Content; Packet Loss Compensation; Enabling Support Of The W448P Resolution - Polycom RealPresence 800s Administrator's Manual

RealPresence Collaboration Server (RMX) 800s/Virtual Edition Administrator's Guide
Video Quality
Network
Environment Tandberg
H.323 Sharpness
SIP
ISDN
*
It is recommend to set the endpoint to Motion to ensure the transmission of the higher frame rates of 25fps/30fps to
Collaboration Server.
the
‡ 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 Polycom® RealPresence Collaboration Server 800s/Virtual Edition
Administrator's Guide, "H.239 Protocol" on page 4-2"H.239 Protocol" on page 4-2.

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 Polycom® RealPresence Collaboration Server 800s/Virtual Edition
Administrator's Guide,

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
Polycom®, Inc.
Collaboration
Server
*
Sharpness
Packet Loss Compensation (LPR and DBA) AVC CP
Resolution
Line
Rate Tandberg to
Kbps Collaboration Server
384 4CIF
512 4CIF
Frame
Rate
fps Resolution
Collaboration Server
to Tandberg
15 768x448
15 768x448
Conferences.
Frame
Rate
fps
25
25
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