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: A network device object model and method is detailed that manages configuration and tasking of attached hardware with efficient mapping of internal network device object instances to SNMP or RMON protocol MIBs of the network device. The network device object model and method utilizes an object oriented design and MIB implementation that allows the network device to get, and set SNMP and RMON configuration information to MIBs of the object oriented network device in an efficient manner.

Abstract: A housing having a shell, a first compartment, and a second compartment within the first compartment is provided. A first cover is pivotally attached to the shell for selectively opening and closing the first compartment. The first cover has a resilient latch biased for grasping the shell and a lead-out for wires. A second cover is pivotally attached to the shell for selectively opening and closing the second compartment. A plurality of pivot connectors is located in the first compartment. Each of the plurality of pivot connectors is oriented to receive a wire in a direction parallel to a plane of the lead-out for wires. A plurality of jacks is also located in the first compartment. Each of the plurality of jacks has at least one resilient conductor. Each of the plurality of jacks is oriented so that the resilient conductor lies in a plane perpendicular to the plane of the lead-out for wires.

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: 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 wavelength division multiplexed device is based on a transmission grating spectrometer having at least two diffractive optical elements. The WDM device provides flexible use and may be widely applied in WDM systems. The device is useful for multiplexing and demultiplexing, channel monitoring, for adding and dropping channels, and for controlling the power in individual channels within a multiple channel signal. The device provides for dynamic control of individual channels, and may be advantageous in use as a gain flattening filter.

Abstract: An improved configuration server apparatus and method is detailed that manages configuration and tasking of devices, elements, or links of networks or networks rack systems. The improved configuration server apparatus and method allows for dynamic updates of configuration components, that are utilized by the configuration server to generate configuration responses, by identifying stale configuration components and managing their dynamic updating in response to configuration change events that affect the underlying input files and information databases.

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 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: 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 method for internet groups management protocol proxying having a backup proxy configured as a secondary interface backing up a primary interface uses metrics and monitoring to switch interfaces upon failure of the primary interface.

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: 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: 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 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 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.