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The Glossary defines technical terms and abbreviations used in this manual.
ADSL
Asymmetric Digital Subscriber Line. A method of transmitting at different downstream and
upstream speeds.
Asymmetric
Transmission which sends data at different rates in each direction.
Transmission
ATU-C
ADSL Terminal Unit at the service provider site.
ATU-R
ADSL Terminal Unit at the remote site.
Bandwidth
Used to describe the capacity or amount of traffic (data, voice, or video) a certain
communications line is capable of accommodating.
BER
Bit Error Rate. The ratio of received bits that are in error.
Binder Group
A group of 25 or 50 pairs of wires.
Bit
In a binary system, the smallest unit of information. It is represented as a zero or a one.
Bridge
A two-port internetworking device that selectively filters or forwards traffic based or MAC
addresses.
Bridged
A pair of wires connected in parallel across a single line to form a "T" Tap configuration.
Downstream
The direction of data reception from the Megabit Modem 310F to the Megabit Modem 320F.
Ethernet
A baseband LAN specification that has become a series of standards produced by IEEE
referred to as IEEE 802.3.
HDLC
High-level Data Link Control.
Hub
A common wiring point for star-topology networks, and a common synonym for a
concentrator.
IEEE
Institute of Electrical and Electronics Engineers. A professional organization that defines
network standards.
kbps
Kilobits per second. A measure of transmission speed at 1,000 bits per second.
kpps
Kilo packets per second.
LAN
Local Area Network. The means by which a local community of users and workgroups can
share information and resources electronically.
LED
Light emitting diode.
Megabit Modem 310F and 320F User Manual
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LOSSARY
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