Polycom RMX 1800 Video Preview

Chapter 4-Additional Conferencing Information

Polycom, Inc. 4-21

Enter the interval in seconds between the Intra requests sent from the Collaboration

Server 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

•The H239_FORCE_CAPABILITIES System Flag in system.cfg gives additional control

over Content sharing:

—When the flag is set to NO (default), the Collaboration Server only verifies that the

endpoint supports the content protocols: H.263 or H.264.

—When set to YES, the Collaboration Server 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.

From version 8.1, Polycom CCS (Content Collaboration Solution) Plug-in for Lync clients

allows Lync clients to receive and send Content on a separate channel, without having to use

the video channel. Content is transmitted using SIP BFCP.

For more information, see Appendix4, “Exclusive Content Mode”on page 4-16.

Video Preview

Collaboration Server 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

Collaboration Server 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 Collaboration Server

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

Collaboration Server user.

• 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.

• Only one preview window can be displayed for each Collaboration Server Web Client

connection (workstation).