Abstract: An electronics enclosure is provided. The enclosure includes a cylindrical body, one or more modular card cages adapted to receive one or more electronic circuit cards. The one or more modular card cages including an outer frame member in direct physical and thermal contact with an inner wall of the cylindrical body, an inner frame member, one or more support members coupled between the outer frame member and the inner frame member, and a plurality of electronic device retainers adapted to couple to the modular card cage and hold each of the one or more electronic circuit cards in direct physical and thermal contact with one of the one or more support members. The support members provide an isolated heat dissipation path for heat, produced by each of the one or more electronic circuit cards, to be removed from the enclosure.

Abstract: A rotating radius limiter for an optical fiber cable management panel is provided. The radius limiter includes a radius limiter structure and a bracket that permit relative motion between the structure and the bracket. The structure and bracket are mounted to a sliding cable management panel. The radius limiter structure includes a curved wall, an opening for receiving cables and a trough section for retaining cables about a radius portion.

Abstract: A communication system. The communication system communicates to a number of subscribers. The communication system includes a number of communication circuits which are disposed to divide a region into communication areas. Each communication circuit communicates using a first polarization in a first portion of its communication area and communicates using a second, different polarization in a second portion of its communication area. Additionally, adjacent portions of the communication areas of the communication circuits use the same polarization.

Abstract: A housing for circuit cards is provided. The housing has a shell. A thermally conductive liner integral with the shell lines an interior of the shell. A protrusion of the liner extends through the shell and contacts the shell to form a pressure seal between the liner and the shell. A heat sink is disposed on an exterior surface of the shell and is thermally coupled to the protrusion of the liner. A case is disposed within the liner and is thermally coupled to the liner. The case is adapted to receive a plurality of circuit cards so that the plurality of circuit cards is thermally coupled to the case.

Abstract: The present disclosure relates to a device for holding a plurality of fiber optic connectors. The device includes a clamp defining a plurality of ferrule receiving openings, a set plane with openings for the fibers, an alignment surface on which the ferrules rest, and an actuator for moving moveable portions of the clamp. The clamp has a plurality of moveable portions that at least partially define the ferrule receiving openings. The moveable portions are moveable between a rest, biased closed position in which the ferrules are clamped within the ferrule receiving openings, and an open position in which ferrules can be inserted in the ferrule receiving openings.

Abstract: Generally, the present invention relates to a fiber optic device that is easier to align than conventional devices, and to a method for aligning such devices. An embodiment of the invention includes a first focusing element having an optical axis and a first focal length, and a first optical fiber optically coupled to a first side of the first focusing element. The first optical fiber is disposed at a first transverse distance from the optical axis so that light from the first optical fiber propagates on a second side of the first focusing element as a substantially collimated beam at a first angle to the optical axis. A wedged optical element is optically coupled to the second side of the first focusing element and deviates the substantially collimated beam so as to propagate in a direction substantially parallel to the optical axis.

Abstract: In an apparatus and method for locking the wavelength of a laser, a fringe-producing optical element is disposed directly in the in the output beam from the laser. The fringe-producing optical element produces a fringe pattern in a second light beam derived from the output beam. The fringe pattern is detected by a detector unit. Signals generated by the detector unit are used to generate a laser tuning control signal that tunes the laser to a desired operating wavelength.

Abstract: A system and method for protection of virtual connections at the data link layer. The method provides for protection switching in a ring network. The method comprises detecting an error in one of a first and second routes (“the errored route”). Error cells are generated for each virtual connection affected by the detected error. Error cells are transmitted downstream on the errored route. First switch fabric receives the error cells at a downstream network element associated with the errored route. Change in state of the errored route is communicated to a second switch fabric of the downstream network element associated with the other of the first and second routes (the “other route”). When the state of the errored route is worse than the state of the other route, automatically configuring the second switch fabric to establish the other route to be a working route for the virtual connection.

Abstract: A multimedia patching box including a generally rectangular housing. The housing includes a first wall positioned opposite from a second wall. The housing also includes opposing third and fourth walls that extend between the first and second walls. A panel is mounted adjacent the front of the housing. The panel is mounted to pivot about a pivot axis between an open position and a closed position. The pivot axis is located adjacent to the third wall of the housing and extends generally along the third wall of the housing. A plurality of multimedia connectors are mounted on the panel. The housing defines at least one cable access opening defined through at least one of the first and second walls at a location adjacent the third wall. A cable management structure is connected to the back side of the panel. The cable management structure defines a cable guiding channel that extends generally along the pivot axis of the panel and generally aligns with the at least one cable access opening.

Abstract: An electrical connector including a circuit board, a contact spring insert, and an insulation displacement terminal insert wherein the contact spring insert is positioned between the insulation displacement terminal insert and the circuit board. The insert assembly can be mounted to a jack housing to form a telecommunications jack for receiving telecommunications plugs.

