Abstract: A circuit is provided for improving the manner in which tone signaling-to-dial pulse converters interface with prior art dial pulse registers. Instead of allowing the converter to operate the register's line supervisory relay, the converter directly operates the dial pulse counting relays of the register. In this way, changes in battery and ground potential and impedance which may be noticeable each time the conversion apparatus pulses the line relay are eliminated, and the line relay in the register is allowed, uninterruptedly, to supply battery and ground to the multifrequency signaling station throughout the duration of signaling. The direct operation of the pulse counting relays permits faster pulsing speeds because neither the distributed capacitance of the line nor the lumped capacitors used in connection with the line relay are in the pulsing path.

Abstract: In a cable restoration system neon devices and light-emitting diodes are utilized to identify corresponding conductors in a broken cable by an arrangement that does not require the assistance of a lineman at the central office. The apparatus identifies a central office line by means of a neon device and ringing bridge arrangement which replaces the neon indicating bulbs used in prior art systems. After identifying a customer line at a cable break by using indicating devices in a conventional manner, a maintenance man at the break location dials the central office over a spare pair. When ringing is applied to the desired central office line, a glow discharge occurs in the neon device, which discharge heats a bi-metallic strip and causes the strip to move and establish a metallic short across the line. The short trips ringing extinguishing the discharge. The bi-metallic strip cools and the short is removed from the line.