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Polycom® RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide
4-58 Polycom, Inc.
Horizontal Striping
Horizontal Striping is used by the Collaboration Server in order to prevent cropping and
preserve the aspect ratio of video for all Telepresence Modes.
Cropping
Cropping is used by the Collaboration Server in order to preserve the aspect ratio of video for
all Telepresence Modes.
Cropping is controlled by the ITP_CROPPING system flag in the system configuration,
providing different cropping options according to the endpoints participating in the
Telepresence conference.
By default, the flag is set to ITP. In this mode, the area to be stripped is cropped equally
from the top and the bottom (as shown in the example below). For more details, see
"Modifying System Flags” on page 22-1.
Gathering Phase with ITP Room Systems
When a conference is configured to include a Gathering Phase, only one endpoint name is
displayed for the ITP room in the connected participant list of the Gathering slide. The ITP
room endpoint with the suffix “1” in its name receives the Gathering slide.
Aspect ratio for standard endpoints
Standard endpoints (non-ITP) receive video from the Collaboration Server with the same
aspect ratio as that which they transmitted to the Collaboration Server.
Skins and Frames
When Telepresence Mode is enabled, no Skin is displayed and the system uses a black
background. Frames around individual layout windows and the speaker indication are
disabled.
16:9
4:3
Horizontal Striping
4:3
16:9
Symmetric Letter box
Cropping