HP 100BaseT User's Guide download pdf (Page 44)

HP Hub-8TXE Installation and Reference Guide

Glossary 3

Shielded Twisted-Pair (STP)

Twisted-pair wire covered with an external aluminum-foil or woven-copper shield

designed to reduce excessive noise pick up or radiation. The STP cable refered to in

this manual is also sometimes called screened twisted-pair (ScTP). Its impedance is

100

W and has the same pin assignment as UTP. This cable should not be confused with

the older 150

W cable type designed by IBM.

Star Topology

Physical connections for this hub are limited to a star configuration (i.e., similar to a hub

and spoke arrangement). This topology also requires that only one path exists between

any two nodes, and that data transmitted by any node is concurrently available to all

other nodes within the same local network (i.e., immediate collision domain).

Unshielded Twisted-Pair (UTP)

Cable composed of two insulated wires twisted together to reduce electrical

interference; used in common telephone cord.

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HP 100BaseT User's Guide Page 44