Of A Switching System Patents (Class 370/250)
  • Publication number: 20140112159
    Abstract: Embodiments of the invention employ specially adapted P2MP and MP2P transmission techniques to communicate traffic of a TDM based SCADA system over an IP/MPLS based network. Advantageously, by specially adapting P2MP and MP2P transmission techniques to carry TDM based SCADA traffic over an IP/MPLS network, an existing TDM based SCADA system can be migrated to an IP/MPLS network and operated in an easy to manage and bandwidth efficient manner as compared to a solution that employs point-to-point connections between a SCADA master node and subsystems over an IP/MPLS network. Furthermore, since TDM based SCADA equipment would not need to be replaced with IP based SCADA equipment in such a migration, significant equipment and installation costs associated with such replacement can be avoided.
    Type: Application
    Filed: October 23, 2012
    Publication date: April 24, 2014
    Inventors: Alp DIBIRDI, Daniel LAFLEUR
  • Patent number: 8706893
    Abstract: A system and method for providing multimedia communication between a firewall protected, LAN based endpoint and an endpoint that is external to the LAN. A logical port of a multimedia communications control unit is attached to the LAN behind the firewall. Another logical port of the multimedia communications control unit is attached to the external endpoint. Multimedia communication data, consisting of call management data and media data, can be exchanged between the endpoints via the multimedia communications control unit. The multimedia communications control unit allows only multimedia communication data that strictly adheres to a particular communications protocol to pass through. Thus, the security afforded by the firewall is not compromised.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: April 22, 2014
    Assignee: Polycom Israel, Ltd.
    Inventors: Roni Even, Uri Rabinerzon
  • Patent number: 8699357
    Abstract: Improved techniques are disclosed for detecting instability events in data communications systems that support inter-administrative domain (inter-domain) routing. For example, a technique for detecting an instability event in a communications system supporting inter-administrative domain routing includes the following steps. At an inter-domain router, one or more features are extracted from one or more messages obtained from at least another router in the communications system. The one or more extracted features include a path length feature, a path edit distance feature, or a combination thereof. Then, the inter-domain router detects whether an instability event has occurred in the communications system based on the one or more extracted features such that an action can be effectuated. By way of example, the one or more messages may include one or more border gateway protocol update messages and the inter-domain router may be a border gateway protocol router.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: April 15, 2014
    Assignee: Alcatel Lucent
    Inventors: Shivani Deshpande, Tin Kam Ho, Marina K. Thottan
  • Patent number: 8700821
    Abstract: A device, method, and system are disclosed. In one embodiment the device includes a router to transmit data packets between multiple host controllers and one or more peripheral devices. The router can receive a data packet from a host controller and transmit the data packet to a peripheral device across a data transmission path. The peripheral device is coupled to the first data transmission path through a first universal multi-transport medium (UMTM) connector. The connector includes an optical coupling capable of transporting the first data packet within an optical signal and an electrical coupling capable of transporting the first data packet within an electrical signal.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: April 15, 2014
    Assignee: Intel Corporation
    Inventors: Prashant R. Chandra, Ajay V. Bhatt, Kevin Kahn, Steve McGowan
  • Patent number: 8693357
    Abstract: A system for automated testing of Ethernet signals of a unit under test (UUT) in a simulated Avionics Full Duplex (AFDX) network environment. The UUT may be any Ethernet device, including a 24 port Ethernet switch. Ethernet signal are received from a UUT by a measurement module that is adapted to modify the Ethernet signals according to a condition indicative of an AFDX network environment. Such modification includes attenuating the Ethernet signals with an RF attenuator or terminating the Ethernet signals with a 10 Base-T Ethernet simulation circuit. Modified signals are then monitored or evaluated to determine functionality of the UUT.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: April 8, 2014
    Assignee: Rockwell Collins, Inc.
    Inventors: Philip T. Ridl, Benjamin W. Scilley, Robert L. Eickhorst
  • Publication number: 20140092754
    Abstract: A method is disclosed. The method includes capturing a first packet at a network monitoring card, capturing the first packet at a first filter, generating a first tag corresponding to the first filter and storing the first packet in memory with the first tag.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: Fluke Corporation
    Inventors: James W. Kisela, Steve Koller, William Winston
  • Publication number: 20140064105
    Abstract: A distributed fabric system has distributed line card (DLC) chassis and scaled-out fabric coupler (SFC) chassis. Each DLC chassis includes a network processor and fabric ports. Each network processor of each DLC chassis includes a fabric interface in communication with the DLC fabric ports of that DLC chassis. Each SFC chassis includes a fabric element and fabric ports. A communication link connects each SFC fabric port to one DLC fabric port. Each communication link includes cell-carrying lanes. Each fabric element of each SFC chassis collects per-lane statistics for each SFC fabric port of that SFC chassis. Each SFC chassis includes program code that obtains the per-lane statistics collected by the fabric element chip of that SFC chassis. A network element includes program code that gathers the per-lane statistics collected by each fabric element of each SFC chassis and integrates the statistics into a topology of the entire distributed fabric system.
