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7512337 |
Gigabit ethernet passive optical network having double link structure
A Gigabit Ethernet passive optical network (GE-PON) having a double link structure is disclosed. The GE-PON includes an optical line terminal (OLT), a plurality of optical couplers, and a plurality...
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7512147 |
Method of reserving network bandwidth resources, and communications system and network device using the same
A communications system whose bandwidth resources can be used more efficiently by reserving them on an individual path basis. Upon receipt of a bandwidth reservation message, a path setup initiator...
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7508754 |
Method and system to support internal calling upon loss of connection with IP Centrex server
A method and system for facilitating calling within an enterprise network upon failure of a landline connection between the enterprise network and an outside call server such as an IP Centrex...
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7505399 |
Receive load balancing on multiple network adapters
Systems, methodologies, media, and other embodiments associated with network load balancing are described. One exemplary system embodiment includes a load balancing logic configured to cause...
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7502313 |
Virtual path restoration scheme using fast dynamic mesh restoration in an optical network
A method for restoring a virtual path, provisioned between a source and a target node, in a mesh zoned optical network is described. The method, in one embodiment, broadcasts or floods restore path...
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7496029 |
System and method for reacting to miscabling defects in resilient packet ring networks
System and method for handling miscabling defects in a node in a resilient packet ring (“RPR”) network are described. In one embodiment, the method comprises detecting a miscabling defect at...
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7496030 |
Managing loops between network devices by monitoring MAC moves
A technique for managing loops between network devices such as customer and carrier edge devices involves monitoring the MAC moves that occur at a device to detect the existence of a loop and...
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7492704 |
Protocol definition for software bridge failover
A method, data processing system, and computer usable code are provided for protocol definition for software bridge failover. In a first aspect of the present invention, a first software bridge...
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7493535 |
JTAG circuit transferring data between devices on TCK terminals
The present disclosure describes using the JTAG Tap's TMS and/or TCK terminals as general purpose serial Input/Output (I/O) Manchester coded communication terminals. The Tap's TMS and/or TCK...
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7489668 |
Method for transmitting a frame at a high rate in a wireless local area network
A method for transmitting data at a high rate in a wireless LAN is provided. A wireless access point requests reliable node information from a wireless terminal having a transfer rate equal to or...
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7486610 |
Multiple virtual router group optimization
Methods and apparatus to transition between four states that include a new state, a listening state, a standby state, and an active state. A router includes a plurality of virtual ports. The...
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7480281 |
Method for improving cluster bring-up in a distributed topology liveness system
A method is provided for establishing clusters in a distributed data processing environment having a plurality of nodes. The frequency of messages sent for the purpose of cluster formation is...
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7471697 |
Multiplex transmission system for reporting alert information to the conversion device on the receiving side without using a dedicated frame
A multiplex transmission system is disclosed in which, in the event of a problem between a converter and a client device on the transmitting side, the occurrence of this problem is reported to a...
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7469282 |
Method and system for provisioning and maintaining a circuit in a data network
A method and system are provided for provisioning a circuit in a data network without manual intervention. A network management module receives an order for provisioning the circuit and then, based...
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7466646 |
Method and system for automatically rerouting logical circuit data from a logical circuit failure to dedicated backup circuit in a data network
A method and system are provided for automatically rerouting logical circuit data from a physical circuit failure in a data network. When a failure in a logical circuit is detected, a label or...
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7463579 |
Routed split multilink trunking
In one embodiment, the invention relates to a method in which at least two aggregation devices, which logically operate as a single device, are interconnected by an Inter Switch Trunk (IST) link....
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7463578 |
Transmission parameter control device
A transmission parameter control apparatus that improves transmission quality of real-time media in a transmission route that includes a wireless section in at least a part of the transmission...
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7460783 |
Method and apparatus for dynamic provisioning of reliable connections in the presence of multiple failures
Method and apparatus for dynamic provisioning of reliable connections in the presence of multiple failures in optical networks are described. One embodiment is a method for allocation of protection...
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7460468 |
Method and system for automatically tracking the rerouting of logical circuit data in a data network
A method and system are provided for automatically tracking the rerouting of logical circuit data in a data network. Current reroute statistics are automatically generated upon the rerouting of...
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7457234 |
System and method for protecting communication between a central office and a remote premises
A data communication system for communicating between a central office and a remote premises comprises a first transceiver, a second transceiver, and control logic. The first transceiver is coupled...
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7457233 |
Method and apparatus for fast reroute in a connection-oriented network
A method and an apparatus for rapidly resuming, at times of failures, network traffic in a connection-oriented network by using an alternative route pre-computed and stored locally in nodes along...
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7453825 |
Apparatus and methods for point-to-point links in robust networks
One embodiment disclosed relates to a method of operating a network switch to provide wireless redundancy in a network. A keep-alive control packet is periodically transmitting over a wireless...
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7453795 |
Fault recovery for communication networks
A control system for a communication network stores a plurality of fault recovery plans that are respectively associated with a plurality of links. The control system processes a first control...
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7453891 |
Clusters of devices, softwares and methods for improved handling of a gatekeeper load in VoIP communication
A cluster of alternate gatekeepers handles the load of a single logical zone. The alternate gatekeepers exchange signals among each other according to a special cluster protocol. Each alternate...
