Panasonic’s VB-44512 provides easy connection from the cabinet to the MDF via standard female 25-pair cables. This card supports Loop Start, Ground Start, and DID trunks. Since each of these trunk cards uses modular connectors, connection can be made directly to the modular connectors, bypassing the MDF if so desired. Each Trunk MDF Interface Card can support up to three trunk cards (24 trunk circuits). Up to 10 Trunk MDF Interface Cards can be installed in each cabinet. MDF cards attach to the sides to of the cabinet and are hidden by the housing for a neat appearance.