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Polycom RMX 2000/4000 Administrator’s Guide
2-5
Video Display with CIF, SD and HD Video Connections
Although any combination of CIF, SD and HD connections is supported
in all CP conferences, the following rules apply:
• In a 1X1 Video Layout:
— SD: If the speaker transmits CIF, the MCU will send CIF to all
participants, including the SD participants. In any other layout
the MCU will transmit to each participant at the participant’s
sending resolution.
— HD: The MCU transmits speaker resolution (including input
from HD participants) at up to SD resolution. If 1x1 is the
requested layout for the entire duration of the conference, set the
conference to HD Video Switching mode.
• In asymmetrical Video Layouts:
— SD: A participant in the large frame that sends CIF is displayed
in CIF.
— HD: Where participants’ video windows are different sizes, the
RMX transmits HD and receives SD or lower resolutions.
• In panoramic Video Layouts:
— SD: Participants that send CIF also receive CIF.
— HD: the RMX transmits HD and receives SD or lower
resolutions, the RMX scales images from SD to HD resolution.
Setting the Maximum CP Resolution for Conferencing
The maximum CP resolution of the system is determined by the
MAX_CP_RESOLUTION system flag. The default setting of the flag is
HD 1080.
The flag values determine the maximum CP capability that each endpoint
can declare:
Table 2-2 System Flag – MAX_CP_RESOLUTION Values
Flag Value
MPM MPM+
Each endpoint can declare capability up to:
HD1080 HD HD1080
HD720 HD HD720