Abstract: A ring network is provided. The ring network includes a number of network elements, each including first and second switch fabrics. At least two uni-directional busses are coupled between the first and second switch fabrics. A number of ring segments are coupled between adjacent network elements to form first and second routes for transporting cells using virtual connections wherein, for each virtual connection, one route is the working route and the other route is the protection route. The first and second switch fabrics of each network element are associated with one of the first and second routes.

Abstract: A method for confining circuit cards to different locations within a housing is provided. The housing includes a frame having an array of slots, each containing one of the circuit cards. In one embodiment, the receptacle has a cam that is selectively engageable with the frame for clamping the circuit cards within the frame. In another embodiment, a shaft is rotatably attached to the receptacle. The shaft has a head at one end and a nut opposite the head. A resilient element is disposed on the shaft between the head and the nut. The resilient element is axially compressible between the head and nut to bulge generally perpendicularly to the axial direction into engagement with the frame for clamping the circuit cards within the frame.

Abstract: A telecommunications patch panel is provided having a plurality of connector modules rotatably mounted to a frame member. Each connector module has a front face and an opposite facing rear face, and each front face includes a plurality of connector jacks. Each rear face includes a plurality of wire termination blocks. The wire termination blocks are electrically connected to the connector jacks. Each connector module is rotatable about a rotation axis relative to the frame member. A lock selectively locks each connector module to the frame member as desired. The connector jacks and the connector modules are arranged in linear arrays perpendicular to the axis of rotation.

Abstract: A power distribution panel having circuit elements such as KTK and GMT fuses removably mounted to a unit housing by means of module members, thereby allowing for ease of customization of the circuit elements of the power distribution panel.

Abstract: A cross-connect module is disclosed herein. The cross-connect module includes a housing having a front end and a rear end. The rear end includes a rear wall defining connector mounting openings. First and second switching jacks are positioned adjacent the front end of the housing. Rear connectors mount within the connector mounting openings. Cables electrically couple the rear connectors to the switching jacks. A tracer lamp circuit including a power connector and a pin jack are also provided. In depicted embodiments, the rear connectors, the pin jack and the power connector are secured to the rear wall of the housing by snap-fit connections. The depicted module also includes a front cover having structure for providing snap-fit connections with the switching devices.

Abstract: An adapter having a housing, a ground clip and an adapter subassembly all located in the housing. The adapter subassembly includes a proximal portion that can be coupled to a coaxial connector and a distal portion that can be coupled to a printed circuit board. A central conductor in the form of an elongated shaft that runs through the subassembly and has a ball contact end for contacting a conductor located on a printed circuit board and the elongated shaft is tapered in a region near the bal contact.

Abstract: An optical fiber cable management panel includes at least one slideable drawer and structure within the drawer for cable management and/or connection to other devices. At least two tray inserts drop into the drawers to provide the appropriate management and connection devices. Each of the drop-in plates includes fastener structure to accommodate removable securement of the drop-in plates to the drawer. The drop-in plates accommodate selected fiber management components thereon. The fiber management components can include radius limiters, adapters, or LEDs. A method of providing fiber management components in a cable management panel includes operably mounting at least two drop-in trays in a drawer, each of the drop-in trays including a fiber management component.

Abstract: An optical fiber cable assembly comprising an optical fiber slidably enclosed within a hollow tubing, both the fiber and the tubing having corresponding first and second ends. The cable is terminated with the first and second ends of the tubing and the fiber constrained with respect to each other such that fiber and the tubing are approximately the same length when the cable is at a first temperature. The tubing is made of a material which contracts more than the optical fiber when the cable is exposed to temperatures below the first temperature, such that the fiber is longer than the tubing and excess fiber length is formed. An intermediate portion of the tubing permits the excess fiber length to accumulate without bending in a radius smaller than a minimum bend radius.

Abstract: A DSX system arranged to receive a plurality of high-density chassis is disclosed. The chassis include back planes having rear access IN/OUT fields and rear access cross-connect fields. The rear access IN/OUT fields are electrically connected to termination structures and panels located in respective IN/OUT regions and cross-connect regions. The termination structures of the IN/OUT region includes first and second fanning strips located along edges of termination panels. A double-hinged cover provides access to the termination panels.

Abstract: A cable trough cover assembly and method of assembly including a cover plate and a hinge piece. The cover plate includes a pivot member along at least one edge, and the hinge piece defines a pocket for releasably receiving the pivot member. The pocket and pivot member arrangement allow the cover plate to be rotated relative to a cable trough to which the hinge pieces may be mounted.

