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| Number | Title | Issue Date |
| 7969862 | Cycle-based restoration in mesh networks utilizing bandwidth and flow considerations A two step method for determining restoration cycles for a mesh network includes generating a set of possible restoration cycles, and selecting a subset of low-cost restoration cycles on the network. The cost of a restoration cycle may be based, in part, on the avai... | 06/28/2011 |
| 7962619 | Methods and systems for extensible markup language control of network equipment The present invention utilizes an XML-based protocol for controlling a plurality of settings to tie network equipment together, such as telecommunications, cable, enterprise, wireless, etc., across different transport network technologies, including optical, wireles... | 06/14/2011 |
| 7944941 | High speed Ethernet based on SONET technology A high-speed Ethernet using Thin SONET technology as the physical layer carrier makes use the large embedded base of SONET equipment, and is a step forward in integrating WANs, MANs and LANs. The HS Ethernet also takes advantage or current SONET functionality, such ... | 05/17/2011 |
| 7536197 | Apparatus and method of loop and rate dependent power cutback Methods for reducing power required for transmitting a signal from a first transceiver to a second transceiver are described. The methods comprise the steps of estimating an excess amount of power used by the first transceiver for transmitting the signal, reducing t... | 05/19/2009 |
| 7525981 | Glare resolution An embodiment of the invention provides a method for glare resolution in a network. The method first designates a master node and a slave node. The method prevents the slave node from initially allocating a first line and a first timeslot for a first sub network con... | 04/28/2009 |
| 7522835 | Method of testing bit error rates for a wavelength division multiplexed optical communication system In a wavelength division multiplexed (WDM) optical communication system having optical transmitters and receivers communicating via a optical channels, the bit error rate (BER) for the optical channels is tested simultaneously by performing a BER measurement for the... | 04/21/2009 |
| 7512674 | Framework for enabling dynamic construction of a network element management mechanism A framework is disclosed which enables a management system to manage completely different type of network elements (NEs) running different versions of their embedded software by introducing generic operational interfaces, generic data interfaces, information descrip... | 03/31/2009 |
| 7512343 | Bidirectional communication system A bidirectional communication system is disclosed. A single optical line amplifier is used to amplify signals in both the east and west directions. Additionally, a single dispersion compensation module is used to compensate for fiber dispersion in both directions. U... | 03/31/2009 |
| 7417950 | Method and apparatus for performing data flow ingress/egress admission control in a provider network A method, apparatus and network for transporting layer-2 frames, such as Ethernet MAC, ATM AAL5, and Frame Relay, over MPLS, SONET/SDH, or OTN optical transport networks as well as electrical transport networks is disclosed. The method establishes “pseudo-wires”... | 08/26/2008 |
| 7509109 | Adaptive correction of a received signal frequency response tilt Distortion due to transmission characteristics of a transmission medium is corrected by measuring leakage in a signal orthogonal to a received signal. The frequency response of an equalizer is adaptively adjusted until the measured leakage is at a local minimum.... | 03/24/2009 |
| 7505683 | Method, system and storage medium for monitoring power control loops in optical communication networks A method, system and storage medium for monitoring power control loops in an optical communication network. The method includes polling network elements to obtain power management information for the network elements. A set of power management rules is selected base... | 03/17/2009 |
| 7505496 | Systems and methods for real-time compensation for non-linearity in optical sources for analog signal transmission The present invention provides a compact analog directly modulated laser configuration that is suitable for use in the field that uses electrical feedback to compensate for non-linearity in real time, such that no matter how the LI curve changes, the electrical feed... | 03/17/2009 |
| 7499652 | Modular add/drop multiplexer including a wavelength selective switch Consistent with the present invention, tunable demultiplexers are provided in WSS-based add/drop multiplexer. The tunable demultiplexers are modular and thus allow the add/drop multiplexer to be readily expandable, and facilitate flexible add/drop capabilities where... | 03/03/2009 |
| 7483205 | Transient optical power suppressing apparatus, method, and network An apparatus for suppressing optical power transients includes a variable optical attenuator receiving an input optical signal and outputting an output optical signal; an optical power sensing element coupled to the input optical signal and sensing a portion of the ... | 01/27/2009 |
| 7483125 | Method for wavelength independent dispersion penalty measurement The present invention provides a method for the wavelength independent measurement or testing of the dispersion penalty, or dispersion tolerance, of optical transmitters that comprises a single setup, measures or tests the components only to a specified amount of di... | 01/27/2009 |
| 7477663 | High layer bonding of multiple access lines for carrier grade access Apparatus and method that increases bandwidth and reliability of digital subscriber line (DSL) connections. The system involves provisioning multiple DSL lines, splitting traffic into cells, transmitting the cells independently of each other, and reassembling the ce... | 01/13/2009 |
| 7463678 | Equalization scheme for DSL receivers in presence of an under-sampled or over-sampled transmit IDFT A circuit and method is provided for reducing the effect of having potentially different sizes for an Inverse Discrete Fourier Transform (IDFT) at a transmitter and a Discrete Fourier Transform (DFT) at a receiver in a telecommunications system without requiring a c... | 12/09/2008 |
| 7321590 | Methods for aggregating cells transported in a bonded group Transporting an asynchronous transfer mode (ATM) stream through a bonding group involves properly splitting the stream into sub-streams to fit into individual member bearer's bandwidth at the transmit end, and properly merging the sub-streams to reconstruct the stre... | 01/22/2008 |
| 7283462 | Multiple bundle identification for calculation of a network protect path Consistent with a feature of the present invention, protection and working routes are determined by assigning administrative weight values to each route in a network. The administrative weight value of a route can correspond to the physical distance associated with ... | 10/16/2007 |
| 7280762 | Optical communication system having dynamic gain equalization An optical communication device, and related method, are provided for providing a tailored, spectrally non-uniform gain over a broad spectrum. In particular, the optical communication device includes an optical amplifier having a dynamic gain equalization (DGE) circ... | 10/09/2007 |
