means that all eight wires of a standard Category 3 UTP bundle must be used to achieve a
data rate of 100 Mbps. This is not feasible for sites using two pairs of Category 3 UTP for
their 10BASE-T networks if the other two pairs of wire are being used for telephone con-
nections (or for additional Ethernet connections). For 10BASE-T LANs using two pairs of
Category 5 UTP, all is not well either. Cable installation requirements for 100BASE-TX
are extremely stringent requiring all components (from connectors to patch panels to num-
ber of twists per inch) to be certified Category 5 compliant. Many so-called Category ...
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