Cisco ISDN GW 3241 Manuel d'utilisateur télécharger pdf (Page 21)

Different video conferencing scenarios

Sharing data with the MCU and two or more endpoints

In this scenario two or more endpoints can be holding a video conference via the MCU (three in the

following diagrams). In addition several PCs may be streaming the conference. Another PC is contributing

a video content channel to the conference; for example to show a PowerPoint presentation.

The data channel can come from a PC connected directly to a Codian MCU using VNC (top diagram) or

connected to an endpoint which then sends the presentation using the H.239 protocol (not all endpoints

support the direct connection of a computer). Virtual Network Computing or VNC is an open standard

commonly used for remotely controling one PC from another.

To display the data channel, endpoints can watch using the H.239 protocol. For endpoints that do not

support H.239, Codian MCUs can display the data in a standard video pane.

Figure 6: Sharing data with the MCU and two or more endpoints

endpoint

IP network

endpoint

MCU

Computer contributing

the data channel

via VNC

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Cisco ISDN GW 3241 Manuel d'utilisateur Page 21