Polycom 3150-16966-002 User Manual page 163

Chapter 19 - Appendix C: Glossary
Abbreviation/Term
Endpoint
FECC
Frame
Frame Rate
G.711
G.722
G.728
Gatekeeper
H.221
H.230
H.231
H.242
H.243
H.261
H.263
H.264
H.323
IP
ITU-T Standard
19-2
Explanation
A hardware device, or set of devices, that can call, and be
called by an MCU or another endpoint. For example, an
endpoint can be a phone, a camera, or microphone
connected to a PC or conferencing system.
Far End Camera Control. The accompanying software in
certain cameras that enables a participant to control a
remote camera.
A group of bits that make up an elementary block of video
data for transmission by certain protocols.
The number of video frames displayed on-screen during one
second, measured in fps (frames per second).
ITU-T audio algorithme, 64Kbps, 3.4 kHz.
ITU-T audio algorithme, 64Kbps, 7 kHz.
ITU-T audio algorithme, 16 Kbps, 3.4 kHz.
A type of server that performs two main functions: translates
LAN alias addresses of terminals and gateways to IP
addresses and provides bandwidth management.
ITU-T standard that defines how to multiplex video, audio,
control, and user data into one serial bit stream.
ITU-T standard that defines simple multipoint control
systems procedures and describes network maintenance
functions.
ITU-T standard that defines a set of MCU functions and
operational requirements.
ITU-T standard that defines initiation of communications
between systems and capabilities negotiation procedures.
ITU-T standard that defines initiation of communications
between systems and capabilities negotiation procedures in
multipoint conferences.
ITU-T standard that defines the Px64 video coding algorithm.
ITU-T standard that provides improved compression and
quality of video images at a line rate lower than 384Kbps.
This standard is not supported by all codecs.
ITU-T standard that provides improved compression and
quality of video images in lower line rate connections and
is part of the Highest Common mechanism in Video
Switching conferences.
ITU-T standard for audio, video and data communications
across IP-based (LAN) networks, including the Internet.
Internet Protocol. The working protocol that forms the basis
of the internet.
International Telecommunications Union,
Telecommunication Standardization Sector (formerly CCITT).
An international group that produces official standards for