Cyber Digital, Inc.
Analog Analog - Transmission employs
continuously variable signal.
Asynchronous Transfer Mode - High bandwidth, low-delay,
connection-oriented, packet switching technique requiring 53-byte,
Backbone - An element of the network infrastructure that provides
high-speed, high capacity connections among the network's physical points
of presence. The backbone is used to transport end user traffic across the
17 metropolitan areas and across the United States.
Bandwidth - Refers to the maximum amount of data that can be
transferred through a communication channel in a given time. It is usually
measured in bits per second for digital communications.
Broadband - Systems that transmit data at high speed using high
bandwidth capacity communication channel.
Central Office - Incumbent carrier facility where subscriber lines
are connected to ILEC switching equipment.
Collocation - A location where a competitive carrier network
interconnects with the network of an incumbent carrier's central office.
CLEC - Competitive Local Exchange Carrier; a category of telephone
service provider that offers local exchange services in competition with
those of the incumbent carrier.
Copper Line or Loop - A pair of traditional copper telephone lines
using electric current to carry signals.
Digital - Transmission and switching technologies employ a sequence
of binary digits to convey information.
DSL - Digital Subscriber Line. An analog transmission technology
where binary digits are sent over analog transmission lines or local
E-Commerce - Electronic Commerce. An internet service that supports
electronic transactions between customers and vendors to purchase goods
Firewall - A computer device that separates a local area network
from the internet and prevents unauthorized access to the local area
network through the use of electronic security mechanisms.
Frame Relay - A form of packet switching with variable length
frames that may be used with a variety of communication protocols.
ILEC - Incumbent Local Exchange Carrier; a company providing local
Interconnection Agreement - A contract between an incumbent carrier
and a competitive carrier for the connection of a competitive carrier
network to the public switched telephone network.
Internet - An array of interconnected networks using a common set
of protocols defining the information coding and processing requirements
that can communicate across hardware platforms and over many links.
Internet Protocol - A standard network protocol that allows
computers with different architectures and operating system software to
communicate with other computers on the internet. Advanced packet systems
employ the Internet Protocol (IP) standard. 18
ISDN - Integrated Services Digital Network. A transmission method
that provides circuit-switched access to the public network at speeds of
64 or 128 Kbps for voice or data transmission.
Internet Service Provider - A company that provides direct access
to the internet.
Inter-exchange Carrier - Usually referred to as a long-distance
Kbps - Kilobits per second. 1,000 bits per second.
Mbps - Megabits per second. 1,000,000 bits per second.
Modem - An abbreviation of Modulator-Demodulator. An electronic
signal-conversion device used to convert digital signals from a computer
to analog form for transmission over the telephone network.
Packets - Information represented as bytes grouped together through
a communication node with a common destination address and other attribute
Router - A device that accepts the Internet Protocol from a
local area network and switches/routes Internet Protocol packets across a
T-1 - This is a Bell System term for a digital transmission link
with a capacity of 1.544 Mbps.