Abstract: A quick-disconnect connector assembly for a communication circuit protector device having at least one over-voltage protector unit including first and second power electrodes and a ground electrode, comprising a printed circuit board upon which the over-voltage protector units are mounted, a jack mounted on the circuit board having a contact for each power electrode, and printed circuit leads electrically connecting each contact with each power electrode, whereby an electrical output telephone cord having a plug corresponding to the jack is adapted to be received in electrical communication with the jack.

Abstract: A plurality of miniaturized auxiliary line switching circuits on circuit boards adapted to be mounted in existing space on a main distributor frame of telephone switching equipment, particularly the Stromberg Carlson XY line finder equipment. Each auxiliary circuit includes a miniaturized line relay coil, cut-off coil and lock-out coil with circuitry for connecting to the eleventh pins on the wire bank of the XY switching equipment. The circuitry also includes a first indicator lamp circuit to indicate normal use of each auxiliary circuit and a second indicator lamp circuit to indicate a lock-out condition in each auxiliary circuit, as well as test points in the line relay circuit and an optional pay-tone switch circuit.