4.2.5 Installing/Removing the Optional Service Cards
Installing an Optional Service Card in the Free Slot
In the PBX's Free slot, you can install one of the following cards: SLC2/LCOT2, SLC2/BRI4, SLC2/PRI30,
SLC2/PRI23, STACK-M. Some of the optional service cards require DIP switch settings which must be done
before installing the card. For details, refer to the description of each optional service card in "4.5 Physical
Trunk and Extension Cards", "4.6.1 STACK-M Card (KX-NS0130)", and "4.7 The Doorphone Card".
Remove the front cover plate for the Free slot.