Polycom 1500/1800/2000/4000 For single MCU conferences, For cascaded conferences,  Transcoding

	System Configuration Flags
Manually Added, Modified, Deleted System Flags
Flag	Description
LPR_CONTENT_RATE_ADJUST_	When LPR is initiated by an endpoint in an AVC-CP conference due to
WEAK_LPR	experienced packet loss, the MCU reduces video rate (minimum is 64K) to
	avoid exceeding bandwidth.
	At times, further reduction is required to preserve the bandwidth, which is
	regulated by this system flag.
	Set this flag valustep e to YES, to enable H.323 endpoints to reduce their
	content rate or LPR strength as follows:
	• For single MCU conferences:
	 VSW content - Drop content rate upon packet loss condition.
	 Transcoding - Drop content rate upon packet loss condition for the
	protocol used by the endpoint experiencing the packet loss.
	• For cascaded conferences:
	 VSW content - Decrease LPR strength (from 5% to 2%).
	 Transcoding:
	If packet loss occurs at one of the local endpoints, drop content rate
	upon packet loss condition for the protocol used by the endpoint
	experiencing the packet loss.
	If packet loss occurs at the cascaded link, Decrease LPR strength
	(from 5% to 2%).
	If you set this flag to NO, the content rate is not reduced, and MCU packet
	loss protection is guaranteed for 5%.
	Range: YES / NO
	Default: NO
	Notes:
	• No system restart is required for this flag new value to take effect.
	• This flag should not be set to YES in systems using TIP conferencing.
LYNC_AVMCU_1080p30_ENCODE	MS AV MCU Cascade deployment supports HD1080p30 video resolution
_RESOLUTION	according to the settings of this flag only if Video Optimized mode is
	selected.

Range: YES / NO

Default: NO

• NO—Video streams sent to and received from the MS AV MCU are HD720p30, SD, and CIF.

• YES—Video streams sent to the MS AV MCU are HD1080p30, SD, CIF. Video streams received from the MS AV MCU are 720p30,SD, and CIF.

For more information see Video Resource Requirement Selection in Lync 2013 AVMCU Cascade.

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