Abstract: A apparatus for providing a Fast Fourier Transform (FFT) and an inverse FFT is provided. The apparatus comprises a radix-N core. The radix-N core includes at least N multipliers. The radix-N core also includes a twiddle-factor lookup table that stores complex twiddle-factors. The twiddle-factor lookup table is coupled to one input of each of the multipliers. The radix-N core also includes a conversion random access memory (RAM) that stores transform points. The conversion RAM is coupled to another input of each of the multipliers. The radix-N core also includes an array of at least N-times-N adder-subtracter-accumulators.

Abstract: A multicarrier transmitting modem is described.

Abstract: A method of computer data transmission over a telecommunications network having a head end connected to a plurality of service units is provided. The method includes receiving a request for transmitting computer data over the network from a service unit, retrieving provisioning information for the service unit, and selectively assigning one or more data channels based on the provisioning information to transmit the computer data over the network to provide a data path with substantially constant data transfer bandwidth between a head end and the service unit.

Abstract: A modular jack assembly for connecting and switching computer network cables. The jack assembly includes at least one jack module with two sets of connectors for linking wires from cables to the module and at least one jack. The modules within jack assembly slide between a first position and a second position. In the first position, the two sets of connectors linked to cables are electrically connected to each other, allowing normal through signal transmission. In the second position, the electrical connection between the connector sets is broken and the plug contacts within each jack are linked to one of the sets of connectors, allowing pass-through connections, such as a cross-connection, to be made.

Abstract: A method of computer data transmission over a telecommunications network having a head end connected to a plurality of service units is provided. The method includes receiving a request for transmitting computer data over the network from a service unit, retrieving provisioning information for the service unit, and selectively assigning one or more data channels based on the provisioning information to transmit the computer data over the network to provide a data path with substantially constant data transfer bandwidth between a head end and the service unit.

Abstract: The present invention includes an add-on trough for use with existing telecommunications equipment racks having cable management troughs. The add-on troughs engage the outer edge of the existing troughs and permit higher densities of telecommunications circuits to be incorporated with these racks. Several alternative embodiments are adapted for mounting on either upper or lower troughs, or on lower troughs only. The troughs may incorporate a reinforcement structure as required to support the weight of cables placed within the trough without sagging. A variety of openings for telecommunications cable passage into and out of the troughs are provided. A power cable route is incorporated into the design of certain embodiments.

Abstract: A tunable connector and method for assembling a tunable connector. The connector includes a ferrule that is retainably engaged within a hub. The connector further includes a rear housing and a front housing. The rear housing is sized to receive and rotationally retain the hub. The front housing has a bore that receives and engages the exterior surface of the rear housing. The front and rear housing include engagement members that allow the rear housing to be retained within the front housing and rotated relative to the front housing between discrete positions.

Abstract: A multi-stage signal router includes a clocked storage element connected to each output of each stage of the router. Each clocked storage element is responsive to a trigger event of a clock signal to capture a signal level present at the output to which it is connected and hold the signal level at its own output until a subsequent trigger event of the clock signal.

Abstract: A coaxial connector assembly for mounting in an aperture in a stiff plate includes a barrel having a shoulder at its rear end for engaging an interior surface of the mounting plate and an external screw thread intermediate the front and rear ends of the barrel. A nut is fitted on the barrel from the forward end thereof and has an end face with a key formation for engagement by a driving tool.

Abstract: A forward-reverse crosstalk compensation method is provided for compensating capacitance/inductance on a printed circuit board of a connector. The method includes a forward compensation process and a reverse compensation process. The forward compensation process compensates the unbalanced capacitance in the plug of the connector by using the parallel conductive lines or wires. The reverse compensation process can be used to compensate the unbalance capacitance/inductance caused by the forward compensations in the same pair combination of the connector. In both forward compensation and reverse compensation processes, electro-magnetic fields, such as capacitors, can be formed to balance the capacitance/inductance on the printed circuit board of the connector.

