As tenants come and go in a commercial building, the cabling infrastructure sometimes leaves behind abandoned Cat5, Cat6 and coax cabling. All that needs to happen is for the new tenant to request a reconfigured layout that relocates the main wall closet. Or, sometimes the old tenant will cut away the cabling in order to take the patch panels with them. If possible, keep the wall closet location. And always offer to buy the patch panels from a departing tenant.