3Com 3CB9E7 - CoreBuilder 9000 Chassis Switch Getting Started Manual page 120

120 G
LOSSARY
cell
An ATM Layer protocol data unit (PDU) that has fixed,
rather than variable, length payloads.
client/server
A single-user computer that requests application or
network services from a server.
CoS
Class of Service. This feature differentiates traffic into
classes and assigns prioritization to those classes.
collision
Overlapping transmission of two or more nodes onto
media. All data is unusable.
connection
The concatenation of ATM Layer links to provide an
end-to-end information transfer capability to access
points.
connectionless communications
A form of packet-switching that relies on global
addresses in each packet rather than on predefined
virtual circuits.
connection-oriented communications
A form of packet-switching that requires a predefined
circuit from source to destination to be established
before data can be transferred.
Data Communications Equipment (DCE)
The equipment that establishes, maintains, and
terminates a data transmission connection.
Data Terminal Equipment (DTE)
The equipment that is connected to the common
carrier communications facility. The DTE is typically a
computer system or terminal.
EMC
Enterprise Management Controller module. Provides
standby controller functions for an Enterprise
Management Engine (EME) in the CoreBuilder 9000
chassis.
EME
Enterprise Management Engine. An SNMP-based
network management module that enables you to
configure and manage the 3Com CoreBuilder 9000
chassis and their modules.
end system / end station
A system where an ATM connection is terminated or
initiated. An originating end system initiates the ATM
connection, and a terminating end system terminates
the ATM connection.
enterprise network
A large network that connects most major points in a
company. Differs from a WAN in that it is typically
private and contained within a single organization.
Ethernet
A CSMA/CD, 10 Mbps, local area data network,
developed by Digital Equipment Corporation, Xerox
Corporation, and Intel. It is one of the most popular
baseband LANs in use.