Glossary
70
ClearOne Communications
~ www.clearone.com
J
Java
A high-level programming language for the World Wide Web.
L
LAN
A computer network that spans a relatively small area. LANs are capable of
transmitting data at very fast rates, much faster than data can be transmitted over a
telephone line; but the distances are limited, and there is also a limit on the number
of computers that can be attached to a single LAN.
LAN call
A call made over your local area network using the H.323 standard for
video conferencing. H.323 is a protocol approved by the International
Telecommunication Union (ITU) as a standard for the transmission of audio and
video data. H.323 allows different teleconferencing devices to communicate.
LAN-WAN call
A LAN-WAN call is a call made from a local area network to an
H.320 wide area network (WAN), via a gateway. See also LAN and WAN.
LED
Light emitting diode is an electronic device that lights up when electricity is
passed through it. LEDs are usually red.
Line input
Anything with an audio output can be attached. For example, you can
connect a CD player, so that when you are showing a PowerPoint
®
presentation you
can play audio that goes with it.
N
Near-end
The local site of the video conference.
NT-1
An interface box that converts ISDN data into a format the V-There can
understand (and vice-versa). Each ISDN line requires one NT-1. An NT-3 handles
three ISDN lines (V-There 2200 only). An NT-1 (or NT-3) is required for North
American V-There users to use ISDN; these interfaces are available through your
ClearOne distributor.
NTSC monitor
The national television standards committee is responsible for
setting television and video standards in the United States. See also PAL Monitor.
P
PA Adaptive Mode
The AccuMic II recognizes how much loudspeaker audio is
picked up by the microphone and then uses this level as the new ambient level. This
prevents loudspeaker audio from gating on a microphone, while still allowing people
in the room to gate on microphone elements as they speak.