Cisco TelePresence System Codec C90 and Profile 65” Dual using C90
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Administrator guide
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Optimal definition profiles
Under ideal lighting conditions the bandwidth requirements can be substantially reduced with the optimal definitions profiles.
Generally, we recommend the Optimal Definition set at Normal.
If lighting conditions are good we recommend that you test the endpoint on the various Optimal Definition settings before deciding on a profile.
Go to Advanced configuration (menu on screen or web interface) to set the optimal definition profile:
•Navigate to Video > Input > Source [1..n] > OptimalDefinition > Profile and select a profile.
You can set a resolution threshold below which the maximum frame rate will be 30 fps.
Go to Advanced configuration (menu on screen or web interface) to set the threshold:
•Navigate to Video > Input > Source [1..n] > OptimalDefinition > Threshold60fps and select a threshold.
The video input quality settings must be set to Motion to ensure the Optimal Definition to work. With the video input quality set to Sharpness, the endpoint will transmit the highest resolution possible, regardless of frame rate.
High (720p60)
Typically used in dedicated video conferencing rooms. Requires good lighting conditions for a good overall experience.
Under ideal conditions the bandwidth requirements can be reduced by up to 50%.
Medium (w576p60)
Typically used in rooms with better than normal, and consistent lighting.
The bandwidth requirements can be reduced by up to 25%.
Normal (w448p60)
This setting is typically used in office environments where the environment is normal to poorly lit.
Generally, we recommend the Optimal Definition set at Normal.
Go to Advanced configuration (menu on screen or web interface) to set the input quality:
•Navigate to Video > Input > Source [1..n] > Quality and set the video quality parameter.
You can read more about the video settings in the Advanced configuration settings chapter. Go to: 
Advanced configuration
Optimal definition profiles for systems supporting 1080p
| w288p30 | w448p30 | w576p30 | 720p30 | 1080p30 |
Normal | 256 kbit/s | 512 kbit/s | 768 kbit/s | 1152 kbit/s | 2560 kbit/s |
Medium | 128 kbit/s | 384 kbit/s | 512 kbit/s | 1152 kbit/s | 1920 kbit/s |
High | 128 kbit/s | 256 kbit/s | 512 kbit/s | 768 kbit/s | 1472 kbit/s |
Optimal definition profiles for systems supporting 720p60
| w144p60 | w288p60 | w448p60 | w576p60 | 720p60 |
Normal | 128 kbit/s | 512 kbit/s | 1152 kbit/s | 1472 kbit/s | 2240 kbit/s |
Medium | 128 kbit/s | 384 kbit/s | 768 kbit/s | 1152 kbit/s | 1920 kbit/s |
High | 128 kbit/s | 256 kbit/s | 512 kbit/s | 768 kbit/s | 1152 kbit/s |
D14635.05 Profile C90 and Codec C90 Administrator Guide TC4.1, February 2011. | 77 | www.cisco.com |
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