    Type: Application
    Filed: November 6, 2013
    Publication date: March 6, 2014
    Applicant: International Buiness Machines Corporation
    Inventors: Sushma Anantharam, Nirapada Ghosh, Keshav Govind Kamble, Dar-Ren Leu, Chandarani J. Mendon, Nilanjan Mukharjee, Vijoy Pandey, Nandakumar Peethambaram
  • Patent number: 8665739
    Abstract: In general, techniques are described for measuring packet data unit (PDU) loss in a L2 virtual private network (L2VPN) service, such as a VPLS instance. In one example of the techniques, provider edge (PE) routers that participate in the L2VPN measure known unicast and multicast PDU traffic at the service endpoints for the instance to determine unicast PDU loss within the service provider network. As the routers learn the outbound service (i.e., core-facing) interfaces and outbound local (i.e., customer-facing) interfaces for L2 addresses of customer devices that issue packets to the VPLS instance, the routers establish respective unicast transmit and receipt counters for the service endpoints that serve the customer devices. In another example, PE routers that participate in the L2VPN measure multicast PDU traffic at the service endpoints for the instance and account for internal replication by intermediate service nodes to determine multicast PDU loss within the service.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: March 4, 2014
    Assignee: Juniper Networks, Inc.
    Inventors: Prabakaran Thirumali Sampath, Sri Goli
  • Patent number: 8665700
    Abstract: A method of detecting and mitigating an unintended active state of an in-vehicle communication network. The in-vehicle communication network includes a plurality of electronic control units (ECUs) communicating over a controller area network bus system. Each ECU includes both transmitting and receiving capabilities, and is configured with a communication protocol that provides guidelines for exchanging messages with other ECUs within the communication system. Each ECU enters a communication kernel active state for communicating on the bus. Virtual networks within the communication system are identified. Each virtual network includes a collection of signals involving respective ECUs whose transmission and reception are started and stopped collectively as a unit. Each respective virtual network that is active by fault is detected. Each faulty active virtual network is deactivated.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: March 4, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Shengbing Jiang, Katrina M. Schultz, Kenneth P Orlando
  • Publication number: 20140056152
    Abstract: Port mirroring in a clustered network may be performed between a local switch and a remote switch. A port in the remote switch may be designated a mirrored port where data traffic passing there through can be copied and sent to a mirror-to-port on the local switch. In a virtual local area network (VLAN) environment, data frames of the copied traffic may include a VLAN header identifying the local switch so that routing of the data frames through the network may direct the data frames for monitoring at the local switch.
    Type: Application
    Filed: November 5, 2013
    Publication date: February 27, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: DAVID ILES, KESHAV G. KAMBLE, DAR-REN LEU, CHANDARANI J. MENDON, VIJOY PANDEY
  • Patent number: 8661118
    Abstract: In various embodiments, methods and systems are disclosed for the real time detection of network conditions in conjunction with a remote presentation protocol. The link quality may represent the quality of the end-to-end connection between client and server with upper and lower bounds on the injection of additional traffic used for measurement. In some embodiments, the measurement technique may be selected based on the type of measurement that is desired. Accuracy may be maintained by selecting the type of measurement used based on current and previous network conditions. In one embodiment, a state model is used to determine the frequency of measurement and to determine when the measurements have produced a stable estimate of the link quality.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: February 25, 2014
    Assignee: Microsoft Corporation
    Inventors: Graham Edward Fagg, Rajneesh Mahajan, Moshe Zilberstein, Guatam Swaminathan, Costin Hagiu
  • Patent number: 8660016
    Abstract: The present invention enables testing of a VoIP network using various instrumented test streams. The testing can determine the quality of the transmission network before an internet VoIP service is put into production. The testing also enables regular diagnostic audits of a VoIP network to maintain the quality of the VoIP network. The testing enable measurement of, for example jitter, packet loss and delay and allow characteristics of the VoIP network to be obtained. In addition, the present invention can to determine the capacity and utilization of a VoIP transport network. Based on the measurements and characteristics of the VoIP network the present invention can control routing of a call on the VoIP network or can prevent a call from being made. The present invention also enables dynamic switching of CODECS during a session to enhance the performance of the VoIP network.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: February 25, 2014
    Assignee: Aspect Software, Inc.
