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BayStack – An earlier
Nortel Networks brand name for its Ethernet switches and
hubs.
Call routing – Encompasses
getting a placed call from one endpoint to another through
the network.
Communications infrastructure – Organizations,
personnel, procedures, facilities and networks employed
to transmit and receive information by electrical or electronic
means.
Converged communications – The
convergence of voice, video and data of Internet Protocol
(IP).
Data routing – A selected
path in a computer network along which data is being sent.
Digital input/output – A
type of interface between a control system and field instrumentation
which allows values of only two states to be transmitted.
Digital voice switch – intelligent
devices that provide both gateway and call management functionality.
They run an embedded, real-time operating system ensuring
dial tone.
Ethernet – A large,
diverse family of frame-based computer networking technologies
that operates at many speeds for local area networks (LANs).-alternate
definition
Fiber optic cabling – The
medium and technology for the transmission of information
in the form of light impulses along a glass or plastic
wire or fiber. Fiber optic cable carries much more
information than conventional copper wire and is far less
subject to electromagnetic interference. Most telephone
company long-distance lines now are fiber optic.
Firewall – A vital
element of Internet security, monitoring all incoming information
to confirm that it was requested by a particular computer. Information
that was not specifically requested is blocked by the firewall.
Gateway – A network
node equipped for interfacing with another network that
uses different protocols.
Hybrid network – A
communications network that uses a combination of line
facilities, i.e., trunks, loops, or links, some of which
use only digital signals.
Image quality – The
characteristics of a radiographic image defined by the
degree of detail it shows.
Interactive voice response – A
system to automatically manage incoming calls, IVRO can
link phone callers with a computer database. It can accept
a question, access the company’s database and provide
a caller with the information they are seeking. It can
also take information from the caller, convert it to data
and input that data to the database.
Interface – In a local
area network, the interface between the medium access unit
and the data terminal equipment within a data station.
IP camera – A camera
that transmits images over a broadband Internet connection
using
Internet Protocol (IP).
IP network – A network
in which transmission of information is done using internet
protocal.
IP telephony – A set
of technologies that enables voice, data and video collaboration
over existing IP-based LANS, WANs, and the internet.
Landline – Metal wire
or fiber optic cable that transmits telephone signals,
as compared to cellular, which uses airwaves.
Network – Telecommunications
equipment that is interconnected to allow transfer of voice
and data among various sites.
Network camera – A
camera and computer combined in one intelligent unit to
capture and send live video directly over an IP network
such as LAN, intranet or the Internet and enables users
to view and/or manage the camera using a standard Web browser
or video management software on any local or remote computer
on a network. Allows authorized viewers from different
locations to simultaneously access images from the same
network camera.
Peer-to-peer switching – The
stations participating in a call are connected directly
to each other through the IP network. The signals travel
through the IP network but do not “go through: the
switch as they do in traditional telephony.
Platform – The type
of computer on which a given operating system or application
runs.
Scalability – The
degree to which video and image formats can be sized in
systematic proportions for distribution over communications
channels or varying capacities.
Security – A condition
that results from the establishment and maintenance of
protective measures that ensure a state of inviolability
from hostile acts or influences.
Server – A network
device that provides services to the network users by managing
shared resources.
Switch – In communications
systems, a mechanical, electro-mechanical, or electronic
device for making, breaking, or changing the connections
in or among circuits.
T1 – A full-duplex
digital transmission facility that is composed of two twisted
metallic pairs and regenerators that carry a DSI signal.
Telecommunications – The
science and technology of communication at a distance by
electronic transmission of impulses, as by telegraph, cable,
telephone, radio, or television.
Unified messaging – Software
technology that allows carriers and Internet service providers
to manage customer e-mails, voice and fax messages from
any phone, PC or information device.
Voice application – Any
application which relies upon voice communications, including
PSTN voice, also known as POTS (plain old telephone service).
It features voice mail, teleconferencing and audiotext.
Voice switch – A piece
of equipment used in voice and video conferencing and speakerphones.
It responds to voice. When the device hears a voice, it
turns on and transmits it.
VoIP – Voice over
Internet Protocol, a technology that enables voice calls
to use a broadband Internet connection instead of a regular
phone line. While some services limit calls only
to phones with VoIP service and require special phones
or headsets, newer services include local, long distance,
mobile, and international calls to numbers with traditional
phone service.
Web server – A software
program or server computer equipped to offer World Wide
Web access.
Wireless – Descriptive
of a network or terminal that uses electromagnetic waves
rather than wire conductors for telecommunications.
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