Fast EtherHub-12s User’s Guide
Shielded Twisted-Pair (STP)
100W Category 5 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 100Wand has the same pin assignment as UTP. This cable should not be confused with the older 150Wcable 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).
Station Port
The MDI-X port can be used for connecting the hub to any device that has a standard network interface (e.g., workstation, server or router). For port 12, the selector switch must be set toMDI-X. (This port can also be connected to an MDI port on another compatible hub or a switch.)
Unshielded Twisted-Pair (UTP)
Cable composed of insulated wires twisted together to reduce electrical interference; used in common telephone cord.
