Polycom RealPresence 800s Getting Started Manual page 222

RealPresence Collaboration Server 800s/Virtual Edition Getting Started Guide
Abbreviation/Term
DTMF
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.264
H.320
Polycom®, Inc.
Explanation
Dual Tone Multi Frequency. A system of coded signals used by touch-tone telephones in
which a specific sound, frequency or tone is assigned to each key so that the signal can be
easily recognized by a computer. The codes enable data input and control of
voice-processing systems. DTMF signals can pass through the entire connection to the
destination device and therefore are used for remote control after the connection with the
MCU is established.
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 and microphone connected
to a PC or an integrated Room System (conferencing system).
Far End Camera Control. In certain video cameras, the accompanying software that
enables a participant to control a remote camera. Used in Continuous Presence video
conferences in conjunction with the LSD option. For more information, see LSD.
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 algorithm, 64Kbps, 3.4 kHz.
ITU-T audio algorithm, 64Kbps, 7 kHz.
ITU-T audio algorithm, 16Kbps, 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 384 Kbps. This standard is not supported by all codecs.
A proprietary Polycom Video compression standard.
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 that defines how the H-series video conferencing recommendations work
together.
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