User`s guide

Glossary Cayman 3220-H User’s Guide
2 December 2000
asynchronous
communication
Network system that allows data to be sent at irregular intervals by
preceding each octet with a start bit and following it with a stop bit.
Compare synchronous communication.
AUI Attachment Unit Interface. Connector by which a thick (802.3)
Ethernet transceiver cable is attached to a networked device.
backbone The segment of the network used as the primary path for
transporting traffic between network segments.
baud rate Unit of signaling speed equal to the number of number of times per
second a signal in a communications channel varies between states.
Baud is synonymous with bits per second (bps) if each signal
represents one bit.
binary Numbering system that uses only zeros and ones.
bps Bits per second. A measure of data transmission speed.
BRI Basic Rate Interface. ISDN standard for provision of low-speed
ISDN services (two B channels (64 kbps each) and one D channel
(16 kbps)) over a single wire pair.
bridge Device that passes packets between two network segments
according to the packets' destination address.
broadcast Message sent to all nodes on a network.
broadcast address Special IP address reserved for simultaneous broadcast to all
network nodes.
buffer Storage area used to hold data until it can be forwarded.
carrier Signal suitable for transmission of information.
CCITT Comité Consultatif International Télégraphique et Téléphonique or
Consultative Committee for International Telegraph and Telephone.
An international organization responsible for developing
telecommunication standards.
CD Carrier Detect.