bus via a Bayonet Neil-Concelman (BNC) T connector, as is shown in Figure 6.6.

Figure 6.6. Ethernet ...

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