Abstract: Embodiments of the present invention provide a hybrid fiber-coax network having a head end and at least one fiber node in two-way communication therewith. A cable modem is located within the fiber node that provides a communication channel. The communication channel is adapted to transmit at least one informational signal that is indicative of a condition of the fiber node to the head end and is adapted to receive at least one control signal from the head end.

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: The present invention provides for a 1×N optical switch having a switching component, an input, and a plurality of outputs formed in a single substrate. The switching component includes a pair of mirrors which are operated such that by changing the position of at least one of the mirrors, the output of the switch changes.

Abstract: A testing apparatus that comprises an electrical device. A first circuit is in electrical communication with the electrical device. The first circuit including an amplifier. First and second couplers are electrically connected to the first circuit and arranged in series with the amplifier. The amplifier is positioned between the first and second couplers. A second circuit has a first end in electrical communication with the first coupler and a second end in electrical communication with the second coupler. The total gain of the first coupler, the second coupler, the portion of the first circuit between the first and second couplers, and the second circuit is approximately zero.

Abstract: A telecommunications apparatus for use with a signal lamp. The apparatus includes a jack having a jack body defining an IN port, an OUT port and a MONITOR port. The ports are aligned along a vertical line with the OUT port positioned above the IN port and the MONITOR port positioned above the OUT port. A first set of spring contacts is provided for contacting a plug inserted in the IN port, a second set of spring contacts is provided for contacting a plug inserted in the OUT port, and a third set of spring contacts is provided for contacting a plug inserted in the MONITOR port. The telecommunications apparatus further includes a lamp switch for activating the signal lamp when a plug is inserted in the MONITOR port. The lamp switch is positioned below the third set of spring contacts and above the second set of spring contacts.

Abstract: A fiber optic telecommunications frame is provided including rotatable 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, and rear cable guides disposed within the frame. The frame further includes left and right vertical cable guides for patch cables. The frame further includes cable storage spools for the patch cables positioned adjacent to the left and right panels of the frame. 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.

Abstract: A designation window including a transparent strip member having a front side and a back side. The strip member also includes a length and a width. Finger grips are provided on the front side of the strip member. The fingers grips include outwardly facing gripping surfaces that extend across the width of the strip and have concave curvatures.

Abstract: A hinge clip apparatus for selectively engaging/disengaging a cover includes a base, a hinge defining a hinge axis, and a plate. The plate is pivotally moveable relative to the base along the hinge which connects the base to the plate. The plate includes a hole and a spring member extending through the hole. The spring member has an extension tab capable of engaging the cover and disengaging from the cover when the spring member is compressed.

Abstract: The present disclosure relates to a fiber optic device including a connector housing including a front housing piece, an intermediate housing piece, and a rear housing piece that is non-unitarily connected to the intermediate housing piece. The rear housing piece and the intermediate housing piece define passages that are in general alignment with one another. The fiber optic device also includes a hub positioned within the connector housing. The hub includes a passage that aligns generally with the passage of the intermediate housing piece. The hub is spring biased toward a front end of the connector housing. The fiber optic device further includes a ferrule connected to the hub, and a fiber optic cable. The ferrule defines a passage that extends in general axial alignment with the passage of the hub. A fiber portion of the fiber optic cable is adhesively bonded within the passage of the ferrule. A buffered portion of the fiber optic cable extends through the passage of the rear housing piece.

Abstract: A system and method for electronically identifying connections established through a cross-connect system provides for the identification of all hard-wired and temporary patch connections, and any modifications made to existing cross-connect circuit connections. Connection identification and status information is acquired in near real-time and stored in a database which is accessible by a user through a graphical user interface (GUI). The TRACE or lamp wires which connect respective pairs of cross-connect circuits are utilized in an unconventional manner so as to form a scanning bus. The information signal paths established through the cross-connect circuits remain undisturbed. A scanning signal is communicated between each pair of cross-connected circuits over the TRACE conductor. In the event a patch cord is used to temporarily redirect a signal connection, the scanning signal is transmitted over the shield or sleeve conductor of the patch cord.