An Integrated Circuit includes signal distribution circuitry and protection circuitry. Only the diamond film in the vicinity of the cutting edge can be polished first, without polishing the film of the diamond formed centrally of the rake surface andor the flank surface. The high-side device is coupled between the input terminal and an intermediate terminal. For each salesperson, on-line communication channels are monitored for the occurrence of a communications involving a customer associated with the salesperson and including a target item defined by the salesperson.