Abstract: A thermal microactuator is provided that can be deflected in multiple positions. The actuator has a hot arm and a cold arm coupled together at their distal ends suspended above a reference plane of a substrate. A potential difference is applied across the hot arm so that a current circulates through the hot arm but not the cold arm.

Abstract: A telescoping cable trough section is provided including first and second U-shaped trough sections which are slideably received with each other. One trough section includes slots, and the other includes flanges received in the slots for mating the two trough sections together to form the telescoping cable trough section.

Abstract: In a family of telecommunications modules or other circuit boards, driver software is divided into a core support package for initializing board components common to the family of circuit boards and one or more extended support packages specific to individual members of the family. This facilitates a reduction in the amount of programming effort needed across the family of circuit boards as the core support package need only be developed once for the family of boards rather than developing complete driver programs for each member of the family. The remaining programming effort can then be focused on the specialized subroutines. In addition, changes in hardware common to each member of the family can be accommodated by redeveloping only the core program. This need only occur once for the entire family, rather than once for each member of the family.

Abstract: A telecommunications device including a plurality of splitter cards mounted within a chassis. The device also includes a circuit board and a plurality of card edge connectors for providing electrical connections between the splitter cards and the circuit board. The device further includes POTS connectors electrically connected to the card edge connectors by first tracings of the circuit board, LINE connectors electrically connected to the card edge connectors by second tracings of the circuit board, and DATA connectors electrically connected to the card edge connectors by third tracings of the circuit board. The POTS and LINE connectors are arranged in pairs with the POTS and LINE connectors of each pair being electrically connected to a common one of the card edge connectors. The POTS and LINE connectors of at least some of the pairs are inverted in orientation relative to one another.

Abstract: A retainer for retaining a mating connector in conductive contact with its corresponding mating connector. The retainer includes a base which defines a hole therethrough. A post extends from the base in a direction perpendicular to the base. Disposed on the post is a tapered ledge. The ledge is tapered in a direction away from the base so that the ledge has a first surface at an angle relative to the base. The base may also include a cleat to prevent rotation of the retainer relative to the mating connectors. The cleat is preferably a linear strip extending from and along an edge of the base. The retainer may be used in an assembly including a connector, a mounting bracket and a mating connector.

Abstract: A patch panel including a plurality of electrical connector assemblies, wherein each of the electrical connector assemblies comprises a first jack presented on a first side of a panel frame of the patch panel and a second jack electrically linked to the first jack to form a jack pair and presented on a second side of the panel frame. Both the first jack and the second jack are presented at an angle with respect to the panel frame, and both the first jack and the second jack may be engaged using a patch cord. The first and second jack of each jack pair are at a 90-degree angle relative to one another.

Abstract: A method for polishing an end face of a ferrule is disclosed herein. The ferrule includes an opening in which an optical fiber is positioned. The method includes the step of recessing an end of the optical fiber relative to the end face of the ferrule. The method also includes the step of polishing the end face of the ferrule after the end of the optical fiber has been recessed.

Abstract: A cable management system having as an integral part of the device needing cable management a slot arrangement that receives and holds cables. A lock bar closes the slot arrangement such that the cables are trapped in the slot arrangement. Methods of managing cable include the lock bar and slot arrangement.

Abstract: A fiber optic connector including a ferrule, a hub including a front portion, a housing surrounding the hub and including an inner surface including a bore, the inner surface including a first engagement surface, and a spring positioned within the housing to bias the hub. A press ring includes an outer surface and an inner surface, the outer surface including a second engagement surface configured to engage the first engagement surface of the inner surface of the housing to prevent relative rotation, and the inner surface of the press ring configured to engage the hub so that the hub is maintained in rotational alignment while moving along the longitudinal axis of the connector. A tuning tool is configured to engage and rotate the hub and allow the press ring to slide along an outer diameter of the tuning tool to be delivered to the bore of the connector.

Abstract: An apparatus and method provide for filtering of voiceband and specified tone frequencies of a mixed voice/data signal, such as an Asymmetric Digital Subscriber Line (ADSL) signal. A lowpass filter section passes voiceband content of the mixed signal and suppresses mixed signal content having frequencies falling within a databand of the mixed signal. A bandpass filter section is coupled to or integral with the lowpass filter section and passes the specified tone frequency, such as a metering or billing tone frequency. The lowpass and bandpass filter sections exhibit a combined frequency response that provides for a stopband between the voiceband and the metering tone frequency. The bandpass filter section effectively detunes a frequency response of the lowpass filter section to provide for the stopband.

