
DMA OperationsGuide  Active Calls
78 Polycom, Inc.
Bandwidth  The table at the top lists each throttle point that the call 
traverses and shows its: 
•Bit rate limit per call (kbps) 
•Total capacity (kbps) 
•Used bit rate (kbps) in each class of service 
•Weight (%) 
•Territory 
If the throttle point is a subnet, site, or site link, a link 
takes you to the corresponding site topology page with 
the throttle point entity selected. 
Below the table, the data used in bandwidth processing 
is displayed (all bit rates are kbps): 
•Formal maximum bit rate limit — the maximum 
allowed bit rate considering the per call bit rates of 
each throttle point, but not considering total capacity 
or current usage 
•Available bit rate capacity in each class of service 
and for the call’s class 
•Class of service for the call 
•Minimum downspeed bit rate 
•Available bit rate limit (%) — the maximum 
percentage of remaining bandwidth at a throttle 
point that will be given to any one call (configurable 
on the Call Server Settings page) 
•Requested bit rate 
•Final bit rate 
Call Events  Lists each event in the call and its attributes. 
When the system is operating as a SIP proxy server, the 
list includes all SIP signaling messages except 100 
TRYING. 
Hover over an attribute label to see a description. Click 
Show Message to see the signaling message. Click 
Show QoS Data to see detailed quality of service 
statistics. 
Property Changes  Lists each property change in the call, showing the 
value, time, and sequence number of the associated 
event. 
QoS  Quality of service data is only available if one of the 
endpoints is a registered H.323 endpoint that supports 
IRQs. This tab displays a graph showing how QoS 
varied during the call. The horizontal scale and 
frequency of data points (dots on the lines of the graph) 
vary based on the length of the call. 
Hover over a data point to see the value at that point. 
Table 5-2 Call Details dialog box  (continued)
Tab/Field/Column  Description