Polycom 8 manual Option, Description, 10-24, 3:Basic Conference Parameters

Chapter 10 - Conference Templates – Full Parameters View

Table 10-3: Basic Conference Parameters

Option	Description
Video Protocol	The Video Protocol, Video Format and QCIF Frame
	Rate are parameters that determine the highest
	common video used by all the conference
	participants. The Video Protocol determines the
	video compression standard used by the endpoints.
	Select one of the following options:
	Auto - the system automatically selects the
	appropriate compression method and enables the
	dynamic adjustment of the highest common video
	algorithm. In such a case, when a participant leaves
	the conference, the MCU adjusts the common video
	to the highest level for the remaining connected
	participants. This setting overrides the Video
	Protocol settings in the Participants Properties -
	Advanced dialog box as the dynamic mode settings
	are forced by the MCU.
	H261 - The compression standard mandatory to all
	endpoints.
	H263 - The compression standard that provides
	improved video quality at a line rate lower than 384
	Kbps. This standard is not supported by all
	endpoints. If H.263 is selected in Video Switching
	conferences, all participants must be connected
	using this protocol. Participants whose endpoint
	does not support H.263 are connected as
	Secondary.
	Note:
	When selecting the H.261 or H.263, the system
	regards it as a fixed format and disables the dynamic
	adjustment of the highest common video.
	The dynamic adjustment of the video protocol
	supports only 30 frames per second in CIF format.
	All other H.263 capabilities are disabled.
	H264* - The compression standard H.264* that
	incorporates DCT (H.263) compression principles,
	but is provided at half the bit rate.
	H.264* provides CIF/4CIF video using low bit rates
	and implements a fixed video rate when the video
	stream of the endpoint becomes active ("people").
	The Endpoint that supports H.264* is iPower.

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