Download Adit 3000 and MSR GUI Reference Manual

Glossary
Central Office (CO)
Where telephone companies terminate customer lines and locate switching equipment to
interconnect those lines with other networks.
channel
A generic term for a communications path on a given medium; multiplexing techniques
allow providers to put multiple channels over a single medium.
Channel Associated
Signaling (CAS)
Carrying signaling information within the data channels of a T1 line (in band) rather than
on a separate control channel. CAS signaling is also used to carry 911 emergency data such
as telephone number and location information.
Channel Service Unit
(CSU)
The interface to the T1 line that terminates the local loop.
Classless Inter-Domain
Routing
CIDR is a new addressing scheme for the Internet which allows for more efficient
allocation of IP addresses than the old Class A, B, and C address scheme.
CLEI Codes
Common Language Equipment Identifier codes, that are assigned by Bellcore to provide a
standard method of identifying telecommunications equipment in a uniform, featureoriented language.
CLI
Command Line Interface
collision
In Ethernet, the result of two nodes transmitting simultaneously. The frames from each
device impact and are damaged when they meet on the physical media.
command line
The command line is where you enter MS-DOS commands.
compander
Companding is the process of compressing the amplitude range of a signal for economical
transmission and then expanding them back to their original form at the receiving end.
Demilitarized Zone
(DMZ)
A collection of computers that are shielded from both the trusted network and the untrusted
network by packet-filtering routers and gateways.
Domain Naming System
(DNS)
DNS. A mechanism used in the Internet for translating names of host computers into
addresses.
download
To transfer data from a larger “host” system to a smaller “client” system's hard drive or
other local storage device.
Dual Tone MultiFrequency (DTMF)
Dual Tone Multi-Frequency is a term describing push button or Touchtone dialing.
Dynamic Domain Name
System (DDNS)
Allows the hosting of a website, FTP server, or e-mail server with a fixed domain name
(e.g., www.xyz.com) and a dynamic IP address.
Dynamic Host
Configuration Protocol
(DHCP)
DHCP is a network configuration that allows maintenance to be performed from a central
site rather than by end users.
Earth ground
A wire conductor that terminates in the earth for electrical purposes. It is generally the
negative side of the circuit and is most important in alternating current (AC) circuits.
Chassis Ground is the general term used in direct current (DC) circuits.
Glossary-6
Adit 3000 (Rel. 1.6) and MSR Card (Rel 2.1) GUI