Appendix E
Glossary
Page E-1
APPENDIX E. GLOSSARY
A
AC - Alternating Current, a voltage or current of alternating
polarity.
Access Unit - A unit that allows multiple device attachment at a
central location.
Address - Uniquely assigned identification code to each device or
workstation connected to a network.
Analog - Continuous varying signal that can take on any voltage or
current level.
Anomaly - Impedance discontinuity causing an undesired signal
reflection on a transmission cable.
ANSI - American National Standards Institute.
ARCNET - Attached Resources Computing Network. A token bus
developed by Datapoint.
ATM - Asynchronous Transfer Mode, a high speed packet
switching method.
Attenuation - Reduction in the strength or power of a signal as it
travels over the length of a cable.
Attenuation to Crosstalk Ratio (ACR) An indication of the
reliability of data communications through a network. It is a
computed value based upon the measured values of
attenuation and NEXT.
AUI- Attachment Unit Interface, connects the transceiver and
Network Interface Card in 10BASE5 networks.
AWG - American Wire Gauge, the thickness of the conductor in a
cable.
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