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Polycom RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide
4-26 Polycom, Inc.
Enter the interval in seconds between the Intra requests sent from the RMX to the
endpoint sending the Content to refresh the Content display. Refresh requests that will
be received from endpoints within the defined interval will be postponed to the next
interval.
Default setting: 5
Forcing Other Content Capabilities
•The H239_FORCE_CAPABILITIES System Flag in system.cfg gives additional control
over Content sharing:
— When the flag is set to NO (default), the RMX only verifies that the endpoint
supports the content protocols: H.263 or H.264.
— When set to YES, the RMX checks frame rate, bit rate, resolution, annexes and all
other parameters of the Content mode as declared by an endpoint during the
capabilities negotiation phase. If the endpoint does not support the Content
capabilities of the MCU, the participant will not be able to send or receive content
over a dedicated content channel.
Video Preview
RMX users can preview the video sent from the participant to the conference (MCU) and the
video sent from the conference to the participant. It enables the RMX users to monitor the
quality of the video sent and received by the participant and identify possible quality
degradation.
The video preview is displayed in a separate window independent to the RMX Web Client.
All Web Client functionality is enabled and conference and participant monitoring as well
as all other user actions can be performed while the video preview window is open and
active. Live video is shown in the preview window as long as the window is open. The
preview window closes automatically when the conference ends or when participant
disconnects from the conference. It can also be closed manually by the RMX user.
Video Preview Guidelines
• Video preview is available in AVC (CP and VSW) conferences. It is not available in SVC
Conferencing Mode.
• Video preview window size and resolution are adjusted to the resolution of the PC that
displays the preview.
• Video Preview of the video sent from the conference to the participant is shown
according to the line rate and video parameters of the level threshold to which the
participant is connected.
• In versions up to and including Version 7.2.2, only users with Administrator
authorization could request to view a video preview. In later versions, all users can
view a video preview.
• Video preview is supported with MPM+ and MPMx cards.
• Only one preview window can be displayed for each RMX Web Client connection
(workstation).