    Inventors: Ajay Punreddy, Mike Regan, Marc A. Snider, Richard W. Shea, Brian Silver
  • Patent number: 8654654
    Abstract: There is disclosed apparatus and processes for generating simulated network test traffic from a stored test traffic definition. A network test system or a user may select arbitrary ways to group flows of test traffic into streams, and to modify these streams before and during transmission of the test traffic by network test equipment.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: February 18, 2014
    Assignee: Ixia
    Inventors: Noah Gintis, Vinod Joseph
  • Patent number: 8655969
    Abstract: A report manager for a network test system. At least one present statistic load count may be maintained, the present statistics load count representing a cumulative number of statistics required to generate one or more reports in near-real time. A report request may be received from a user. An incremental statistics load associated with the report request may be determined. A decision whether or not the report request can be fulfilled may be made based on the at least one present statistics load count and the incremental statistic load. When the report cannot be fulfilled, a message denying the report request may be provided to the user. When the report request can be fulfilled, the incremental statistics load may be added to the present statistics load count and the report request may be fulfilled.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: February 18, 2014
    Assignee: Ixia
    Inventors: Flaviu Matan, Marian Gheorghe, Alex Tatar
  • Patent number: 8649275
    Abstract: Methods and computer readable storage media to test secure network connections. One or more pre-calculated encryption data (PCCD) sets may be defined in accordance with a secure communications protocol. The one or more PCCD sets may be stored in a first PCCD memory and a second PCCD memory located respectively within a first port unit and a second port unit of a plurality of port units. Each PCCD set may include at least a first parameter and a second parameter generated by encrypting the first parameter. A simulated secure connection between the first port unit and the second port unit via a network under test may be opened using a selected PCCD set from the one or more PCCD sets without performing decryption processing.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: February 11, 2014
    Assignee: Ixia
    Inventors: Maksim Pyatkovskiy, Soumyajit Saha
  • Patent number: 8644309
    Abstract: A quarantine device 1 performs processing on a network provided with a VLAN-aware Layer 2 Switch 7. The quarantine device 1 includes a terminal detection unit 11 that, when a single terminal is connected to a specified port of the Layer 2 Switch 7 through a VLAN-unaware hub, detects a connection of a new terminal 4 to the hub, and a switch control unit 12 that, upon detecting the connection of the new terminal 4, configures the specified port as a trunk port and, furthermore, configures a first VLAN, which transfers only Ethernet frames having preset tags attached thereto, and a second VLAN, which transfers only Ethernet frames having no tags attached thereto, on the specified port.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: February 4, 2014
    Assignee: NEC Corporation
    Inventor: Keisuke Fujita
  • Patent number: 8644167
    Abstract: An endpoint integrity system controls access to resources of a protected network for endpoint devices attempting to access the protected network. The system may include a number of evaluation modules that communicate with an endpoint device. The evaluation modules generate policy results for the endpoint device, in which each of the policy results assume one of three or more states, called a multi-state policy result. The multi-state policy results are combined to produce a combined Boolean policy result.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: February 4, 2014
    Assignee: Juniper Networks, Inc.
    Inventors: Roger Allen Chickering, Stephen Hanna, Paul Funk, Panagiotis Kougiouris, Paul James Kirner
  • Publication number: 20140022915
    Abstract: According to embodiments of the present invention, there are provided a method, system and apparatus for determining validity of location information in a packet-switched network. A method for determining if location information associated with an endpoint in a packet-switched network is valid, the location information having been stored in a memory, comprises obtaining an access device identifier associated with an access device responsible for handling a communication session between the endpoint and the packet-switched network. The access device identifier is then compared with a last known access device identifier associated with the endpoint to enable determining if the location information is valid.
    Type: Application
    Filed: May 28, 2013
    Publication date: January 23, 2014
    Applicant: BCE INC.
    Inventors: Guy Caron, Jerome Grenier, Stephane Maxime Francois Fortier, Martin Langlois, William Barry Crago
  • Publication number: 20140022916
    Abstract: An approach to duplicating network traffic is described. In one approach, a method of creating multiple copies of network traffic is detailed. The method involves receiving network traffic, producing a duplicate copy of the network traffic, and forwarding the duplicate copy to a monitoring port. The monitoring port forwards copies to a number of indicated ports.
