RMX 2000 Administrator's Guide Version 7.6.1 - Polycom

Polycom RMX 1500/2000/4000 Administrator’s Guide
• 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.
H.264 High Profile Support in CP Conferences
The H.264 High Profile is a new addition to the H.264 video protocol suite. It uses the most
efficient video data compression algorithms to even further reduce bandwidth requirements
for video data streams.
Video quality is maintained at bit rates that are up to 50% lower than previously required.
For example, a 512Kbps call will have the video quality of a 1Mbps HD call while a 1Mbps
HD call has higher video quality at the same (1Mbps) bit rate.
Guidelines
• H.264 High Profile is supported with MPMx cards only.
• H.264 High Profile is supported in H.323, SIP and ISDN networking environments.
• H.264 High Profile is supported in Continuous Presence conferences at all bit rates, video
resolutions and layouts.
• H.264 High Profile is the first protocol declared by the RMX, to ensure that endpoints
that support the protocol will connect using it.
H.264 High-Profile should be used when all or most endpoints support it.
Setting minimum bit rate thresholds that are lower than the default may affect the video
quality of endpoints that do not support the H.264 High Profile.
• For monitoring purposes, the RMX and endpoint H.264 High Profile capability is listed
in the Participant Properties - H.245 and SDP tabs for H.323 participants and SIP
participants respectively.
For more information see "IP Participant Properties” on page 12-15.
• H.264 High Profile is not supported:
— In MPM and MPM+ card Configuration Modes
— For Content Sharing
— As an RSS Recording link
— With Video Preview
2-2 Polycom, Inc.