Glossary
G-5
out-of-band Signalling between a network management station and a network
management module over a telephone line rather than over the
network.
packet A predefined unit of data that is moved from source to destination
through a packet-switched network. The type of packet depends
upon the protocol used.
partition Electronic isolation of an Ethernet device from network
communications.
partition uplink A front panel LED on the AsantéHub 1012; it reflects the partition
status of the uplink to the hub.
physical layer Layer 1, the lowest layer in the OSI model; it provides the transparent
transmission of bit streams, including relaying through different
media.
port An interface location on a computer or device that can send and
receive data. A port acts as an input and/or output device.
PROM Programmable Read-only Memory. A type of memory that allows data
to be written into the device with hardware called a PROM
programmer.
punch-down block Device for wiring twisted-pair cables between communication devices
and pre-existing links installed behind building walls.
RJ-11 A four-contact or six-contact modular plug commonly used in
telephones.
RJ-45 An eight-contact modular plug used for data communications.
RS-232 The Electronic Industries Association (EIA) standard for the 25-pin
serial interface used to connect personal computers or terminals to
communications equipment such as modems.
Simple Network SNMP. A set of rules for performing network management
Management functions. A standard based data structure that allows open
Protocol management capabilities for all hardware, regardless of
vendor.
SNMP See Simple Network Management Protocol.
star network A network topology that uses a central computer surrounded by
terminals. Messages are transmitted directly from the node to the
central computer.
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