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| MGC WebCommander User’s Guide |
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| Table | |
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| Option | Description |
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| Interlaced Video is enabled only in the Video | |
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| Switching mode. |
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| improves the video quality in Video Switching (VSW) |
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| conferences, set to NTSC or PAL (4CIF) resolution. |
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| Select either 50 Fields (PAL) or 60 Fields (NTSC). |
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| Second (FPS) for NTSC and 50 FPS for PAL |
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| systems. The interlaced video mechanism takes two |
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| separate video frames and merges them into a |
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| single frame. For example, NTSC is transmitted at |
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| 30 FPS and during the process of transmission |
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| frame A consists of “240 even” lines and frame B |
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| consists of “240 odd” lines. |
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| When frames A and B are merged into a single |
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| frame, the result is total number of 480 lines. The |
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| totals of their frame speed are also added together, |
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| 30FPS + 30FPS, resulting in a frame resolution of |
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| 60FPS. |
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| Note: When a conference is set to any |
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| option, endpoints sending a |
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| resolution (for example, NTSC instead of PAL or |
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| resolution, connect as secondary (Audio Only). |
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| Dual Stream Mode | In this mode, one of the endpoints sends two video |
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| streams: Video and data. The video streams are |
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| handled differently by the receiving endpoint. The |
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| different streams may be shown on separate |
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| screens. |
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| Select one of the following options: |
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| None - The Dual Video mode is unavailable. In such |
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| a case Video Protocol is set to Auto. |
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| H.239 and People+Content - H.239 and |
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| People+Content are very similar in function, but |
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| differ in the type of signaling used for each protocol. |
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| People+Content is the Polycom proprietary protocol |
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| while H.239 is the industry standard. |
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