    Type: Application
    Filed: September 18, 2013
    Publication date: January 23, 2014
    Applicant: Foundry Networks, LLC
    Inventors: Hari NATARAJAN, Eskinder SAHLE, Charles HELFINSTINE, Chris OSKUIE
  • Patent number: 8634306
    Abstract: In accordance with embodiments of the present disclosure, a method may include designating one of at least one maintenance point associated with a physical port of a line card as a primary maintenance point, the primary maintenance point comprising either a UP-Maintenance Entity Group End Point (UP-MEP) or one Maintenance Entity Group Intermediate Point (MIP). The method may also include configuring the line card such that the line card stores source addresses of Service Operation, Administration, and Management (SOAM) frames communicated by the primary maintenance point. The method may further include configuring the line card such that the line card does not store source addresses of Service Operation, Administration, and Management frames communicated by maintenance points associated with the physical port other than the primary maintenance point.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: January 21, 2014
    Assignee: Fujitsu Limited
    Inventors: Kumaravel Senthivel, Calvin Wan
  • Patent number: 8634328
    Abstract: Communication ability between nodes in a cluster-based computer system is tracked to inform applications executing on the nodes of the existence and quality of the endpoint-to-endpoint communications available between the nodes. Communications between a node and other nodes are tracked, and a database records the communication ability between the node and the other nodes for each link between the nodes. The tracking and recording are repeated at the other nodes. A registration by an application executing at a particular one of the nodes to receive notifications of changes in the communication ability with another node over a particular link (or in general) will cause notification of the application when the link status changes.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: January 21, 2014
    Assignee: International Business Machines Corporation
    Inventors: Rajeev Mishra, Lance W. Russell
  • Publication number: 20140016482
    Abstract: Methods and apparatus for analyzing network traffic in a network are disclosed herein. The network may include a plurality of network analyzers. An method for analyzing network traffic may include: receiving a data packet at a first network element including a first header that indicates a destination address of a second network element; generating a new data packet including a copy of at least a portion of the received data packet and a second header that indicates a destination address of a plurality of network elements that are configured to monitor the network traffic; transmitting the received data packet to the second network element; and separately transmitting the new data packet. The new data packet may be replicated by one or more network elements along transmission paths between the first network element and the plurality of network elements that are configured to monitor the network traffic.
    Type: Application
    Filed: July 10, 2012
    Publication date: January 16, 2014
    Applicant: CISCO TECHNOLOGY, INC.
    Inventor: Suran Saminda de Silva
  • Patent number: 8630187
    Abstract: A system for testing a network switching apparatus includes one or more port connections external to the network switching apparatus. The one or more port connections are configured to interconnect selected ports of the network switching apparatus to transfer packets between the selected ports. Further, the system includes a test manager configured to automatically generate a plurality of test scenarios for testing a processing operation to be performed by the network switching apparatus on packets. The test scenarios define paths for forwarding packets multiple times among the ports of the network switching apparatus. The system also includes a packet generator configured to transmit packets to at least a first port of the network switching apparatus to test a processing operation performed by the network switching apparatus.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: January 14, 2014
    Assignee: Marvell Israel (M.I.S.L) Ltd.
    Inventors: Gustavo Rodberg, Alexay Groisman, Izik Ovadia-Goldberg, Felix Kaufman, Raviv Shasha
  • Patent number: 8619594
    Abstract: The system and method get a packet trace for a failed communication and a packet trace for a successful communication. The two packet traces are generated with packets from a common protocol(s) shared by the two communications. The failed and successful communications have at least some network elements in common. A field(s) in the common protocol(s) is identified. The field(s) is updated to be the same in both packet traces. The two packet traces are then compared to produce a list of remaining differences that can be used to diagnose problems in the failed communication. The list can also be compared to bills of materials for the failed and successful communications to further enhance diagnosis of the failed communication.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: December 31, 2013
    Assignee: Avaya Inc.
    Inventor: Jean Meloche
  • Patent number: 8619768
    Abstract: Described are a method and a sensor aware network for dynamic processing of sensor data. Network context data are inserted into data packets from sensors or local sensor networks coupled to the sensor aware network. Sensor aware nodes in the sensor aware network can read the context data and can respond by performing specific network actions. The sensor data and network context data are provided to one or more application nodes. The sensor data and network context data can be stored in a database and later searched according to the network context data. Advantageously, sensor data flows can be treated differently by the sensor aware network, the application and the user, depending on the type of sensor data and the actual data values. Thus critical responses to certain sensor data flows can be implemented more efficiently than otherwise possible using conventional network configurations.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: December 31, 2013
    Assignee: Avaya, Inc.
