| Patent Number |
Title Of Patent |
Date Issued |
| RE40148 |
Switched connections diagnostics in a signalling network |
March 11, 2008 |
| A method is disclosed for detecting and diagnosing faults in a network. The network has a plurality of nodes through which switched virtual connections can be established. First, all attempts at establishing routes through the network are recorded. Then, the location of a failure is |
| RE39103 |
Timing reference for scheduling data traffic on multiple ports |
May 23, 2006 |
| Data traffic such as cell streams in an ATM communication network frequently contain data destined for multiple output ports having different transmission data rates. In order to accurately schedule such traffic a clocking signal unique to each output data rate is required. This inve |
| 7373663 |
Secret hashing for TCP SYN/FIN correspondence |
May 13, 2008 |
| A mechanism for detecting denial of service attacks in a digital communications system is described. A probabilistically determined portion of input packets of a connection are processed using a hash function to determine whether the packets belong to the flow initiated by a TCP SYN |
| 7369504 |
Bandwidth management of resilient packet ring network |
May 6, 2008 |
| Techniques for bandwidth management and flow control on a resilient packet ring (RPR) network is described. The RPR requires allocation and guarantee of a bandwidth for each channel between two nodes on the ring. The bandwidth is managed by shaping traffic on a channel at the source by |
| 7359939 |
Fast service restoration for lost IGMP leave requests |
April 15, 2008 |
| Whenever a DSLAM or a network node receives a Group Join message, it compares the MAC address of the originating STB to that of previous Join messages with their existing connections. If a match is found, then the DSLAM will initiate a GSQ for the group of the matching previous Join |
| 7346008 |
Method and apparatus for data driven network management |
March 18, 2008 |
| A method and apparatus for communicating functional characteristics of nodes in a communications network to the network manager in the network is presented. This is accomplished by defining a bit field that indicates whether or not a particular functions or services are supported by a |
| 7337221 |
System and method for managing information for elements in a communication network |
February 26, 2008 |
| The invention provides a system and method of managing service information in a network management system. The method includes the steps of loading the service information from a database into objects in a structure stored in a memory, receiving a change to be made to the service inf |
| 7330888 |
Partitioned interface architecture for transmission of broadband network traffic to and from an |
February 12, 2008 |
| There is a disclosed communications network for the transmission of network traffic from a distribution network to an access network having at least one end user terminal. The distribution network and the access network each having a respective traffic transmission capacity with the |
| 7328434 |
System and method for managing configurable elements of devices in a network element and a netwo |
February 5, 2008 |
| The invention provides a system and a method of selecting a version of a program code from a series of program codes for a program element associated with a hardware element for a circuit board. The invention identifies a compatible program code for a particular hardware element and |
| 7327735 |
System and method for detecting lost messages transmitted between modules in a communication dev |
February 5, 2008 |
| A method and module for tracking transmission of messages being sent from a transmitting module to a receiving module in a communication device is provided. The method includes the step of (a) receiving a message at the receiving module. The method also includes the step of (b) evaluatin |
| 7327725 |
Method and apparatus capable of transferring very high data rates across a midplane or backplane |
February 5, 2008 |
| A method and apparatus of communicating data packets across the midplane of an electronic system in which the packets are partitioned into segments of a predetermined size and then serialized to a predetermined width. The serialized packets are transmitted, in phase staggered segment |
| 7327688 |
Digital communications system |
February 5, 2008 |
| A computer communications network comprises a plurality of interconnected ATM switches forming a WAN or LAN area network over which ATM cells are transmitted, and a plurality of user devices including LAN interface adapters for connection to one or more to local area networks (LANs). An |
| 7310341 |
System and method for parallel connection selection in a communication network |
December 18, 2007 |
| The invention provides a system and method of a selecting an egress connection from egress connections at a node for a call being established in a network along a path being associated with the node. Each connection has sufficient bandwidth to carry the call and terminates at a same |
| 7305554 |
Dynamic acquisition of state during security system reconfiguration |
December 4, 2007 |
| Systems and methods of dynamically introducing security features into a client-server application program are described. A security server between an application server and a database has multiple security components with a shared dependency. This shared dependency enables the introd |
| 7299218 |
System and method for multiple-threaded access to a database |
November 20, 2007 |
| The invention provides a system and method of retrieving data associated with a file from a database by a field name into local memory. It comprises calculating an address reference for a storage location in the local memory for the data; fetching the data from the database; and util |
| 7295558 |
ATM adaption layer traffic scheduling |
November 13, 2007 |
| The ATM transmitting apparatus for transmitting messages, such as frame relay packets, associated with a plurality of connections comprises ATM layer transmission equipment for receiving multiple messages, segmenting each received message into a plurality of smaller data units, such as 4 |
| 7293076 |
Method and system for automatically numbering shelves in a multi-shelf network element |
November 6, 2007 |
