Description Features Panasonic PBX KX-NS320 Sub-frame to extend PBX Panasonic KX-NS300. There can be up to 03 frames using KX-NS320 side with the KX-NS300 frame. Built-in extensions 16 regular (analog) function displays the phone number to call. 02 card slots and 02 slots trunk extension card. Ability to equip subframe KX-NS320: 12-32 trunk extensions. Port connected to the main frame.
