Service
Number of Ports
Load (Busy Ratio %)
Total DSP Cost
18.55
*1
DSP Cost = Number of Ports
´
Resource cost per port (unit)
´
Load
In the example above, the total DSP cost is 18.55. In such an environment, a PBX with a DSP S card (max.
63 DSP resources) would be sufficient.
Example 2: Call Centre
In a call centre, both the number of trunks and number of extensions are likely to be very high. Also, since
employees are constantly receiving calls, the system load will be high. Furthermore, calls are often recorded
at call centres to provide quality-of-service monitoring.
Service
Number of Ports
Load (Busy Ratio %)
Trunk using G.729 codec
8
50%
8.8
Trunk using G.711 codec
64
80%
51.2
Extension using G.729 codec
32
50%
35.2
Extension using G.711 codec
64
80%
51.2
IP-CS using G.729 codec
8
50%
8.8
Unified Messaging
8
—
10.4
Two-way Recording
4
—
9.2
OGM
4
—
8.0
Conference
12
—
6.0
Total DSP Cost
188.8
*1
DSP Cost = Number of Ports
´
Resource cost per port (unit)
´
Load
In this example, the total DSP cost is 188.8. In such an environment, a PBX with a DSP L card (max. 254 DSP
resources) would be sufficient.
Conditions
•
Calls that are established via P2P (
®
5.2.3 Peer-to-Peer (P2P) Connection) do not use the PBX’s DSP
resources, so they may be excluded from the usage calculation.
PC Programming Manual References
9.38 PBX Configuration—[1-5] Configuration—DSP Resource
538
Feature Guide
5.5.4 DSP Resource Usage
Summary of Contents for KX-NS500
Page 14: ...14 Feature Guide Table of Contents...
Page 15: ...Section 1 For Your Safety Feature Guide 15...
Page 18: ...18 Feature Guide 1 1 1 For Your Safety...
Page 19: ...Section 2 Call Handling Features Feature Guide 19...
Page 57: ...632 Maximum Number of Agents Feature Guide 57 2 2 2 Incoming Call Distribution Group Features...
Page 107: ...User Manual References 1 2 1 Basic Calling Feature Guide 107 2 5 4 Trunk Call Features...
Page 193: ...User Manual References 1 4 2 Holding a Call Feature Guide 193 2 13 1 Call Hold...
Page 324: ...324 Feature Guide 2 30 2 Outgoing Message OGM...
Page 325: ...Section 3 Unified Messaging System Feature Guide 325...
Page 375: ...Section 4 Network Features Feature Guide 375...
Page 464: ...464 Feature Guide 4 3 6 Network ICD Group...
Page 465: ...Section 5 System Configuration and Administration Features Feature Guide 465...
Page 560: ...560 Feature Guide 5 6 7 PING Confirmation...
Page 561: ...Section 6 Appendix Feature Guide 561...
Page 578: ...578 Feature Guide 6 5 2 PFMPR Software File Version 004 2xxxx...
Page 579: ...Feature Guide 579 Notes...