Polycom VIU-323 User Manual page 123

H.323
The ITU standard for videoconferencing over packet switched networks such as LANs,
including TCP/IP and IPX over Ethernet, and the Internet; this standard provides a non-
guaranteed quality of service
H.323 device
An H.323-compliant endpoint for transmitting voice and/or video that connects through an
IP-based network.
IEEE
Institute of Electrical Electronics Engineers.
IP address
Internet Protocol address. The unique address of a computer attached to a TCP/IP network.
The address contains both a network ID and a host, or machine, ID. IP addresses are 32 bits
long where each of the four octets is represented in decimal notation 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, because it is digital, 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.
ITU-T
ITU-Telecommunications Standardization Sector.
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 (or one thousand bits per second). A measure of bandwidth.
Glossary-3