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RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator’s Guide
Polycom®, Inc. 138
Video Output to Tandberg Endpoints - Aspect Ratio 4:3
* It is recommend to set the endpoint to Motion to ensure the transmission of the higher frame rates of 25fps/30fps to
the
Collaboration Server.
‡ MXP 990/3000 endpoints transmit 576x448 pixels. Other MXP endpoints may transmit other resolutions
eg. CIF.
Content
Sharing and receiving Content is supported.
Bandwidth allocated to the Content channel during Content sharing may cause the video resolution to be
decreased as from w448p to w288p.
When Content sharing stops and the full bandwidth becomes available, video resumes at the previous
w448p resolution.
For more information see the Video Preview (AVC Participants Only).
Packet Loss Compensation
If there is Packet Loss in the network and Dynamic Bandwidth Allocation (DBA) is activated, allocating
bandwidth for Lost Packet Recovery, video resolution decreases from w448p to w288p.
When Packet Loss ceases and DBA no longer needs to allocate bandwidth for Lost Packet Recovery, the
full bandwidth becomes available and video resumes at the previous w448p resolution.
For more information see the Packet Loss Compensation (LPR and DBA) AVC CP Conferences.
Enabling Support of the w448p Resolution
w448p resolution support for Tandberg endpoints requires setting of the following entities:
● Tandberg endpoint
● Collaboration Server flags
● Collaboration Server Conference Profile
Network
Environment
Video Quality
Line
Rate
Kbps
Resolution
Frame
Rate
fps
Resolution
Frame
Rate
fps
Tandberg
Collaboration
Server
Tandberg to
Collaboration Server
Collaboration Server
to Tandberg
H.323
SIP
ISDN
Motion Sharpness 384 576x448
‡ 25 768x448 25
512 576x448
‡ 25 768x448 25
H.323
SIP
ISDN
Sharpness
* Sharpness 384 4CIF 15 768x448 25
512 4CIF 15 768x448 25