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5.5.3 DSP Resource Usage
If the PBX's resources are reserved as shown in the example above, the resources required to meet the
numbers of operations listed in the "Minimum performance" column are guaranteed to be available. Note,
however, that for an operation such as a conference call, DSP resources are required for each individual
conference party in addition to the resources required for the conference trunk itself. Therefore, if all 40 VoIP
units as well as all free resources are being used, a new conference call cannot be established, even if
sufficient conference resources are available.
Conditions
•
The total number of resources provided by each type of DSP card is as follows:
–
DSP S card: 63
–
DSP M card: 127
–
DSP L card: 254
PC Programming Manual References
9.5.1 PBX Configuration—[1-1] Configuration—Slot—Site Property—Main—DSP Conference—DSP
Conference Priority
9.33 PBX Configuration—[1-5] Configuration—DSP Resource
5.5.3.2 DSP Resource Advisor
Description
Web Maintenance Console provides a tool for calculating the number of resources required for a given set
of operating conditions. The Web Maintenance Console user provides information such as the number of
ports for a given resource (e.g., 16 extension ports using the G.729 codec) and the expected usage load
(e.g., 50% busy), and the resource advisor calculates the number of DSP resources required to meet those
conditions.
This tool can be used in offline mode to simulate various PBX configurations and usage cases to help
determine the number and size of DSP cards required.
This tool will also recommend which and how many resources to reserve for various features
(→ 5.5.3.1 DSP Resource Reservation). The recommended settings can be applied immediately from the
resource advisor tool.
The resource usage can be calculated using the following types of services and features:
Trunk using G.729 codec
Trunk using G.711 codec
Non-IP trunk (ISDN trunk, analogue trunk, etc.)
Extension using G.729 codec
Extension using G.711 codec
IP-CS extension using G.729 codec
IP-CS extension using G.711 codec
Unified Messaging
Two-way Recording
OGM
*1
Conference trunk
The DSP costs of the extensions/trunks involved in the operation are not included in the per-unit DSP resource count.
*1
420
Feature Manual
Service/Feature
*1
*1*2
*1
DSP Resources per Unit
2.2
1
1
2.2
1
2.2
1
1.3
2.3
2
0.5
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