manual slot

Normal Configuration 3 cards in first 3 slots ( 24+24+16 = 64 ports ) with Blank face plate in slot no. holly jp slot 4 But you can insert an extra add on card of 16/24 ports in slot-4 Calculate Inner VLANs according to equipped cards and configure the inner VLANs in DSLAM on Uplink Port on Subscriber ports properly