| The present invention provides a system and method of evaluating a shelf connected to a port of a control complex in a network element via a communications link, the shelf having shelf configuration information, and the port having a port identifier. In an embodiment, the method comp |
| 7289514 |
System and method for scheduling data traffic flows for a communication device |
October 30, 2007 |
| The present invention provides a system and method for providing a different quality of service to a flow associated with an aggregate flow is provided. For an embodiment, the method comprises scheduling a plurality of data traffic flows in a communication network, the method compris |
| 7289436 |
System and method for providing management of fabric links for a network element |
October 30, 2007 |
| A system and method for managing communication links connecting components in a network element is provided. The network element has a first component, a second component and at least two communication links. The communication links are adapted to provide a first connection and a sec |
| 7284272 |
Secret hashing for TCP SYN/FIN correspondence |
October 16, 2007 |
| Methods of preventing flooding-type denial-of-service attacks in a computer-based network are described. Connection establishing messages known as SYN packets are matched with connection terminating messages (FIN packets) by using a hash algorithm. The hash algorithm or message diges |
| 7284269 |
High-speed adaptive structure of elementary firewall modules |
October 16, 2007 |
| A communications security system has been described. The security system in the form of a firewall is made up of a plurality of communicatively coupled sets of modules in a matrix configuration. The modules may be implemented in hardware and software in order to rely on the advantages |
| 7284234 |
System and method for implementing maintenance functions for a switch |
October 16, 2007 |
| In the invention, a system and method providing maintenance functions for an electronic device is provided. The system and method utilize configurable software tools to provide executable routines for a maintenance function related to the electronic device. The system and method empl |
| 7283917 |
System and method for calibrating an adjustable delay time for a delay module |
October 16, 2007 |
| A timing calibration system for an adjustable delay time of a delay module for an electronic circuit is provided. The system includes a control delay module including at least one calibration delay module, the control delay module having a second delay time. The system also includes a |
| 7283467 |
Procedures for improving call routing in PNNI networks |
October 16, 2007 |
| A method and system for improving call routing in a PNNI network using crankback messaging. A destination logical group node (LGN) blocked crankback procedure is used by entry border nodes, in the event of a failed connection attempt, to instruct preceding routing capable nodes to ro |
| 7283461 |
Detection of denial-of-service attacks using frequency domain analysis |
October 16, 2007 |
| Methods and apparatus for detecting denial of service attacks on a system in a communications network are provided. A frequency analysis is performed on certain types of packets that arrive with a periodic nature. A frequency power spectrum obtained through Fourier Transform reveals |
| 7280543 |
Extensible OAM support in MPLS/ATM networks |
October 9, 2007 |
| A method of processing OAM messages by network elements in a communications network is described. Elements in the network are provided with configuration information respecting OAM messages together with connection signaling upon setting up a call through the network. Each network el |
| 7260083 |
MPLS implementation on an ATM platform |
August 21, 2007 |
| A method of timing an attempt to establish a connection path between a first and second node in a communications network is provided. The method initiates the attempt to establish a connection path after a period of time has elapsed wherein the period of time is greater than another |
| 7257121 |
System and method for mapping quality of service levels between MPLS and ATM connections in a ne |
August 14, 2007 |
| A system and method of translating a set of transmission parameters related to a first transmission protocol from said first transmission protocol to a second transmission protocol for a data element being sent on a connection from a first communication network utilizing the first tr |
| 7254112 |
System and method for reassembling packets in a network element |
August 7, 2007 |
| A method and apparatus for sending packets from traffic flows to queues in a network element is provided. Each traffic flow has a packet size parameter indicating a sizing constraint for its packets. The method includes the step of grouping the traffic flows into groups utilizing the |
| 7234000 |
System and method of downloading configuration data from a central location to components for a |
June 19, 2007 |
| A router is disclosed for use in a network to carry data packets therein. Each router provides a hop along a path through the network extending from a source network address node to a destination network address node. Each route for routing data packets contains a destination network |
| 7233987 |
System and method for converting requests between different multicast protocols in a communicati |
June 19, 2007 |
| The invention provides a system and method for generating and evaluating a request in a protocol from another request formed in another protocol. Therein, the request relates to a change of membership to a group and the group relates a service to a host of the service in a communication |
| 7233568 |
System and method for selection of redundant control path links in a multi-shelf network element |
June 19, 2007 |
| A system for selecting an active control path link as a communication link between a control shelf and a controlled shelf in a multi-shelf network element is provided. The system includes a first and a second control path links connecting the control shelf to the controlled shelf. The |
| 7228356 |
IGMP expedited leave triggered by MAC address |
June 5, 2007 |
| Method and apparatus for improving channel changing or channel surfing functionality in IGMP supported services. |
| 7222191 |
System and method for call-blocking-triggered topology updates in source routed signaling protoc |
May 22, 2007 |