| 7280529 | Providing network management access through user profiles The present invention provides a method for managing telecommunications networks through user profiles that establish management capabilities and lists of network devices capable of being managed through each user profile. Through profiles, users may be given contro... | 10/09/2007 |
| 7274738 | System for improving performance of compression and decompression algorithms in a telecommunication system In a telecommunications system, an arithmetic logic unit (ALU) that receives an input signal. The input signal includes a digital signal representative of an analog signal. The ALU selectively performs compression and decompression on the digital signal. The ALU com... | 09/25/2007 |
| 7269347 | Optical receiver decision threshold tuning apparatus and method A method of controlling an optical signal receiver utilizes three control loops: a first control loop tunes the decision threshold of the receiver when the optical network is in a substantially steady state and a second control loop rapidly switches to a reference d... | 09/11/2007 |
| 7266595 | Accessing network device data through user profiles The present invention provides a method and apparatus for accessing network device data through user profiles. User profiles may be created by network administrators, and the corresponding user profile data may be stored in a central network management system (NMS) ... | 09/04/2007 |
| 7263597 | Network device including dedicated resources control plane The present invention provides a method and apparatus for improving transmission of control information within a network device and between multiple connected network devices. Specifically, a control path is included within a network device that is independent of th... | 08/28/2007 |
| 7254335 | Stackable WDM arrangement A module that includes both an “add-in”/“drop-out” pair of ports and a “drop-in”/“add-out” pair of ports comprises an arrangement of elements that combines an optical signal having a chosen wavelength with an optical signal applied at the “add-in... | 08/07/2007 |
| 7254327 | Switching status and performance monitoring technology for wavelength selective switch and optical networks A universal in-service monitoring scheme to monitor performances of optical networks, including elements that make up the optical network, is proposed. The elements may be a wavelength selective switch or an optical cross connect. In this scheme, a small tunable pro... | 08/07/2007 |
| 7242867 | Optical cross connect synchronization architecture and method A synchronization architecture for a cross connect switch having an ingress stage, a center stage, and an egress stage utilizes optical interfaces and media to distribute a system clock and frame sync to the I/O modules and switch fabric so that system can reassign ... | 07/10/2007 |
| 7242859 | Method and system for providing protection in an optical ring communication network A method and system for providing tandem protection in a communication system. Path protection is provided using at least two redundant communication paths and selecting the communication having higher signal quality. Interface protection is provided through a prote... | 07/10/2007 |
| 7222147 | Processing network management data in accordance with metadata files The present invention provides a management system internal to a network device that sends various management data files and corresponding metadata files to a management system external to the network device. The external management system then uses the metadata fil... | 05/22/2007 |
| 7206508 | Method and apparatus for operation, protection, and restoration of heterogeneous optical communication networks Techniques for providing normal operation and service restoration capability in the event of failure of terminal equipment or transmission media in a heterogeneous network, such as a hybrid network containing single- and multi-wavelength lightwave communications sys... | 04/17/2007 |
| 7200109 | Method and system for protecting frame relay traffic over SONET rings A frame relay (FR) protection method generates an OAM frame to other nodes upon detecting a defect on a SONET ring. The protection frame comprises a type of failure and a location of failure. A node that detected the defect transmits the protection frame to other no... | 04/03/2007 |
| 7184432 | Switch fabric architecture and techniques for implementing rapid hitless switchover A switch is provided that receives user information through a plurality of framer circuits, which group the user information into frames. The frames are fed to a switch fabric including an array of switch elements, each having a switch matrix for routing each frame ... | 02/27/2007 |
| 7181499 | Method, system and storage medium for simultaneous software image distribution to multiple optical network elements A method, system and storage medium for synchronous communication with multiple network elements in an optical communications network. The method involves distributing software to a number of network elements. A gateway network element receives an initialization req... | 02/20/2007 |
| 7181141 | Method and system for collecting network topology in an optical communications network An exemplary embodiment of the invention is a network element in an optical communications network. The network element includes a data collection application program interface (API) for receiving a request from a client for network topology information along with a... | 02/20/2007 |
| 7175514 | Polishing fixture assembly for a fiber optic cable connector polishing apparatus An apparatus that mass polishes a variety of fiber optic cable connectors simultaneously. The apparatus includes a plurality of polishing plates, each capable of holding its own polishing film and pad, and having a varying height. The apparatus further includes a pl... | 02/13/2007 |
| 7174547 | Method for updating and restoring operating software in an active region of a network element A method for replacing a current operating software with a new operating software in a working network environment during network operations while also preserving a backup for the replaced operating software. The method including active or non-active memories based ... | 02/06/2007 |
| 7167483 | System and method for managing subrate services in an optical network A system and method of managing subrate paths in an optical network. An example embodiment is a network administration application or component. The application receives a description of a desired service for an optical network through a graphical interface. The app... | 01/23/2007 |
| 7167445 | Virtual line switched ring (VLSR) connection state distribution scheme Systems and methods consistent with this invention allow for each node within one or more rings to obtain connection and topology information from other nodes within these rings. In such a system, each node is able to maintain connection table and topology tables fo... | 01/23/2007 |
| 7143153 | Internal network device dynamic health monitoring The present invention provides a method and apparatus for internal network device dynamic health monitoring. To increase network device availability, internal network device evaluations of resource attributes are conducted against threshold expressions and network m... | 11/28/2006 |
