Abstract: A jack and chassis assembly includes a baluns interface connected directly to the in/out wire wrap pins on the jacks. This helps to convert 75 ohm coaxial signals to 120 ohm twisted pair interface signals for equipment connections. The jack and chassis assembly includes at least one jack, a chassis defining a first frame holding the jack, a circuit board mounted to the first frame and in electrical contact with the jack, and a balun in electrical contact with the jack. Methods for assembling a jack and chassis assembly include mounting a jack onto a frame, providing a second frame holding a balun, and connecting the jack to the balun. A chassis assembly includes a first frame, and a second frame, with the first frame being mounted within the second frame.

Abstract: An electrical connector including a spring mounting body having a clip receiving structure. A plurality of contact springs are mounted on the spring mounting body. A clip is inserted within the clip receiving structure to stabilize the contact springs. Portions of the contact springs are captured between the clip and the spring mounting body. A method for assembling the electrical connector is also disclosed.

Abstract: Embodiments of the present invention provide tools for installing and extracting fuses. In one embodiment, the tool has an elongate handle. A guideway spans the length of the handle, and a pair of jaws, adapted to retain the fuse, protrudes from an end of the handle. A rod is disposed within the guideway and is selectively actuatable within the guideway for releasing the fuse from the jaws.

Abstract: A fiber optic telecommunications frame is provided including panels having front and rear termination locations, the panels positioned on left and right sides of the frame. The frame includes vertical access for the rear cables. The frame further includes left and right vertical cable guides for the front patch cables. The frame further includes cable storage spools for the patch cables. The frame includes a horizontal passage linking the left and right panels and the cable guides. A lower portion of the frame defines splice tray holders and a central passage from the splice tray holders to the rear sides of the left and right panels. From a front of each panel, access to a rear of the panel is provided by the hinged panels. Alternatively, the panels can form connector modules with front termination locations and rear connection locations for connecting to the rear cables. The modules can house couplers, such as splitters, combiners, and wave division multiplexers.

Abstract: An improved optical frequency stabilization unit utilizes the frequency-dependent phase retardation of a birefringent element as a frequency reference. A light frequency stabilization unit includes a birefringent element having a longitudinal axis, the optic axis of the birefringent element is oriented to retard the phase of polarized light propagating through the element parallel to the longitudinal axis. The phase is retarded by an amount that is proportional to the frequency of the polarized light. A polarizer transmits a portion of the phase-retarded light. The magnitude of the transmitted portion is determined by the phase retardation amount. A first optical detector is disposed to detect the transmitted portion of light and to generate a first signal in response to the transmitted portion detected.

Abstract: A telecommunications coaxial connector comprises a body with a first open end, an opposite second open end and an axial opening defined through the body, a cap positioned about the first open end. The cap is electrically connected with the body and includes a side wall, an open end aligned with the axial opening and a continuous ring about the open end of the cap and an integral spring member defined in the side wall. A center conductor is positioned within the axial opening such that the center conductor extends into the cap and an insulator electrically isolating the center conductor from the body. The present invention also relates to a telecommunications chassis including an enclosure with open ends and a bulkhead with coaxial telecommunications connectors, the bulkhead positioned across an open end with the coaxial telecommunications connectors within the enclosure.

Abstract: Avariable equalizer is described. The variable equalizer provides for independent control of a number of breakpoints in the frequency response of the equalizer so as to allow the equalizer to be readily tuned to compensate for the tilt of coaxial cables over a wide range of characteristic attenuation. In one embodiment, the variable equalizer includes a two port bridge “T” network with variable top and bottom branches that are independently and selectively adjusted to create a desired frequency response. For example, in one embodiment, the top branches include a number of variable RC networks and the bottom branches include a number of variable LR networks. In some embodiments, PEN diodes provide the variable resistance in these LR and RC networks.

Abstract: A fiber optic switch package and method of assembling the same with improved protection of the fibers and simple assembly. The package redirects or bends optical fibers of a 2×2 or 1×2 MEMS optical switch in the package so that instead of exiting the package from four ends, the fibers exit the package from two ends. By exiting the package from two ends, real estate on a printed circuit board is conserved and packages can be located closer to other packages on a printed circuit board.

