Panasonic KX-NS500AG Service Manual page 137

2.3.3 System Capacity
Type and Maximum Number of Slots
The PBX supports the following type and number of slots.
KX-NS500 Mother Board
Physical Slot
Virtual Slot
For details about the available installation combination of cards, see "Trunk Option Card Installing Restrictions".
*1
KX-NS520 Mother Board
Physical Slot
*1 For details about the available installation combination of cards, see "Trunk Option Card Installing Restrictions".
Slot Type
DSP Card Slot
SD Card Slot
EXP-M Card Slot
Trunk Free Slot
Extension Free Slot
Remote Card Slot
Virtual Trunk Card
Virtual Extension Card
Virtual IP-CS Card
Slot Type
Trunk Free Slot
Extension Free Slot
Maximum Number
1
1
1
2
*1
1: If 16 ports Extension card is installed
2: If 16 ports Extension card is not installed
1
4
4
4
Maximum Number
2
*1
1: If 16 ports Extension card is installed
2: If 16 ports Extension card is not installed
2.3.3 System Capacity
Installation Manual 35