Polycom 3725-76302-001O manual Polycom, Inc 207

Conference Manager Configuration

Field	Description
Conference Settings
Conference mode	One of the following:
	• AVC only — Standard video conferencing mode supporting the H.264
	Advanced Video Coding (AVC) compression standard. In an AVC
	conference, the MCU transcodes the video stream to each device in the
	conference to provide an optimal experience, based on its capabilities.
	This is the only mode that supports the use of Polycom MCU profiles,
	third-party and legacy endpoints, and Codian and legacy RMX MCUs.
	• SVC only — video conferencing mode supporting the Annex G extension
	of the H.264 standard, known as H.264 Scalable Video Coding (SVC). An
	SVC video stream consists of a base layer stream that encodes the lowest
	available quality representation plus optional enhancement layer streams
	that each provide an additional quality improvement. The MCU passes the
	video streams from each device to each device.
	The number of enhancement layer streams sent to a device can be
	tailored to fit the bandwidth available and device capabilities.
	SVC conferencing is only possible with Polycom MCUs and endpoints
	that support H.264 SVC. Selecting this setting disables most of the
	other template settings.
	• Mixed AVC and SVC — Enables both AVC-only endpoints and endpoints
	supporting SVC to join the conference. If the selected MCU doesn’t support
	SVC, the conference is started in AVC mode.
	Note: If the MCU supports SVC but not mixed mode (RMX 7.8), the
	conference fails to start.
	See SVC Conferencing Support on page 17. See also the documentation for
	your RealPresence Collaboration Server or RMX MCU.
Conference mode	For mixed conference mode, specifies the video experience optimization
experience	strategy the MCU should implement. The experience optimization strategy
	determines the quality of the video streams that SVC participants receive from
	AVC participants.
	See the documentation for your RealPresence Collaboration Server or RMX
	MCU for detailed data regarding the resolutions each experience setting
	supports for various ranges of line rate.
	Note: All AVC callers must be capable of sending at a line rate available for
	the experience setting. SVC participants receive the same stream quality from
	all AVC endpoints, regardless of their individual capabilities.
Cascade for bandwidth	Enables conferences using this template to span Polycom MCUs to conserve
	network bandwidth.
	Cascading for bandwidth requires site topology information, which the
	Polycom RealPresence DMA system can get from a Polycom RealPresence
	Resource Manager or CMA system (see Resource Management System
	Integration on page 178) or you can create (see Site Topology on page 278).
	This option and Cascade for size are mutually exclusive. See About
	Cascading on page 193 for more information about enabling cascading of
	conferences.

Polycom, Inc. 207