Appendix H-Setting the RMX for Integration Into Microsoft Environment
Polycom, Inc.
H-35
For more details, see "
RMX Configuration for CAC Implementation”
on page
H-68
.
FEC Support
Microsoft RTV FEC (Forward Error Correction) is supported in the RMX to control and
correct packet loss when receiving and sending video streams using the Microsoft Lync
Server 2010 communications software. All RTV resolutions and options, including B Frame,
are supported.
Redundant video packets are sent over the network during video stream transmission.
When packet loss occurs, FEC is automatically activated and the redundant packet is used to
recover the lost packet.
When receiving video transmissions, packet loss automatically triggers FEC in the RMX.
When sending video transmissions, RMX sends FEC packets when the RTCP RX report
contains packet loss that is greater than or equal to 1 percent.
Media Over TCP
In previous RMX versions, media such as video, audio, content and FECC is transmitted
using the UDP transport protocol. In version 7.7, media is automatically transmitted
through TCP when UDP, the default transport protocol, is not available. Media over TCP is
supported using the Microsoft ICE environment.
The media transport protocol type (UDP/TCP) is displayed in the
Participant Properties -
Channel Status - Advanced
dialog box.
The media transport protocol type is displayed for the following IP addresses:
•
RMX IP Address
•
Participant IP Address
•
ICE RMX IP Address - only when ICE is functional
•
ICE Participant IP Address - only when ICE is functional
Network Error Recovery
When a short network error occurs, for example 5 seconds, RMX automatically recovers,
enabling calls in Microsoft Lync to continue the video or audio conference without
disconnecting. However, when a longer network error occurs, the call is disconnected. The
presence status mode is correctly updated from
Busy
to
Available
. There is no configuration
required for this procedure.
SIP Dialog Recovery
RMX has the ability to automatically recover from a SIP dialog failure, which can occur in
long duration calls in Meeting Rooms using the Microsoft Lync client. There is no
configuration required for this procedure.
Содержание RealPresence 2000
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