A remote processor adapted for use with a telephone system is provided according to one embodiment of the invention. A first cardiac signal and a second cardiac signal are sensed, where the first cardiac signal has a voltage. The AC current feedback path, sensing the ramping ripple current, is separate from the DC current path, sensing the lower frequency average current. A metal reinforcement member is arranged in the hollow portion of the lineal components so as to extend substantially along the entire length of the lineal components and leave an empty portion of the hollow section at each end of the lineal components, which empty portions have a length equal to at least the length of the posts of the L-shaped body. The leg support device is adjustable.