Profile: C. E. Cox Company is a manufacturer of cable test equipment and fixtures. Our Minitrace® is a continuity test set designed for applications in telephone switching and operating offices and it offers various features including pre-set resistance thresholds, automatic over-voltage inhibit, communication pairs & automatic offset compensation. Our communication pair is used to carry the audio signals indicating continuity. Our Unitrace&trade is a capacitance probe that will show at which end of a cable an open occurs and it can also be used to check continuity especially in repair situations.