Operations Manual

Product Glossary - R0.1 glossary-3
CONFIDENTIAL & PROPRIETARY
D
O
N
O
T
C
O
P
Y
azimuth
The horizontal angle the radiating lobe of an antenna makes. When you adjust
an IFU by its azimuth, you move it on its horizontal plane (left to right or right
to left).
B
backbone
A backbone is the transport path that provides connectivity to other paths. On
the Internet or a WAN, the backbone is a series of paths to which local,
regional, or global networks connect.
backhaul
A transmission path used to move traffic to/from a remote location from/to a
central location. (The verb form is back haul.)
bandwidth
The range of frequencies over which a signal is transmitted.
BER
See Bit Error Rate (BER).
Bit Error Rate (BER)
The number of bit errors detected – displayed as the ratio of the average
number of errored bits in a given number of bits sent. The BER is used to
measure transmission quality. For example, a BER of 10
–12
is equivalent to
one error in a trillion bits, which means that for:
n SONET OC-3, one error bit is detected approximately every 1.8
hours
n Fast Ethernet, one error bit is detected approximately every 2.8 hours.
BNC connector
Bayonet Neil-Concelman connector. A bayonet type of connector for coaxial
cables in an Ethernet network.
C
Central Office (CO)
Location at which one or more switches reside for aggregating voice or data
traffic.
Central Processing Unit (CPU)
Central controller that coordinates functions in the IFU.