Polycom DOC2702A Manuel D’Utilisation

Chapter 4-Additional Conferencing Information

Polycom, Inc.

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Only one preview window can be displayed for a single conference and up to four 

preview windows can be displayed for each media card on different workstations (one 

per workstation and one per conference). For example, if the RMX contains two media 

cards, and there are 5 conferences running on the RMX, if five conferences are running 

on the same media card, only four conferences can be previewed from four different 

workstations. If four or less conferences are running on one media card and the 

remaining conferences are running on the other media card, all five conferences can be 

previewed.

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Live video that is shown in the preview window does not include the Content when it 

is sent by the participant.

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Video Preview is supported in cascaded conferences.

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If the video preview window is opened when the IVR slide is displayed to the 

participant, it will also be displayed in the video preview window.

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Video Preview is not supported in RMX Manager application.

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Video Preview is supported with H.264 High Profile in CP conferences only.

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Video Preview is not supported for endpoints using the RTV protocol.

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Video Preview is disabled in encrypted conferences.

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Video preview cannot be displayed when the participant’s video is suspended.

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Participant’s video preview and the CMAD window cannot be open and running 

simultaneously on the same PC as both require the same DirectDraw resource.

To be able to display the video preview window, the following minimum requirements 

must be met:
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Windows XP and later

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Internet Explorer 7

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DirectX is installed

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DirectDraw Acceleration must be enabled and no other application is using the video 

resource

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Hardware acceleration must be enabled

In Windows, click Start > Run.

The Run dialog box opens.

In the Open field, type dxdiag and press the Enter key or click OK.

A confirmation message is displayed.