Panasonic KX-NS500 Installation Manual page 71

4.2.5 Installing/Removing the Optional Service Cards
2.
Holding the rear end of the card, pull the card in the direction of the arrows.
KX-NS500 KX-NS520
Extension Card Slots Trunk Card Slots Extension Card Slots Trunk Card Slots
Installing an Optional Service Card in the Free Slot
In the Main Unit KX-NS500 and Expansion Unit KX-NS520, there are Free slot for Trunk/Doorphone cards and
Free slot for Extension cards. In Free slot for Trunk/Doorphone card, you can install the following cards: LCOT6,
PRI30/E1 Doorphone card. In Free slot for Extension card, you can install the following cards: DHLC4, DLC8,
DLC16, MCSLC8, MCSLC16. For details, refer to the description of each optional service card in "4.5 Physical
Trunk and Extension Cards", and "4.7 The Doorphone Card".
Installation Manual 71