Slot type Card Name Maximum Number
MCSLC16 1
*1
You can install one DPH2 card and one of the Trunk card.
*2
For Extension Slot, you need to select Pattern 1 or Pattern 2.
DLC16 or MCSLC16
card can be installed in first Extension Slot only.
If you install DLC16 or MCSLC16 card in first Extension slot, you cannot install DHLC4, DLC8 or MCSLC8 in the second Extension
slot.
Cards Installed in Virtual Slots
Card type Card Name Maximum Number
Virtual Trunk Card 4
V-IPGW16 2
V-SIPGW16 4
Virtual Extension Card 4
V-IPEXT32 4
V-SIPEXT32 4
V-UTEXT32 4
Virtual IP-CS Card V-IPCS4 8
For KX-NS520 Physical Slot
Slot type Card Name Maximum Number
Pre-installed MCSLC16 1
Trunk/Doorphone Slot DPH2 1
LCOT6 2
BRI4 2
BRI2 2
PRI23 1
PRI30/E1 1
Extension Slot
*1
(Pattern 1) 2
DHLC4 2
DLC8 2
MCSLC8 2
(Pattern 2) 1
DLC16 1
Installation Manual 47
2.3.3 System Capacity
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