A medical device for severing and removing small amounts of internal tissue for biopsy sampling or other purposes is disclosed. The method further includes transmitting the plurality of electronic signals via at least one intervening stage of circuitry, computing a second at least one data-signature value based, at least in part, on the plurality of electronic signals, and comparing the first at least one data-signature value the said second at least one data-signature value. The switch sends an activate call monitoring data message and a call monitoring alert signal to the customer premises equipment.