146 Available Data

7.5.1. Enterprise Calculations

The ICR can simply total some statistics to obtain enterprise-wide
values. For example, to obtain the number of agents available for an
enterprise skill group, the ICR adds the number of agents available for
each peripheral skill group that is a member of the enterprise skill group.
If a value is an average or a calculated value, such as the Average
Handle Time or Expected Delay for an enterprise service, the ICR
cannot simply sum or average the values of the member peripheral
services. For example, in order to calculate the Average Handle Time for
an enterprise service, the ICR must total the handle time for the member
peripheral services and divide it by the total number of calls handled for
the member peripheral services.
In addition, because a call is usually routed to the peripheral service that
has the minimum expected delay within an enterprise service, the
Expected Delay for an enterprise service is equal to the minimum of the
expected delays for the member peripheral services.
Figure 14 shows some examples of calculations for an enterprise
service:
Calls in progress = sum(Calls in progress for all members)
Average handle time = sum(Handle time for all members) /
sum(Calls handled for all members)
Expected delay = min(Expected delay for all members)
Service level = sum(ServiceLevelCalls for all members) /
sum(ServiceLevelCallsOffered for all members)
Figure 14: Enterprise Service Calculation Examples
7.6. Trunk Group Data
The ICR tracks data for each trunk group coming in to a switch. A trunk
group is a collection of telephone lines that are associated with a single
peripheral and used for a common purpose.
Trunk group data are stored in the Trunk_Group_Real_Time and
Trunk_Group_Half_Hour tables. Trunk group data include data that are
related to trunk usage and availability, such as:

Trunks in service. The number of trunks in the trunk group that are

functional.

All trunks busy. The total time in seconds that the trunk group was

in a state when all trunks were in use.

Trunks idle. The number of trunks in the trunk group that are non-

busy, or idle.