Chapter 5 Glossary
10Base-T
It is an Ethernet standard for Local Area Network (LAN). 10Base-T uses a twisted pair
cable with maximum length of 100 meters.
AAL
ATM Adaptation Layer that defines the rules governing segmentation and reassembly of
data into cells. Different AAL types are suited to different traffic classes.
ADSL
Asymmetric Digital Subscriber Line, as its name showing, is an asymmetrical data
transmission technology with high traffic rate downstream and low traffic rate upstream.
ADSL technology satisfies the bandwidth requirement of applications, which demand
“asymmetric” traffic, such as web surfing, file download and Video-on-demand (VOD).
ATM
Asynchronous Transfer Mode is a layer 2 protocol supporting high-speed asynchronous
data with advanced traffic management and quality of service features.
bps
Bits per second, a standard measurement of digital transmission speeds.
Bridge
Bridge is a device that connects multiple physical networks and forward packets between
them. Bridges can usually be made to filter packets, that is, to forward only certain traffic.
Related devices are: repeaters which simply forward electrical signals from one cable to
the other and full-fledged routers which make routing decisions based on several criteria.
CPE
Customer Premises Equipment, such as ADSL router, USB modem.
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