Copyright © 1997-2009 KT&C Co., Ltd. All Rights Reserved.
Korea Technology & Communications Co., Ltd.
70
KVS-1000 User’s Manual
Full-duplex
- Transmission of data, e.g. audio, in two directions simultaneously.
G.
G.711
- G.711 is the international standard for encoding telephone audio on 64 Kbps
channel. It is a pulse code modulation (PCM) scheme operating at 8 kHz sample rate.
G.726
- Frequently used speech-compression algorithm in telecommunications due to its
high perceived speech quality and low resource requirements.
H.
Half-duplex
- A half-duplex link communicates in one direction at a time only, much like
a walkie-talkie. Two way communications is possible, but not simultaneously.
HTTP
- Hypertext Transfer Protocol. The set of rules for exchanging files (text, images,
sound, video, and other files) on the World Wide Web.
HTTP-S (HTTPS)
- An extension to the HTTP protocol to support sending data securely
over the World Wide Web.
I.
Intranet
- A private network limited to an organization or corporation. Usually closed to
external traffic.
IP
- Internet Protocol.
IP address
- A unique number used by a computer on the network to allow it to be
identified and found.
J.
JPEG
- A standard image format, used widely for photographs. Also known as JPG.
L.
LAN
- A local area network (LAN) is a group of computers and associated devices that
typically share common resources within a limited geographical area.
Linux
- A popular operating system that is “open source” and practically free of charge.
Lux
- A standard unit for light measurement.
M.
Mbit/s
- Megabits per second. A unit for measuring speeds in networks. A LAN might
run at 10 or 100 Mbit/s
MPEG4
- A video compression standard that makes good use of bandwidth, and which
can provide DVD-quality video streams at less than 1 Mbit/s.
Multicast
- A bandwidth-conserving technology that reduces bandwidth usage by
simultaneously delivering a single stream of information to multiple network recipients.
P.
Ping
- A small utility used for sending data packets to network resources to check that
they are working and that the network is intact.
Pre/post alarm image
- The images from immediately before and after an alarm.
