Polycom 1500/1800/2000/4000 manual FEC Forward Error Correction, IPv6 Support, Default Auto

Appendix H - Deployment Into Microsoft Environments

Limit Maximum Resolution for MS SVC Using a System flag

The MAX_MS_SVC_RESOLUTION System Flag can be used to minimizing the resource usage by overriding the default resolution selection and limiting it to a lower resolution.

Range: AUTO, CIF, VGA, HD720, HD1080

Default: AUTO

The MAX_MS_SVC_RESOLUTION System Flag operates independently from the

MAX_RTV_RESOLUTION System Flag allowing differing maximum resolutions to be selected for the MS SVC and RTV protocols.

If you want to modify System Flag values, the flags must be added to the System Configuration file. For more information see: Modifying System Flags and Controlling Resource Allocations for Lync Clients Using RTV Video Protocol.

FEC (Forward Error Correction)

FEC is supported for RTV and MS SVC video protocols.

●FEC will be automatically turned on by the VSR (Video Source Request) message. Redundant Audio Data (RED) is supported for the following Audio CODECS:

●G.722

●G.711A

●G.711U

The Collaboration Server transmits RED when packet loss is reported and stops sending RAD when packet loss is stopped.

For more information see Lost Packet Recovery.

IPv6 Support

In addition to IPv4, IPv6 is supported in Lync 2013 environments.

Following IP modes are supported for all network connections—ICE, Media, Management, Signaling, etc.:

●IPv4 only

●IPv6 only

●IPv4 & IPv6

As in previous versions, IPv4 Candidates are advertised first in the SDP.

IPv6 is not supported by Lync 2010. All dial out calls from the Collaboration Server are considered Lync 2010 calls and utilize IPv4.

Dial out calls from DMA to Lync environments are considered to be dial in calls from the Collaboration Server perspective.

The ANAT (Alternative Network Address Types) option is not applicable in Lync environments. For more information see IPv6 Addressing Guidelines.

DHCPv6 Support for Auto IPv6 Address Assignment

DHCPv6 Auto IPv6 Addresses Assignment, as required by Lync 2013 environments is supported.

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