Polycom RealPresence 1800 Administration Manual page 254

Traffic Shaping System Flags
Flag Name
ENABLE_RTP_TRAFFIC_SHAPING
TRAFFIC_SHAPING_MTU_FACTOR
VIDEO_BIT_RATE_REDUCTION_PERCENT
PCM_FECC System Flag
Flag Name
PCM_FECC
Polycom, Inc.
Description
Indicates whether traffic shaping, which is responsible for
flattening packet bursts within 100 msec time intervals, is
enabled.
When set to YES, traffic shaping is applied to all ports,
resulting in some port capacity reduction in MCUs with
MPMRx cards.
When set to NO, traffic shaping is disabled.
Default value: NO
Possible values: YES/NO
Capacity Reduction During Traffic Shaping
Used for the MTU (Maximum transmitting Unit - the size of
transmitted packets) dynamic calculation:
New MTU = video bit
rate/TRAFFIC_SHAPING_MTU_FACTOR
where the new MTU value is guaranteed to be a minimum of
410, and a maximum of 1460 (MAX_MTU). The purpose of
this calculation is to match video rate in outgoing video to call
rate, yet force lower encoder bit rates to avoid overflow.
This flag is applicable only when traffic shaping is enabled ().
Default value: 800
Range: 0-5000, where 0 signifies no change in MTU
Indicates the percentage of actual reduction in bit rate sent
from the RealPresence Collaboration Server to the endpoint
(negotiated bit rate is not reduced). This flag is applicable only
when traffic shaping is enabled.
Default value: 15
Range: 0-60
ENABLE_RTP_TRAFFIC_SHAPING
Description
Determines whether the DTMF Code, ##, the Arrow Keys
(FECC), or both will activate the PCM interface. In addition,
use this flag to disable the PCM.
Default value: YES
Possible Values: YES/NO
System Flags
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