Avaya Scopia Elite 6000 Administrator's Manual page 95

Balanced
Microphone
BFCP (Binary Floor
Control Protocol)
Bitrate
Call Control
Cascaded
Videoconference
CIF
Content Slider
Continuous
Presence
Control
December 2017
A balanced microphone uses a cable that is built to reduce noise and
interference even when the cable is long. This reduces audio disruptions
resulting from surrounding electromagnetic interference.
BFCP is a protocol which coordinates shared videoconference features in
SIP calls, often used by one participant at a time. For example, when
sharing content to others in the meeting, one participant is designated as
the presenter, and is granted the floor for presenting. All endpoints must
be aware that the floor was granted to that participant and react
appropriately.
Bitrate is the speed of data flow. Higher video resolutions require higher
bitrates to ensure the video is constantly updated, thereby maintaining
smooth motion. If you lower the bitrate, you lower the quality of the video.
In some cases, you can select a lower bitrate without noticing a significant
drop in video quality; for example during a presentation or when a lecturer
is speaking and there is very little motion. Bitrate is often measured in
kilobits per second (kbps).
See Signaling on page 105.
A cascaded videoconference is a meeting distributed over more than one
physical Scopia Elite MCU and/or Equinox Media Server, where a master
MCU/Media Server connects to one or more slave MCUs/Media Servers
to create a single videoconference. It increases the meeting capacity by
combining the resources of several MCUs/Media Servers. This can be
especially useful for distributed deployments across several locations,
reducing bandwidth usage.
CIF, or Common Intermediate Format, describes a video resolution of 352
× 288 pixels (PAL) or 352 x 240 (NTSC). This is sometimes referred to as
Standard Definition (SD).
The Avaya Scopia Content Slider stores the data already presented in the
videoconference and makes it available for participants to view during the
meeting.
Continuous presence enables viewing multiple participants of a
videoconference at the same time, including the active speaker. This
graphics-intensive work requires scaling and mixing the images together
into one of the predefined video layouts. The range of video layouts
depends on the type of media processing supported, typically located in
the MCU/Media Server.
Control, or media control, sets up and manages the media of a call (its
audio, video and data). Control messages include checking compatibility
between endpoints, negotiating video and audio codecs, and other
parameters like resolution, bitrate and frame rate. Control is
Administrator Guide for Avaya Scopia
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Balanced Microphone
®
Elite 6000 MCU 95