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: The present invention includes a method for clock recovery in a packet network. The method includes a network which receives data packets at a destination node. Then the data packets are stored in a buffer. The data packets are read out of the buffer by using a locally generated clock. The fill level of the buffer is monitored over a first period of time. A relative maximum fill level for the buffer is identified during the first period of time. Further, the relative maximum fill level is used to control the frequency of the locally generated clock so as to control the rate at which data is read out of the buffer.

Abstract: Multiple digital audio transformer circuits are included in a module for mounting in a chassis. These digital audio transformer circuits are comprised of a front mounted twisted pair digital audio cable connector and a rear mounted coaxial cable connector, with circuitry including baluns electrically linking the front and rear connectors to reduce the impedance of the signal and attenuate the amplitude of the signal voltage. In one embodiment, the module may also include removable attenuation pads accessible through the front face of the module to allow variation of the level of voltage attenuation. The preferred embodiment of the module bi-directional transforms 110 Ohm digital audio signals and 75 Ohm coaxial signals. If transformation of other levels of impedance are desired, modules may also allow for removal and replacement of the baluns. A digital audio transformer system including multi-circuit modules and rack mount equipment chassis is also provided.

Abstract: Couplers for a cable trough system including a terminal end sized to receive a terminal end of a trough member along a longitudinal direction of the body. A spring may be coupled to the body for securing the terminal end of the trough member to the coupler, the spring including first and second spring arms extending generally in opposition to one another in a plane generally parallel to the longitudinal direction. The spring may be received in a slot formed by the trough member. Also included may be a spring release mechanism coupled to the body, the spring release mechanism sliding in the longitudinal direction between a locked position, such that the first and second spring arms engage the terminal end of the trough, and an unlocked position, such that the first and second fingers release the first and second arms of the spring.

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 plate 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: A telecommunications cable management system includes fanning trays and management panels, including slidable drawers, mounted to a rack for management of cables. The fanning tray includes fingers for managing vertical cables. The cables extend horizontally through the fanning tray. The fanning tray includes hinges to access the space or the rack behind the fanning tray. A lock holds the fanning tray in the pivoted up position. One drawer includes slack management devices including a radius limiter that selectively releases to release slack at desired times. A slidable termination panel can be mounted in another drawer to allow greater access to the panel. The fanning trays and drawers are mounted to a rack for managing and connecting the cables.

Abstract: A terminated coaxial connector having a mating end for mating with a coaxial jack, the connector including an axially aligned resistor mounted within a conductive outer shell. The resistor electrically links the outer shell with a center conductor which is connected to a first end of the resistor through a conductive rear plug which is connected to a second end of the resistor. The center conductor and the rear plug hold the resistor axially aligned within the outer shell. Further, a method of assembling a terminated coaxial connector having a mating end for mating with a coaxial jack so that a resistor within the connector is held axially aligned within an outer shell by a rear plug. The resistor is physically and electrically linked to the center conductor and the outer shell through the conductive rear plug and provides a level of impedance within the coaxial connector.

Abstract: A fiber optic circuit provides signal access and monitoring using a set of various switches. The various switches can be remotely controlled using a programmable controller. This controller implements a method for programming and controlling a fiber optic circuit. The fiber optic circuit includes a plurality of signal connection modules, a signal switching network, and a master controller module. The method receiving a circuit configuration command from a remote computing system, retrieving a connection table containing data entries used to specify how the signal connection modules and the signal switching network are to be configured, constructing a module configuration command for each data entry retrieved from the connection table and transmitting the module configuration command to the corresponding module to configure the fiber optic circuit.

Abstract: The present invention relates to bulkhead adapters for optically connecting two strands of optical fibers and including a length of optical fiber within the adapter for attenuating signals passing from one fiber to the other. The attenuation optical fiber is held within an attenuation hub inside the housing of the adapter. Attenuation of optical fiber signals transmitted through the adapter may be provided by the optical fiber, by an offset fusion of two optical fibers, by an airgap between two optical fiber segments, by the inclusion of a filter between two optical fiber segments, or by other structures. When an optical fiber with a connector is inserted into the adapter, the optical fiber is placed in optical contact with the attenuation optical fiber of the attenuation hub. The adapter can be inserted through an opening in a bulkhead so that optical fiber from one side of the bulkhead can be attached to optical fiber on the second side of the bulkhead.

Abstract: A cable guiding fin for managing cable in a cable management system. The fin includes a base and an upstanding wall with a convex surface. The upstanding wall may be tilted at an angle relative to the base and may define a plurality of tie-down apertures. The base may include an adhesive or fastener holes to secure the base to a surface of the cable management system.