Specifications

Glossary
5
Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide
DOC-7810814=
broadband
A transmission facility having a bandwidth of greater than 20 kHz. Any communications system able to deliver multiple
channels or services of video, voice, or data to its users or subscribers over a broad band of RF spectrum.
broadcast address
Special address reserved for sending a message to all stations. Generally, a broadcast address is a MAC destination address of
all ones.
bus
Common physical signal path, or highway, composed of wires or other media across which signals can be sent from one part
of a computer to another.
byte
A collection of bits used to form a character or some other information.
C
call
Establishment of (or attempt to establish) a voice or data connection between two endpoints, or between two points which
provide a partial link (e.g. a trunk) between two endpoints.
capture group (RMON 2)
Storage of packets, based on filters, for later retrieval.
carrier
A long distance company which uses primarily its own transmission facilities, as opposed to resellers which lease or buy most
or all transmission facilities from carriers. Many people refer to any type of long distance company, whether it has its own
network or not, as a carrier, so the term is not as restrictive as it used to be.
Channel-Associated Signaling
(CAS)
Comitre Consultatif Internationale de Telegraphique et Telephonique (CCITT)
An international group operating under the auspices of the International Telecommunications Union (ITU) and charged with
establishing telecommunications standards. Name recently changed to ITU-TSS (International Telecommunications
Union-Telecommunications Standards Sector).
cell
An ATM unit of segmented data that consists of 53 bytes or octets. Of these, five constitute the header and the remaining 48
carry the data payload. Cell-switching gives maximum utilization of physical resources.
central office (CO)
The telephone company facility housing the switches and other equipment that provide telephone service for customers in an
immediate geographical area.
channel
A transmission path between two points. For example, a DS0 in a T1 line.