Abstract: A scheme for compensating for both near-end (NEXT) and far-end (FEXT) crosstalk within a communication connector having first and second pairs of contact wires. A first stage of compensation includes capacitive coupling that corresponds in magnitude to a sum of offending capacitive and offending inductive crosstalk both of which originate from a mating connector. At a second stage of compensation, both (a) inductive coupling corresponding in magnitude to the offending inductive crosstalk, and (b) capacitive coupling corresponding in magnitude and of opposite polarity to the inductive coupling, are produced. In the disclosed embodiment, the first and the second compensation stages are implemented in an industry type RJ-45 communication jack to meet or surpass Category 6 NEXT/FEXT loss levels.

Abstract: A communication jack has a first pair and a second pair of contact wires defining corresponding signal paths in the jack. Parallel, co-planar free end portions of the wires are formed to connect electrically with a mating connector that introduces offending crosstalk to the signal paths. First free end portions of the first pair of contact wires are supported adjacent one another, and second free portions of the second pair are supported adjacent corresponding ones of the first free end portions. Intermediate sections of the first pair of contact wires diverge vertically and traverse one another to align adjacent to corresponding intermediate sections of the second pair of wires, to produce sufficient inductive compensation coupling to counter the offending crosstalk from the plug. Capacitive compensation coupling may be obtained for the contact wires via one or more printed wiring boards supported on or in the jack housing.

Abstract: A communication connector assembly has a terminal housing, and a number of electrically conductive connector assembly terminals supported by the housing. The connector assembly terminals have first terminal portions extending from the housing for contacting terminals of a mating connector, and second terminal portions for making electrical connections with outside circuits. An electrical circuit component is disposed adjacent the terminal housing. The component is connected to a contact portion on at least one of the assembly terminals, intermediate a free end of the first terminal portion and the second terminal portion of the assembly terminal. The mating connector is thus connected to the electrical circuit component through the first terminal portions of the assembly terminals, in proximity to the circuit component. The electrical circuit component may be constructed and arranged to compensate for cross talk induced when the mating connector contacts the first terminal portions of the assembly terminals.

Abstract: A communication plug that generates crosstalk that complements the compensating crosstalk in a legacy jack or connector. The communication plug includes a dielectric carrier on which a plurality of electrical conductors are disposed. Each conductor is configured to wrap around a first end of the carrier thereby forming a series of adjacent inductive loops. Complementary crosstalk is generated between the conductors as a result of the fields created from current flow through the inductive loops and can be fixed to a desired level by modifying certain engineerable parameters. The inductive loops are positioned in the nose or front region of the plug where the conductors engage the jack spring wires or terminals thus minimizing the propagation delay between the crosstalk signals generated in the plug and the crosstalk signals generated in the jack or connector.

Abstract: A tunable blade structure for use in a communication plug terminating a cable carrying a plurality of conductors. One end of the blades is designed as an insulation displacement connector (IDC) for electrical communication with the conductors from the cable. The other end of the blades is designed as a jack contact region for electrical communication with jack springs. Between these two ends are three regions for manipulating the electrical characteristics of the blades: a capacitive coupling region, an inductive coupling region and an isolation region. By appropriately designing these three regions, electrical interference (i.e., crosstalk) between the conductors can be optimized.

Abstract: A fault locating apparatus for locating high resistance leaks in telephone subscriber lines comprising circuitry for initially applying a low voltage to the line to ensure that the insulation and conductors are dry at the fault zone. When the drying is completed as indicated by a zero reading on an ammeter connected in the circuit, further circuitry is actuated to apply a brief high voltage to the line to cause a brief arc discharge at the fault. At this point, two operative options are made possible. The peak current flow during the arc may be read on a second ammeter providing a measure of the distance to the fault and the apparatus is disconnected or the low voltage application may be continued to sustain the arc until a weld is created at the fault between the line conductors. A feature of the apparatus is a timing circuit which controls means for applying a reverse potential to the line thereby extinguishing the arc at the fault while simultaneously inducing a weld between the conductors there.