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7450493 |
System and method of forwarding K-bytes between optical cards in a communications system
Described are a system and method for forwarding K-bytes between optical cards in a communication system. The system includes a first card and second card each connected to a backplane. The second...
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7450494 |
Reconfigurable apparatus providing 1:N and 1:1 equipment redundancy for high speed broadband interfaces with 1+1 and 1:N automatic protection switching
A reconfigurable apparatus providing 1:N redundancy and 1:1 redundancy for high speed broadband interfaces with 1+1 and 1:N Automatic protection Switching (APS), is presented. The apparatus...
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7450516 |
Link selection schemes for avoiding channel contention
A connection in an optical communication system is routed over a sequence of cross-connects and aggregated links comprising multiple links. A different link selection algorithm is used for service...
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7451252 |
Method for determining the availability of paths to a device
Disclosed is a method for selecting one of multiple proposed paths to a device. For each proposed path, a determination is made of a number of components the proposed path shares with existing...
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7447148 |
Method for supporting scalable and reliable multicast in TDMA/TDD systems using feedback suppression techniques
A method supports scalable and reliable multicast in a wireless network with a large bandwidth-delay product. In this method, acknowledgement packets from different receivers experiencing the same...
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7447146 |
Method and apparatus for supporting multiple independent failure domains
A method of error protection. In one embodiment, the method of error protection consists of detecting an error during communication between nodes in a network. The nodes are separated by a link in...
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7447147 |
Ethernet switch with configurable alarms
According to one embodiment, an Ethernet switch includes a plurality of ports operable to receive and transmit Ethernet traffic. The Ethernet switch also includes system monitoring software...
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7443789 |
Protection switching mechanism
A system and method for protection switching in a transmission network is described. A protection switching mechanism comprises a multiplexer, a transmission path for each output of the multiplexer...
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7443787 |
Cluster system, cluster member, and failure recovery method and program thereof
Distribution processing control unit determines a main processing range and a sub-processing range whose charges are taken by a cluster member to which the unit belongs. Among packets multicast to...
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7443786 |
Apparatus and methods for home agent resiliency for mobile IPv4
Providing resiliency for mobile terminal data sessions, wherein the data sessions rely on Internet Protocol Version 4 and wherein at least one Home Agent node maintains a mobility bindings database...
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7443785 |
Selective error correction for ad hoc networks having multiple communication modes
Error control is provided in an ad hoc network having an asynchronous communication mode and a synchronous communication mode. A packet including a header and a payload is received. The header...
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7440393 |
Method and system for managing communication in a data network
The present invention provides a method and system for managing communication in a data network. The method and system involves monitoring the communication channels at the host level. The hosts...
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7440394 |
Method and system for redundant IP forwarding in a telecommunications network
A new feature for a network element or a router is described herein. The feature is implemented in the router as a route manager object. The first function of the feature is realized by trapping...
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7433300 |
Synchronization of configuration data in storage-area networks
Many storage-area networks (SANs) were developed to facilitate high-speed storage of large quantities of digital data. However, at least some conventional SANs present increased maintenance costs...
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7433299 |
Fault-tolerant updates to a distributed fibre channel database
Fault tolerant techniques to update a distributed database in a switched-fabric network. A commit master switch initiates an update operation using a four-phase process that provides for the...
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7433302 |
Ethernet network implementing redundancy using a single category 5 cable
A method for providing redundancy in a daisy chain local area network employing Category 5 cabling for connecting network devices uses the normally unused twisted wire pairs in the single Cat 5...
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7428208 |
Multi-service telecommunication switch
Multi-service telecommunication switches which include enhanced component redundancy and which also allow multiple chassis connections to a switching fabric enhance the likelihood that packets...
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7428214 |
Methods and devices for high network availability
Methods and devices are provided for simulating a direct failure between a network device and an end device. In some implementations, the network device is a gateway of a first network and the end...
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7423962 |
Redundancy and load balancing in a telecommunication unit and system
The invention relates to backing up a network element (NE) in a telecommunications system. The network element (NE) comprises at least two cluster nodes (A, B, C) that are redundancy units of each...
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7420924 |
Transmission device
In a state where although the setting of a line between a transmitting station and a receiving station is completed, no signal is transmitted, a test signal in a prescribed format is transmitted...
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7418036 |
Method and circuit for timing pulse generation
In a method and a circuit for timing pulse generation, a frame pulse of a corresponding system is masked when an alarm signal of either a working system or a protection system is received, a...
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7414965 |
Hitless protection switching
A network element with equipment protection has first and second redundant signal paths for first and second redundant signals; a selector for selecting either of the two redundant signals as...
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7415087 |
Circuits with state circuitry having cross connected control inputs
Data is communicated through two separate circuits or circuit groups, each having clock and mode inputs, by sequentially reversing the role of the clock and mode inputs. The data communication...
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7411945 |
Adaptive router architecture enabling efficient internal communication
A router comprising a plurality of elements, each having an element identifier, subdivided into a plurality of groups of at least one element. Each group has a common identifier and each member...
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7408874 |
Method for moving network elements with minimal network outages in an active ATM network
A method for moving permanent virtual circuits in an ATM network with minimal downtime includes creating a list of the permanent virtual circuits to be moved; building a set of shadow permanent...
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7406029 |
Fault tolerant optical data communication network having auto discovery
A fiber-optic networking system that can survive a break in the fiber and restore full connectivity to all nodes in the network. The network can detect the presence of a cut in the fiber, locate...
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