Polycom 1500/1800/2000/4000 manual Backward Compatibility to Lync

Appendix H - Deployment Into Microsoft Environments

The following table summarizes current and legacy (non DMA) conferencing modes within the deployment architectures:

Conference Modes by Deployment Architecture

	Deployment Architecture 1	Deployment Architecture 2
Conference	RealPresence Hosted	Lync 2013 AVMCU Cascaded Conferences
		(Indirect Dial In)
Mode	Conferences
	(Direct Dial In/Out)	With DMA	Non DMA
	With or without DMA
		(RealConnect)	(Backward Compatibility)
AVC Only	Supported.	Supported.	Supported.
	Dial Out from DMA is not	Simulcast transmitted.	One transmitted RTV stream.
	supported.	Multiple participants received.	One received RTV stream.
	For backward compatibility,
	Dial out from the RMX Web
	Client or RMX Manager can
	be used.
	When using backward
	compatibility mode for Dial
	Out, the default video
	protocol of H.264/SVC in
	Lync 2013 clients is not
	supported. Instead RTV will
	be utilized, as long as that
	codec has not been manually
	disabled on the Collaboration
	Server configuration using
	any related system flag
	setting which are covered
	later in this section.
Mixed Mode	Supported	Not Supported
SVC Only		Not Supported

Backward Compatibility to Lync 2010

All Lync 2013 functionality can be disabled by adding the BLOCK_NEW_LYNC2013_FUNCTIONALITY System Flag and setting its value to YES.

The flag’s default value is NO. When the flag is set to YES, all Lync 2013’s new functionality is disabled. All Lync 2013 clients, whether connected directly or via cascading, will connect using the RTV codec, and not the Microsoft H.264/SVC codec.

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