Panasonic KX-NS1000 Installation Manual page 36

2.3.3 System Capacity
Extension (Virtual Extension Card)
IP-PT and IP Softphone
SIP Phone
Extension (Physical Extension Card)
The maximum number of extension ports is 640 per PBX, and the maximum number of Unified Messaging ports is 24 per PBX. When
*1
24 ports for Unified Messaging are fully activated on the Master unit, the maximum number of extension ports will be less than 640.
One Unified Messaging port is equal to 10 extension ports. Therefore, when all Unified Messaging ports are activated, only up to 400
extensions are available. This condition does not apply for Slave units.
DSP Resources
DSP cards provide digital signal processor (DSP) reference resources, and the PBX uses the resources to
perform various PBX operations. The following illustration shows the concept of DSP resource usage. More
36 Installation Manual
Type Stand-alone System
640
128
640
2
One-look Network
1000
1000
1000
32