Nortel BCM 3.7, Manual, Page: 628 / 1004

628 Configuring the MSC resources
N0008589 3.3
Understanding the MSC Minimum and Maximum values
The MSC Configuration allows you to determine how the resources are assigned on your Business
Communications Manager.
In some Business Communications Manager systems, the total number of features and devices that
require resources exceeds the number of resources that are available. To address this issue,
Business Communications Manager allows you to share the resources. By changing minimum and
maximum values for each component you can fine tune this sharing.
Minimum
The minimum value is the number of resources that are always assigned to a component. You use
this number to ensure a base level of service for a specific component. For example, to ensure that
at least four people can be using voicemail at all times, you would enter four as a minimum value
for the Voice Port component.
The resources that are not assigned using the minimum values are shared by the components. If a
component needs additional resources, it can use some of the shared resources to provide service
during the busy period. This method of sharing resources allows your Business Communications
Manager system to adapt to the changing demands for services.
Maximum
The maximum value is the maximum number of resources that can be used by a component. You
use this number to ensure a single component does not consume all of the shared resources.
The MSC Configuration you choose greatly affects the performance of your Business
Communications Manager system. Make sure you consider the needs of your users, including peak
usage times, when selecting the Minimum and Maximum values. The following table describes the
advantages and disadvantages of changing these values.
Table 151 Advantages and Disadvantages of Minimum and Maximum values
Value Advantage Disadvantage
Increasing
Minimum Value Increases the guaranteed level of service for a
component. The DSP resources you assign as a
Minimum are always available to the users of
this component. Decreases the flexibility of DSP resource
sharing. DSP resources that are assigned to the
Minimum value are not shared with other
components. If you set the Minimum level too
high, other components may not be available
due to a lack of available DSP resources.
Decreasing
Minimum Value More DSP resources are available to share with
other components. When there is a large pool of
shared DSP resources, Business
Communications Manager more readily adapts
to changing component use. Lower guaranteed level of service for this
component. If the Minimum value is too low, it is
possible that some users will not be able to
access this component when other components
are in heavy use.
Increasing
Maximum Value Allows this component to use more of the
shared DSP resources during times of peak use.
This allows more people to use this component
at the same time. During times of peak use, this component may
consume all of the shared resources. This may
cause other components to be unavailable to
users.
Decreasing
Maximum Value Prevents this component from using so many of
the shared DSP resources, that other
components are unavailable. Limits the number of people that can use this
component even if sufficient DSP resources are
available.