Endpoint Alias
on page 49.
FEC
Forward Error Correction (FEC) is a proactive method of sending redundant
information in the video stream to preempt quality degradation. FEC
identifies the key frames in the video stream that should be protected by
FEC. There are several variants of the FEC algorithm. The Reed-Solomon
algorithm (FEC-RS) sends redundant packets per block of information,
enabling the sender (like the Scopia
®
Elite MCU) to manage up to ten
percent packet loss in the video stream with minimal impact on the
smoothness and quality of the video.
FECC
Far End Camera Control (FECC) is a feature of endpoint cameras, where
the camera can be controlled remotely by another endpoint in the call.
Forward Error
Correction
on page 52.
FPS
on page 52.
Frame Rate
on page 52.
Frames Per Second
Frames Per Second (fps), also known as the frame rate, is a key measure
in video quality, describing the number of image updates per second. The
average human eye can register up to 50 frames per second. The higher
the frame rate, the smoother the video.
FTP
The File Transfer Protocol (FTP) is a standard network protocol used to
transfer computer files from one host to another host over a TCP-based
network, such as the Internet. FTP is built on a client-server architecture
and uses separate control and data connections between the client and the
server. FTP users may authenticate themselves using a clear-text sign-in
protocol, normally in the form of a username and password, but can
connect anonymously if the server is configured to allow it.
Full HD
Full HD, or Full High Definition, also known as 1080p, describes a video
resolution of 1920 x 1080 pixels.
Full screen Video
Layout
The full screen view shows one video image. Typically, it displays the
remote presentation, or, if there is no presentation, it displays the other
meeting participant(s).
Gatekeeper
A gatekeeper routes audio and video H.323 calls by resolving dial strings
(H.323 alias or URI) into the IP address of an endpoint, and handles the
initial connection of calls. Gatekeepers also implement the dial plan of an
organization by routing H.323 calls depending on their dial prefixes.
Scopia
®
Management includes a built-in Avaya Scopia
®
Gatekeeper, while
ECS is a standalone gatekeeper.
Glossary
52
Avaya Scopia
®
XT Desktop Server Installation Guide
August 2015