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  | MGC WebCommander User’s Guide | 
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  | Table   | ||
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  | Option | Description  | |
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  | Video Session  | Select the appropriate Video Session:  | |
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  | Video Switching - To set a conference in which all  | |
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  | the participants use the same video and audio  | |
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  | formats, by setting the communication parameters to  | |
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  | the common capabilities. Whenever a participant  | |
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  | starts to speak, he/she appears on all screens as the  | |
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  | conference is a voice activated video switching  | |
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  | conference. All participants view the participant who  | |
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  | is the speaker. Up to 16 or 30 participants (if at least  | |
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  | one Audio Bridge is set to 1/30) can take part in a  | |
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  | Video Switching conference using the standard  | |
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  | Audio card. Up to 100 participants at 128Kbps can  | |
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  | take part in a conference running on the Audio+  | |
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  | card.  | 
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  | Transcoding - To set a conference in which  | |
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  | participants use different video, audio and data  | |
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  | formats, maintaining the highest video and audio  | |
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  | capability each participant can achieve with his/her  | |
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  | codec. Like Video Switching, the current speaker is  | |
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  | displayed on all terminals.  | |
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  | Transcoding is performed on the following:  | |
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  | •  | Line rate  | 
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  | •  | Audio algorithm  | 
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  | •  | Video format  | 
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  | •  | Frame rate  | 
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  | •  | Different data rates  | 
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  | Continuous Presence (CP) - A Continuous | |
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  | Presence conference is a conference in which  | |
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  | several participants can be viewed simultaneously.  | |
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  | Each participant uses their own codec capabilities,  | |
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  | thus maintaining the highest video, audio and data  | |
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  | capability that can be achieved.  | |
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