Polycom® RMX 1800 Administrator’s Guide
3-14 Polycom, Inc.
•High Profile - Endpoints that support H.264 High Profile connect at these minimum
threshold bit rates.
Although the default minimum threshold bit rates provide acceptable video quality, the use
of higher bit rates usually results in better video quality but will require more resources.
The Base Profile and High Profile sliders operate in the same manner in Sharpness and in
Motion.
Video Resource usage is affected by the Resolution Configuration settings. The lower the line
rate threshold set for a certain resolution the more resources will be used to connect that
participant (as a higher resolution will be used).
Moving the slider of a certain resolution to the left reduces the line rate threshold required
for the endpoints to connect using that resolution (resulting in higher video quality, more
video resources). Moving the slider to the right, increases the line rate required for the
endpoint to connect using that resolution (resulting in lower video quality, less video
resources).
The following example demonstrate the usage of the sliders.
•Moving the HD720p30 resolution slider from 1024kbps to 1920kbps increases the
minimum connection threshold line rate for that resolution. Endpoints connecting at
line rates between 1024kbps and 1920kbps that would have connected at
HD 720p30 resolution will instead connect at SD 30 resolution. Each of the affected
endpoints will connect at lower resolution but will use less video resources.
•Moving the HD1080p60 resolution slider from 3584kbps to 2560kbps decreases the
minimum connection threshold line rate for that resolution. Endpoints connecting at
line rates between 2560kbps and 4096kbps that would have connected at
HD 1080p30 resolution will instead connect at HD 1080p60 resolution. Each of the
affected endpoints will connect at higher resolution but will use more video resources.