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Glossary
H.323
The ITU standard for videoconferencing over packet-switched networks such as LANs and
the Internet.
IMUX
Inverse Multiplexor is a device that divides a high-speed transmission into several low-
speed transmissions and vice versa. It is used to transmit LAN and videoconferencing traffic
over lower-speed digital channels. The L2W-323 Gateway contains an internal IMUX.
IP address
The unique address of a computer attached to a TCP/IP network. IP addresses are 32 bit
long where each octet is represented in decimal and is separated by dots.
IP network
A network that uses the TCP/IP protocol.
ISDN
Integrated Services Digital Network. ISDN is an entirely digital telephone network that
allows both data and voice communication over the same line. ISDN replaces the old analog
local loop and operates at significantly faster speeds than the traditional telephone service.
ITU
International Telecommunications Union it is an international organization with 150
member countries founded in 1865 and headquartered in Geneva. The ITU develops
standards for interconnecting Telecommunication equipment across networks.
IVR
Interactive Voice Response is a two-stage incoming call routing method supported by the
Gateway. It enables Direct Inward Dialing to a LAN terminal even when the ISDN lines do
not have multiple numbers allowing direct dialing to an endpoint.
Kbps
Kilo Bits Per Second. One thousand bits per second.
L2W-323 Gateway
Translates between H.323 and H.320 protocols allowing the exchange of voice, video and
data between H.323-based conferencing endpoints on IP networks and H.320 compliant
endpoints on circuit-switched ISDN networks as well as Voice over IP (VoIP).
LAN
Local Area Network. A network of connected computers covering a small geographic area
such as a building or a campus.
Glossary-4
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