Abstract: Subnet pooling by host group type and internet service provider allows filtering of subnet pool and efficient assignment of an incoming host request to an appropriate subnet within a group and ISP of the host request types.

Abstract: A method of dynamic host configuration is provided. The method includes receiving a provisioning request from a media terminal adapter including an identifier, selecting a service provider designated Internet Protocol address for providing telephony service through the media terminal adapter, and generating a unique fully qualified domain name for the media terminal adapter based on the identifier. The method further includes transmitting the unique fully qualified domain name and Internet Protocol address to the media terminal adapter, receiving a provisioning acceptance notice from the media terminal adapter, and providing configuration information to the media terminal adapter including the selected fully qualified domain name and the selected internet protocol address. In another method, a domain name server stores the Internet Protocol address and fully qualified domain name in order to support look-ups based on either the Internet Protocol address or the fully qualified domain name.

Abstract: A distributed provisioning system has a central directory server and a number of distributed provisioning servers. The provisioning servers connect to the central directory server for provisioning information, and for provisioning information for user access devices that need provisioning. The central directory server stores the provisioning information for the provisioning servers in uniquely accessible restricted access locations of a database, and maintains provisioning information for user access devices in a globally available location of the database.

Abstract: A method and apparatus for provisioning on a per cable modem level includes associating any customer provided equipment behind a gateway cable modem to the same internet service provider as the cable modem.

Abstract: Intelligent round robin assignment of users to subnets within an internet service provider includes determining an assignment criteria for assigning users to the ISP, and assigning users to the subnet that best fits the assignment criteria. Assignment criteria are determined based on any number of factors including available resources and user history.

Abstract: A method and apparatus for providing access to configuration files even if a remote server containing configuration profile information is unavailable includes caching known configuration files locally, and using the known configuration files in the event of a remote server failure or overload.

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: A microelectromechanical (MEMS) device and a method of fabricating a MEMS device are provided. The method of fabricating the MEMS device includes the steps of: etching a die release trench in a primary handle layer of a wafer having the handle layer, an etch-stop layer disposed on the primary handle layer, and a device layer disposed on the etch-stop layer; patterning a release trench in the device layer that is aligned with the release trench in the primary handle layer; temporarily attaching an additional handle layer to the primary handle layer; etching the device layer to define a structure in the device layer; removing the etch-stop layer; and removing the additional handle layer to release the die.

Abstract: The present disclosure relates to a rack for telecommunications equipment. The rack includes a frame defining a bay opening sized and shaped for receiving a plurality of jack modules. The rack also includes a first set of cable management brackets that define a first vertical channel arranged and configured for receiving and vertically managing a plurality of cross-connect cables. Each of the cable management brackets includes a pivot portion that is pivotally movable relative to the frame. The pivot portions are pivotally movable between first positions in which the pivot portions extend partially across a front of the bay opening, and second positions in which the pivot portions are generally offset from the front of the bay opening. The present disclosure also relates to a rack for telecommunications equipment that includes rear cable management structure that defines a plurality of vertical channels along a back side of the rack.

Abstract: A mounting apparatus having first and second blocks securable within a housing. The first block has first and second grooves for respectively receiving a first edge of a first circuit board and a first edge of a second circuit board such that the first and second circuit boards are aligned with each other and are spaced apart. The second block has a groove for receiving a second edge of the first circuit board that is perpendicular to the first edge of the first circuit board and a surface to which the second circuit board is attached adjacent a second edge of the second circuit board that is perpendicular to the first edge of the second circuit board.

Abstract: A method for synchronizing a service clock at a destination node with a service clock at a source node is provided. The method includes receiving data packets from a source node at at least one port of the destination node. At the destination node, the method determines control values for a numerically controlled oscillator for a plurality of time periods. The method selectively uses the control values to set the frequency of a service clock at the destination node for use in receiving data packets.

Abstract: A method for scheduling downstream transmissions in a cable modem termination system is provided. The method includes selecting a queue based on its priority level and a state of the queue. When the selected queue has data, the method schedules transmission of a packet of data for the selected queue. When a packet is scheduled for the selected queue, the method determines whether higher priority queues have data before scheduling additional transmissions.