Note
• Calls cannot be made or received when all of the DSP resources are being used.
• The number of required resources must not exceed the DSP resources installed to the PBX.
• For details about the DSP Resource Advisor, refer to
"9.33.1.1 PBX Configuration—[1-5-1]
Configuration—DSP Resource—Setting—DSP Resource Advisor" in the PC Programming Manual.
• For information about installing DSP cards, refer to "4.3.3 DSP Cards".
• The number of available DSP resources is not restricted by any activation keys.
DSP Resource Reservation
DSP resources can be reserved for certain operations to avoid lack of resources for particular operations.
The following examples show cases of allocating and reserving DSP resources.
Note
For details about reserving DSP resources, refer to
"5.1.16 DSP Resource Advisor" and "5.1.17 DSP
Resource Reservation" in the Feature Manual, and "9.33.1.1 PBX Configuration—[1-5-1]
Configuration—DSP Resource—Setting—DSP Resource Advisor" in the PC Programming Manual.
Example
In this example, the DSP M (127 DSP resources) is installed and resources are reserved for the following
operations:
Operation Required Resources
VoIP (G.711) Calls 40
Conference CO Lines 10
Unified Messaging 8
Two-way Recording Operations 3
OGM Operations 10
UM Tone (Fixed) 2
*1
*1
Because the system reserves 2 resources for internal system functions, the total amount of available resources indicated will be 2
less than the total resources of the installed card.
Reserved Resources
(40 x 1) + (10 x 0.5) + {(8-3) x 1.3} + (3 x 2.3) +
(10 x 2) + 2
= 80.4
Free Resources
= 127 - 80.4
= 46.6
Note
This is an example for a PBX without any stacking Expansion Unit.
Expandable Resources with Expansion Unit
The following table shows the types of resources that are available when an Expansion Unit used with the
Main Unit.
Document Version 2016-03 Installation Manual 51
2.3.3 System Capacity
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