Abstract: A microelectromechanical relay and a method of fabricating the same that combines electrostatic actuation with electromagnetic actuation. The relay has very low contact resistance when the relay is in its ON state and enhanced contact-to-contact isolation when the relay is in its OFF state. The relay includes a substrate having a trench formed therein, a first pair of contacts located in the trench and an actuator for controllably establishing electrical contact between the first pair of contacts. The actuator includes spaced apart supports on the substrate and a movable beam extending between the supports. A contact cross bar is located on the movable beam facing the first pair of contacts. A first electrode is located on the movable beam and a second electrode is located on the substrate. Electromagnetic force is used to deflect the movable beam towards the substrate and then electrostatic force is used to bring the contact cross bar in physical contact with the first pair of contacts.

Abstract: A monitor circuit for indicating whether a digital cross-connect bay has a cross-connect jack that cross connects equipment being tested that includes a non-intrusive sensor for sensing current changes in a power feed line of the bay being monitored. The non-intrusive sensor is operatively coupled to a sensor device that generates a signal to activate an external sensor if a current change is detected by the sensor. The sensor device is powered from the same power supply as the bay it is monitoring.

Abstract: A module for containing a circuit is provided that attenuates emitted signals without the use of a cover. The module includes a housing and a receptacle. The housing has a front having a certain thickness and the receptacle is accessible from the front of the housing. The receptacle is shaped to receive a circuit component and forms a waveguide.

Abstract: A method for automatic provisioning of ATM traffic is provided. The method includes receiving upstream asynchronous transfer mode (ATM) data from customer premises equipment, detecting the port number at which the upstream ATM data is received, and reading a first virtual path identifier (VPI) number of the upstream ATM data from the header information. The method further includes acquiring a new VPI number for the upstream ATM traffic based on the receiving port number and the first VPI number, attaching the new VPI number to the upstream ATM traffic, and directly mapping the ATM traffic onto one or more TDM transmission lines.

Abstract: A telecommunications cable management system includes a planar base element including a planar top surface and side edges. Side elements are mounted with a mating arrangement to the base element. The side elements may include one or more of the following: upstanding wall portions, side exits extending horizontally, and downspouts. The base elements and the upstanding wall portions may have a continuous cross-section, and can be cut to the desired length for the cable management system. The downspout and side exit elements may also include multiple components wherein a central section of each can be cut to the desired width.

Abstract: A jack includes a body having a plurality of electrically conductive spring contacts and a first and second plurality of connection locations, and a plurality of conductive pins secured to the body and projecting from walls of the body. A circuit board is secured to the body and provides circuit paths to make electrical contact between the spring contacts and the connection locations. The jack is usable in a chassis to form a jack and chassis assembly, wherein the chassis has an open front face and an open back face. The open back face permits accessibility to the projecting pins of the jack, such that it may be wire connected. Secured to the chassis is a circuit board having a plurality of sockets. The sockets provide power and ground connections to each jack. Methods of assembling and providing DSX connections include structures as described herein.

Abstract: A telecommunications termination cabinet includes first and second connector bulkheads, the first bulkhead located in forward position relative to the second bulkhead. The first bulkhead is pivotally mounted to the cabinet. A splice cabinet is positioned below the termination cabinet.

Abstract: A telecommunications electrical connector positions the contacts in a manner to reduce crosstalk problems. An insert assembly positions the spring contacts within a jack for electrical contact with the contacts of a plug. The insert assembly staggers the relative positions of adjacent spring contacts in the y-direction, and staggers the spring contact pivot points in the x-direction, yet maintains a common contact region for all the spring contacts for contacting the contacts of the plug. The distal ends of alternating spring contacts are positioned so as to increase the isolation between adjacent springs. The insert assembly includes selected air passages between spring contacts mounted to the insert assembly to increase isolation and selected dielectric to increase crosstalk cancellation.

