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108 Pelco Manual C690M-E (11/04)
GLOSSARY
Cat5 Cable Type of cable used on a LAN to connect computers, printers, and
transmitters and receivers to a hub on the network.
Gateway A network point acting as an entrance to another network. Computers
that control traffic on a company’s network or at local Internet service
provider are gateway nodes. Often associated with a router and a
switch.
Internet Protocol The main protocol used on the Internet. Forms—in conjunction with the
Transfer Control Protocol (TCP)—the TCP/IP protocol suite.
IP Address A unique four-byte number that identifies each unit on the Internet or
network. Usually written in dotted-decimal notation with periods
separating the bytes. This address is required to communicate on the
network (for example, 192.168.0.100).
LAN Local Area Network. Multiple computers linked together into a network
to share information within a limited geographic area (such as a building
or a campus) controlled by a network operating system and using a
transport protocol.
Router A physical device that connects multiple LANs. A router knows where to
direct a given packet of data.
Subnet Mask A mask that explains which part of an IP address is the network address
and which part composes the host address. It is usually expressed in
dotted-decimal notation (for example, 255.255.255.192).
Switch Furnishes the actual path in and out of the gateway for given packet of
data.
TCP Transfer Control Protocol.
WAN Wide Area Network. Multiple LANs connected together, usually over a
great distance.