
Traffic engineering
occupancy is allocated on an
Usually, the relationship between the sum of static and CP occupancy, as a function of BHCC, is linear, with a positive
Figure 69: Relationship Between Processing Occupancy and BHCC Rate
Processing Occupancy (CP + Static)
Idle
Occupancy
BHCC Rate
To determine the anticipated processor occupancy that is associated with a particular configuration, the average processing cost per call must be determined based on the anticipated volume of each type of call, and the complexity of the various call types. This average cost per call implies the slope of the line in relating static and CP occupancy to the BHCC rate. The intercept of that line, which corresponds to the
Communication Manager systems are designed to keep the sum of static and CP occupancy below a particular threshold. This is done to allow a suitable amount of processing time for system management functions.
So for a given configuration, the various types of calls to be supported are identified, and the processing cost for each call type (based upon the complexity of the call) must be assessed. That information can then be used to determine the average processing cost per call, based on the anticipated relative frequencies of the various call types. The slope of the line relating the sum of static and CP occupancy can then be determined from the average processing cost per call. The intercept of that line is determined by information such as the Communication Manager platform used, the number of endpoints administered, and so on.