Content Transmission Modes - Polycom RMX 1500 Administrator's Manual

Polycom RMX 1500/2000/4000 Administrator's Guide

Content Transmission Modes

The Content channel can transmit one of the following modes:
•
•
•
The highest common Content bit rate is calculated for the conference each time an endpoint
connects. Therefore, if an endpoint connects to an ongoing conference at a lower bit rate
than the current bit rate, the Content bit rate for the current conference is re-calculated and
decreased.
Bit rate allocation by the MCU is dynamic during the conference and when the Content
channel closes, the video bit rate of the People conference is restored to its maximum.
During a conference the MCU will not permit an endpoint to increase its bit rate, it can
however change its Content resolution. The RMX can decrease the allocated Content bit rate
during a conference.
Table 2-8 summarizes the bit rate allocated to the Content channel from the video channel in
each of the three Content Transmission Modes:
Content
Transmission
Mode
Graphics
Hi Resolution
Graphics
Live Video
2-26
Graphics – default mode, for standard graphics
Hi-res Graphics – requiring a higher bit rate, for high quality display or highly detailed
graphics
Live Video – highest bit rate, for video clips or live video display
Table 2-8
64/
128
96
0 64
0 64
0 64
Bit Rate Allocation to Content Channel per Conference Line Rate
Bit Rate Allocation per Conference Line Rate (kbps)
768
256 384 512
823
64 128 128 256
128 192 256 384
128 256 384 512
1472
1024
1728 2048 4096
1152
1920
256 256 512 1152
384 512 768 1536
768 768 1152 1536
6144
1536
1536
1536
Polycom, Inc.