| Advertising available resource information for a link in a communication network is provided. The network uses a source routing protocol. The source routing protocol uses the available resource advertisements for identifying a path for a call routed through the node in the network. The |
| 7212528 |
System and method for reassembling packets in a network element |
May 1, 2007 |
| A system and method of reassembling packets from traffic flows in a network element is provided. Each of the packets has at least one data part. The method includes the steps (1) queuing each of the data parts of the packets of traffic flows in a single reassembly queue in a sorted o |
| 7209477 |
Multi-subshelf control system and method for a network element |
April 24, 2007 |
| A multi-shelf communication system for a communication switch having shelves is provided. There is a master generating commands and receiving status signals, slaves associated with the master, a communication controller per slave, a downstream communication link providing a multiplex |
| 7209455 |
Physical layer interface system and method for a wireless communication system |
April 24, 2007 |
| Physical layer interface system for use in a broadband wireless access communication network is provided. The broadband wireless access communication network comprises a base station, a subscriber station and a wireless communication link for transmitting wireless communication signa |
| 7206287 |
Method and system for isolation of a fault location in a communications device |
April 17, 2007 |
| The present invention provides a system and method of identifying a failure location in a datapath in a communication element, the datapath traversing from an ingress point through at least a first component to an egress point. In an embodiment the method comprises: providing a diagn |
| 7200110 |
Method and apparatus for prioritized release of connections in a communications network |
April 3, 2007 |
| There is provided a method and apparatus for the ordered release of connections from a network entity in a signalling communications network upon the detection of the failure of a signalling link or a port corresponding to such connections. A priority indicator is associated with eac |
| 7197033 |
System and method for establishing a communication path associated with an MPLS implementation o |
March 27, 2007 |
| A system and method of configuring a communications path in a communications network from a start node to an end node through intermediate nodes is provided by: establishing a partial path for the communications path from the start node to a terminating node in the intermediate nodes |
| 7190671 |
Mitigating denial-of-service attacks using frequency domain techniques |
March 13, 2007 |
| Methods and apparatus for mitigating denial of service attacks in a communications network are described. Frequency domain techniques such as Fourier Transform are used to detect packet flooding in which a frequency spectrum reveals a periodic pattern to the attack packets. A pulse g |
| 7184440 |
Multi-protocol switch and method therefore |
February 27, 2007 |
| A multi-protocol switch that supports both ATM and IP traffic and method for use is presented. The multi-protocol switch associates certain input connections, as identified by virtual path identifier/virtual connection identifier (VPI/VCI), with either IP or ATM traffic. When the connect |
| 7177924 |
Command line interface processor with dynamic update of attribute dependencies |
February 13, 2007 |
| The solution provides automated Command Line Interface (CLI) based configuration management of managed communications network entities. The automation eliminates manual CLI command entry and provides support for independently-developed multi-vendor equipment by using multiple CLI com |
| 7173908 |
Flexible policing technique for telecommunications traffic |
February 6, 2007 |
| A policing technique for a telecommunications traffic of variable length packets is described. The technique uses a plurality of police engines, grouped in pairs. A selection module selects a police engine pair to process a packet. Each police engine contains a conformance unit, credit |
| 7170908 |
System and method of selecting sources for a network element having redundant sources |
January 30, 2007 |
| A source selection system for a communication switch for selecting a primary datasource from a plurality of datasources is provided. The system includes a validation module associated with the plurality of datasources adapted to monitor each datasource of the plurality of datasources |
| 7164652 |
System and method for detecting failures and re-routing connections in a communication network |
January 16, 2007 |
| A method of re-establishing a connection for a communication link is provided. The link has first and second portions, having the first portion in a first communication network, the second in a second communication network and an interface connecting first portion to the portion. The |
| 7146451 |
PCI bridge and data transfer methods |
December 5, 2006 |
| A bridge for interconnecting a processor to a peripheral device by way of a PCI bus may have a read buffer. The bridge autonomously requests data from the peripheral device and places received data in the read buffer. The processor reads the data from the receive buffer. The bridge may h |
| 7145868 |
Congestion management in a multi-port shared memory switch |
December 5, 2006 |
| A method and system for detecting and controlling congestion in a multi-port shared memory switch in a communications network. The proposed congestion management scheme implements a local and a global congestion monitoring process. The local monitoring process monitors the queue dept |
| 7130877 |
Request processing switch |
October 31, 2006 |
| Methods and components for processing Universal Resource Locator (URL) requests for web content are presented. The application servers and/or application software implement request switching components adapted to route URL requests for web content to servlets adapted to perform modul |
| 7116642 |
SONET/SDH data link administration and management |
October 3, 2006 |
| A network management and administration system provisioning data links in an optical networking environment is provided. The network management and administration system makes use of connectivity information in establishing and monitoring data links. The connectivity information incl |