Abstract: A tunable fiber optic connector and method for assembling a tunable connector. The connector may include a ferrule mounted to an optical fiber and a hub. A front housing of the connector includes a bore for receiving a rear housing, an anti-rotation seat configured to engage the hub, and a cavity coupled to the anti-rotation seat. A length of an elongated cylindrical rear portion of the hub is sized so that the anti-rotation portion of the hub can be pushed completely into the cavity and rotated to tune the connector when the rear housing is partially inserted into the front housing, and an end of the elongated cylindrical rear portion of the hub abuts the rear housing so that the anti-rotation portion of the hub cannot be completely pushed back into the cavity and rotated when the rear housing is completely engaged with the front housing.

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: A method and apparatus for generating a stable high frequency clock from a low frequency reference signal performs most of its operations in a digital environment. The method and apparatus reduce complexity and cost by reducing the number of digital to analog and analog to digital conversions and eliminating synchronous counters.

Abstract: A method for recovering a reference clock from a composite clock signal is provided. The method includes receiving the composite clock signal. First and second intermediate clock signals are generated from the composite clock signal. The first and second intermediate clock signals are combined to recover the reference clock signal.

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: An apparatus and method for handling traffic on an SDH/SONET access network in which there are one or more central units and associated remote units, the remote units slaved to the frames generated by the central unit.

Abstract: A jack module sized to occupy only a portion of a telecommunications chassis. The jack module includes a front jack mount, a plurality of jacks and a rear connector mount. The rear connector mount supports a plurality of connectors. The connectors include housings defining ports for receiving plugs. In certain embodiments, the connectors can include RJ-45 connectors.

Abstract: A telecommunications device including a chassis having a card housing for containing a plurality of splitter cards. The housing includes front and back ends. The front end defines an access opening for allowing the splitter cards to be inserted into or removed from the card housing. The device also includes a plurality of card edge connectors for providing electrical connections with the splitter cards. The card edge connectors are located within the card housing adjacent to the back end of the housing. The device further includes LINE, POTS and DATA connectors electrically connected to the card edge connectors. Guide members are located adjacent the back end of the housing for directing the splitter cards into the card edge connectors as the splitter cards are inserted into the card housing. The guide members include ramps aligned at oblique angles relative to a direction of insertion of the splitter cards.

Abstract: An apparatus for containing objects, such as electronic circuit cards, and a method for making the same, the apparatus having a housing; at least one case disposed within the housing, the case adapted to confine the objects to different locations within the housing and comprising a frame, the region within the frame divided into two regions by a first partition, each of the two regions divided into a plurality of sections by a plurality of second partitions, each of the second partitions thermally coupled to the frame and the first partition, each of the sections divided into a plurality of slots, each slot having an object disposed therein for thermal contact between the first partition, a second partition, and one of a second partition and the frame; and at least one heat sink adapted to absorb heat from the case, the heat sink thermally coupled to the case and the housing.

Abstract: An optical communications control station includes an equipment rack and a fiber frame for interfacing between the fiber communications link and the equipment in the rack. Raman pump lasers in the equipment rack produce a Raman pump output that bypasses the fiber frame and is coupled directly into the fiber communications link. The number of connectorized components that the pump light passes through is reduced, thus reducing the possibility of damaging fiber connections by passing the high power Raman pump light through fiber connections. The approach also reduces the possibility of an operator being inadvertently exposed to the high power Raman pump light, thus increasing operator safety.

Abstract: A monitoring circuit is provided. The monitoring circuit includes a bus interface that is adapted to be coupled to a bus for monitoring signals on the bus. The monitoring circuit also includes a programmable data capture circuit, coupled to the bus interface, that is adapted to be programmed to selectively capture data from the bus interface based on at least one criteria. The monitoring circuit further includes a memory, coupled to the programmable data capture circuit, that stores data provided by the programmable data capture circuit. A user interface is also coupled to the programmable data capture circuit. The user interface provides access to the programmable data capture circuit for programming the at least one criteria for capturing data. A controller is coupled to the user interface and the programmable data capture circuit to control the programming and operation of the programmable data capture circuit.

Abstract: An optical device has a first collimator sub-assembly having a first free-space end, and a second collimator sub-assembly having a second free-space end opposing the first free-space end of the first collimator. A central housing has first and second ends and is disposed between the first and second collimator sub-assemblies. A first ring on the first collimator sub-assembly is mounted to the first end of the central housing and a second ring on the second collimator sub-assembly is mounted to the second end of the central housing.