Appendices
C
C-9
Remote Collision
A collision that occurs on the other side of a repeater.
Since a 10BASE-T Hub is a multi-port repeater with a
"segment" dedicated to each station, 10BASE-T collisions
are remote collisions.
Repeater
A repeater is a layer-1 device that regenerates and
retimes frames.
Router or Gateway
A router is a device that connects subnets together. Any
packets destined for a device on a different subnet are
given the subnet’s router. Routing between subnets can
involve multiple routers. A user’s machine must be
configured to know the IP address of the router for its
subnet in order to communicate with machines on other
subnets. Mis-identified gateways are a common problem
for manually configured IP settings.
RJ-45 Connector
A modular connector used for UTP wiring. The RJ-45
connector has eight conductors to accommodate four
pairs of wires, and it has become the dominant connector
used in Ethernet and Token Ring UTP installations.
Router
A router is a network-layer device that connects networks
using like network-layer protocols. Routers can span
different network topologies. For example, a router can
interconnect two IP subnets. For a router to pass traffic,
unlike a bridge, it must be configured for the desired
protocol. Routers are more difficult to configure but offer
greater security.
RTP (Real-time Transport Protocol)
The protocol used for actual Voice data transmission.
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