User's Manual

132 BreezeMAX CPEs Product Manual
Glossary
CLI Command Line Interface. A user interface where the user sees the
command line on the monitor and a prompt that is waiting to accept
instructions from the user. The user types in the command, the
computer acts on that command and then issues a new prompt for the
next instruction from the user.
CPE Customer Premise Equipment. Communications equipment that
resides on the customer's premises.
CPU Central Processing Unit
CRC Cyclical Redundancy Check. A common technique for detecting data
transmission errors, in which the frame recipient calculates a
remainder by dividing frame contents by a prime binary divisor and
compares the calculated remainder to a value stored in the frame by
the sending equipment.
CSMA/CD Carrier Sense Multiple Access with Collision Detection. Media-access
mechanisms wherein devices ready to transmit data first check the
channel for a carrier. If no carrier is sensed for a specific period of
time, a device can transmit. If two devices transmit at once, a collision
occurs and is detected by all colliding devices. This collision
subsequently delays retransmissions from those devices for some
random length of time. Ethernet and IEEE 802.3 use CSMA/CD
access.
CT Committed Time. The time interval used for measuring average
information transfer rates.
DHCP Dynamic Host Configuration Protocol. A protocol for dynamically
assigning IP addresses from a pre-defined list to nodes on a network.
Using DHCP to manage IP addresses simplifies client configuration
and efficiently utilizes IP addresses.
DL Down Link
DRAP Dynamic Resources Allocation Protocol
EMC Electro-Magnetic Compatibility. The capability of equipment or
systems to be used in their intended environment within designed
efficiency levels without causing or receiving degradation due to
unintentional EMI (Electro Magnetic Interference). EMC generally
encompasses all of the electromagnetic disciplines.
ETSI European Telecommunications Standards Institute. A non-profit
organization producing voluntary telecommunications standards used
throughout Europe, some of which have been adopted by the EC as
the technical base for Directives or Regulations.