Abstract: A media wall converter that fits into an existing faceplate of a wall outlet. The converter has a front section for housing converter circuitry and a rear section for housing optical components. The rear section of the adapter housing resides behind the faceplate while the front section of the housing extends into a work area from the faceplate.

Abstract: A cable breakout assembly comprising: a cable furcation device joining a cable including an outerjacket and an inner optical fiber, to an upjacket. The upjacket includes an inner tube for receiving the optical fiber, a stranded strength member outside the inner tube, and an outer tube outside of the strength member. The cable furcation device includes a first end disposed around the end of the outer jacket of the cable. The second end has a projecting tube for receiving the outer tube of the upjacket, the first tube having an inner diameter receiving the inner tube and the optical fiber. The deice has an outer crimp surface, and a crimp ring crimps the strength member to the crimp surface. A heat shrunk tube is positioned around a portion of the upjacket, the cable furcation device, and a portion of the cable.

Abstract: Cascade low-pass filters are useful in attenuating the xDSL band in a POTS splitter. The design of the low-pass filter is a sixth-order filter having two stages. A first stage includes a fourth-order filter, preferably with a stop-band frequency of approximately 48 kHz. A second stage includes a second-order filter in cascade with the fourth-order filter. For this filter, the stop-band frequency is preferably approximately 29 kHz. The inductance value of the second stage is relatively small in comparison to the inductance values of the first stage. In this manner, improvements in xDSL band attenuation are facilitated with little or no eroding of the voice band performance such as insertion loss, pass-band attenuation and return loss.

Abstract: The present disclosure relates to a jack assembly including a jack mount having a front side and a rear side. A jack of the assembly is adapted to be slidably mounted in a jack receiving region of the jack mount. The jack assembly also includes a plurality of cross-connect contacts, and a rear interface assembly. The rear interface assembly includes a dielectric cover piece and a plurality of rear connectors that project outward from the dielectric cover piece.

Abstract: An electrical terminal is adapted for insertion into a through hole of a circuit board and includes a first section that receives an electrical contact. The first section includes first and second spring arms proximate to each other at a contact point and configured to exert a first spring force to retain the electrical contact. The electrical terminal also includes a second section adapted for insertion into the through hole of the circuit board. The second section includes first and second pin members proximate to each other and defining first and second slots configured to exert a second spring force to retain the electrical terminal in the through hole of the circuit board. The second spring force is exerted in a direction perpendicular to the first spring force.

Abstract: Embodiments of a communication panel are disclosed that include structures that facilitate maintaining and assembling the communication panel, protect the keypad buttons, and/or protect the integrated circuits of the communication panel. Embodiments include structures such as perpendicular circuit board configurations, multi-sided removable cover surfaces, and multi-layered front panels with keypad holes. Elastomeric keypads may be included and buttons of the keypad protrude through holes in the multi-layered front panels.

Abstract: The present invention relates to a module for terminating and connecting optical fiber telecommunications cables including connection locations located on a bulkhead pivotably mounted to an open front of a housing. The bulkhead also includes a cable management structure which moves with the bulkhead as the bulkhead pivots. The module may be mounted to a telecommunications equipment rack directly mounting locations on vertical supports of the rack Alternatively, the module may be mounted to a telecommunications equipment rack in concert with a cable slack storage structure which also fits between the vertical supports of the rack and which provides a mounting location for mounting the module. A plurality of modules may be mounted to the telecommunications equipment rack and cable guides mounted to the side of each module cooperate to define a vertical cable channel for directing telecommunications cables to a and from each of the modules mounted to the rack.

Abstract: A coaxial connection assembly including a coaxial jack with a conductive outer shell with a first end and a second opposite end. The first end defines a front coaxial jack including an insulator mounted within an axial opening of the outer shell and a center conductor mounted within the insulator. The second end defines a rear coaxial jack including an insulator mounted within an axial opening of the outer shell and a center conductor mounted within the insulator. The center conductors of the front and rear jacks are electrically connected. The jack assembly is positioned within a longitudinal opening of a housing. The first end of the jack assembly extends through a first end of the housing and the second end of the jack assembly extends through a second end of the housing. The jack assembly may only be inserted within and removed from the housing through the first end. Rotation of the jack assembly within the opening is prevented.

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: A telecommunications network is provided. The network includes at least one service delivery unit having a data port and a network interface port and a memory that stores data for managing the telecommunications network. The network interface port is coupled to a switch fabric. The data port is coupleable to at least one local area network. A network management station is communicatively coupled to the service delivery unit. The at least one service delivery unit is configurable to allow the network management station to view selected portions of the data in the memory of the at least one service delivery unit to facilitate management of selected aspects of the service delivery unit.