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HP Hub-8TXE Installation and Reference Guide
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
and has the same pin assignment as UTP. This cable should not be confused with
the older 150
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.
Glossary
3
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