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GLOSSARY 439
Ethernet switching A technique that brings the advantages of a parallel networking
architecture to contention-based Ethernet LANs. Each LAN can be
segmented with its own path. When users on different segments
exchange data, an Ethernet switch dynamically connects the two
separate Ethernet channels without interfering with other network
segments.
fast Ethernet An evolution of Ethernet that raises the bandwidth to 100 Mbit/s.
fast packet switching A WAN
technology for transmitting data, digitized voice, and digitized
image information. It uses short, fixed length packets.
FDDI Fiber Distributed Data Interface. An optical fiber-based token-passing ring
LAN technology that carries data at a rate of 100 Mbit/s.
FRAD Frame Relay Access Device. A wide-area networking device that forwards
traffic to and from the endpoint of a the network.
frame A structured group of bits sent over a link. A frame can contain control,
addressing, error detection, and error correction information. The term is
often used synonymously with the term packet
.
frame relay A packet-switching wide-area technology for interconnecting LANs at
high speeds.
gateway A network device that provides a means for network traffic to pass from
one topology, protocol, or architecture into a different topology, protocol,
or architecture.
gigabit Ethernet An Ethernet technology that raises transmission speed to 1 Gbit/s,
targeted primarily for use in backbones.
glare A condition in telephony where both ends of an available connection are
seized at the same time.
group mailboxes Mailboxes that are not associated with a single telephone but allow a
group of users to have joint access to a single mailbox.
H.323 An ITU
standard for the transmission of real-time audio, video, and data
communications over packet-switched networks, such as local area
networks (LANs) and the Internet. H.323 is the basis for Internet
telephony.