Polycom RMX 2000/4000 Administrator’s Guide

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 2-2System Flag – MAX_CP_RESOLUTION Values

Flag Value

MPM

MPM+

 

 

Each endpoint can declare capability up to:

 

 

 

 

HD1080

HD

HD1080

 

 

 

HD720

HD

HD720

 

 

 

2-5

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Polycom 2000/4000 Video Display with CIF, SD and HD Video Connections, Setting the Maximum CP Resolution for Conferencing