Abstract: An input power sharing control circuit is provided. The control circuit includes a plurality of current limiting circuits each circuit adapted to receive power from one of a plurality of independent power sources, a power switching control circuit adapted to receive power from the plurality of independent power sources and provide a variable power output and a load coupled to the output of the power switching control circuit, wherein the value of the load impedance and the value of the voltage of the output power controls the variable power output.

Abstract: The present invention relates to a center conductor insulator with a tapered entry for use with a coaxial cable transmission line connector that provides guiding and centering of a center conductor pin within the connector. The present invention further relates to a front sleeve assembly for use with a coaxial cable transmission line connector which incorporates a center conductor insulator with a tapered entry to guide and center a center conductor pin within the connector. The present invention also relates to a compression ring assembly for mounting a connector to a cable, the assembly having a collet engaging a tapered rear seal to compress the collet about the cable. The present invention further relates to a method of mounting a connector to a cable with a compression ring assembly incorporating a collet and tapered rear seal.

Abstract: The present invention relates to cables made of twisted conductor pairs. More specifically, the present invention relates to twisted pair communication cables for high-speed data communications applications. A twisted pair including at least two conductors extends along a generally longitudinal axis, with an insulation surrounding each of the conductors. The conductors are twisted generally longitudinally along the axis. A cable includes at least two twisted pairs and a filler. At least two of the cables are positioned along generally parallel axes for at least a predefined distance. The cables are configured to efficiently and accurately propagate high-speed data signals by, among other functions, limiting at least a subset of the following: impedance deviations, signal attenuation, and alien crosstalk along the predefined distance.

Abstract: The present invention relates to a power distribution unit with output power terminals and electrical leads with mating portions connected to extensions of the terminals, with adjacent mating portions and connected extensions offset from one another. Alternatively, an electrical power unit may have one or more power output terminals connected to a corresponding number of power distribution circuits by leads, each lead having a portion parallel to and offset from other adjacent leads in a first direction and another portion parallel to and offset from each adjacent lead in a second direction. The present invention further relates to an output power assembly with inner and outer faces, a first set of terminals on the outer face which are electrically connected to a common conductor along the inner face and a second set of terminals each having individual connectors along the inner face, the individual connectors being offset from each adjacent connector.

Abstract: Method and systems for clamping at least one circuit card within a case are provided. The method includes compressing axially at least one resilient element between a head of a shaft and a nut disposed on the shaft so that the at least one resilient element bulges generally perpendicularly to the axial direction and into engagement with the at least one circuit card, exerting a force on the at least one circuit card using the at least one resilient element and maintaining the force on the at least one circuit card using the at least one resilient element.

Abstract: The present invention relates to an improved isolated core or insulated conductor with a low dielectric constant and reduced materials costs. Apparatuses and methods of manufacturing the improved isolated core or insulated conductor are also disclosed.

Abstract: A telecommunications apparatus for use with a plug having at least first, second and third pins. The telecommunications apparatus includes a plug connector for receiving the plug. The plug connector includes at least first, second and third electrical contacts for electrically contacting the first, second and third pins, respectively, when the plug is inserted in the plug connector.

Abstract: Fiberoptic connector and adapter assembly includes a fiberoptic connector received within an adapter. The connector has a cover on the connector housing. The cover pivots between open and closed positions to expose or cover, respectively, a optical fiber contained within the connector. Longitudinal guides of the connector are received cooperating with longitudinal guides of the adapter to direct the connector into the adapter in a prescribed alignment. A cam pin is carried on the adapter to engage a cam pin receiving slot or the cover to urge the cover to the open position as the connector is inserted into the adapter.

Abstract: The present invention relates to an improved cable comprising a twisted wire pair. Each wire in the twisted wire pair includes a conductor and a polymeric insulator surrounding the conductor. The insulator defines a plurality of channels that run along the length of the conductor. The conductor has an exterior surface that is exposed to gas within the channels. Apparatuses and methods of manufacturing the improved cable are also disclosed.

Abstract: A cable exit trough is mountable to a lateral trough section either during initial assembly of the cable routing system, or at a later date. The exit trough includes a bracket portion mountable to the top edge of one of the sides of the lateral trough section. Two lead-ins are provided to lead the cable in an upward direction from the lateral trough section to the exit trough. The exit trough includes an exit trough portion extending from the bracket portion upwardly away from the lateral trough section. The exit trough portion includes a convexly curved bottom trough surface, and two convexly curved upstanding sides. The exit trough portion and the lead-ins define a cable pathway from the lateral trough section to an exit point of the exit trough portion which can either lead downwardly relative to the lateral trough section, or horizontally.