    Inventor: Indermohan Monga
  • Patent number: 8621111
    Abstract: The deployment and scaling of a network of electronic devices can be improved by utilizing one or more network transpose boxes. Each transpose box can include a number of connectors and a meshing useful for implementing a specific network topology. When connecting devices of different tiers in the network, each device need only be connected to at least one of the connectors on the transpose box. The meshing of the transpose box can cause each device to be connected to any or all of the devices in the other tier as dictated by the network topology. When changing network topologies or scaling the network, additional devices can be added to available connectors on an existing transpose box, or new or additional transpose boxes can be deployed in order to handle the change with minimal cabling effort.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: December 31, 2013
    Assignee: Amazon Technologies, Inc.
    Inventors: Michael David Marr, Alan M. Judge, Jagwinder Singh Brar, Tyson J. Lamoreaux, Mark N. Kelly, Daniel T. Cohn
  • Publication number: 20130343206
    Abstract: A call routing system for use with a wireless telephone systems is disclosed. The system, which monitors the subscriber's current physical location, determines the device to which a call should be terminated, and routes the call. The device can be any IP telephone, including a cable television system adapted to IP telephony. The system routes calls without direct subscriber actions, without a second telephone number, regardless of the time of day and day of week. Various options can also apply to a call, determined by subscriber-established preferences, when specified criteria are met, or calls can be limited to/from specified telephone numbers. The system and method uses signaling techniques that will allow routing of the call, along with any authorization or restrictions, to be done remotely from the actual switching of the call. Call events are transmitted to the call routing system while the communications path of the call is held at the switching system awaiting call routing information.
    Type: Application
    Filed: December 10, 2012
    Publication date: December 26, 2013
    Inventor: Counterpath Corporation
  • Publication number: 20130343205
    Abstract: The present invention provides flexible call processing. For example, a call processor system can receive an inbound call intended for a called party and place an outbound call to the called party. The call processing system can provide the called party with a call transfer option.
    Type: Application
    Filed: September 13, 2012
    Publication date: December 26, 2013
    Applicant: CALLWAVE COMMUNICATIONS, LLC
    Inventors: Robert A. Dolan, David F. Hofstatter, Robert Smith, David S. Trandal
  • Patent number: 8614955
    Abstract: There are disclosed methods and a packet receiver for testing a network. A packet may be received from the network at a port unit. The port unit may ignore the received packet if the received packet does not contain a valid test signature. When the received packet contains a valid test signature, the port unit may determine if the port unit is an expected destination for the received packet. When the port unit is not an expected destination for the received packet, a misdirected packet counter may be incremented. When the port unit is an expected destination for the received packet, test data may be extracted from the received packet.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: December 24, 2013
    Assignee: Ixia
    Inventors: Noah Gintis, Alok K. Srivastava, Victor Alston
  • Patent number: 8614946
    Abstract: Disclosed are methods and system to dynamically monitor a number of switching ports of a networking device. In one embodiment, a system is disclosed to monitor network traffic comprising a switch port monitoring device comprising a real-time processor, a packet data processor, a packet queue and a storage device. The system also comprises one or more switches coupled to the switch port monitoring device, where at least one of the switches comprising a switch processor, a switch fabric, one or more ingress/egress ports coupled to the switch fabric, and one or more uplink ports coupling the switch packet to the packet queue of the switch port monitoring device.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: December 24, 2013
    Assignee: Sideband Networks Inc.
    Inventor: Steven O. Noble
  • Patent number: 8614962
    Abstract: There is provided a communication device including a communication state determination section which determines a communication state corresponding to a transmission rate demanded from a simulation engine based on a transmission rate and a state of communication at the transmission rate between a first communication state measurement device and a second communication state measurement device via a real network, a traffic generation section which generates traffic by creating data based on the communication state determined by the communication state determination section, a protocol processing section which creates a packet including the data created by the traffic generation section, and a communication section which transmits the packet created by the protocol processing section to another communication device.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: December 24, 2013
    Assignee: Sony Corporation
    Inventors: Kensaku Wakuda, Shinji Kobayashi, Akio Tanaka, Shunsuke Miura, Yoshinobu Kure
  • Patent number: 8611233
    Abstract: A system and method in accordance with exemplary embodiments may receive, from a management system, configuration data associated with a management protocol. In addition, the system and method may generate test data traffic at least based on the configuration data. Further, the system and method may transmit, to one or more network elements, the test data traffic. Even further, the system and method may receive, from the management system, a query associated with the management protocol that requests data traffic information associated with at least one of the generated test data traffic, transmitted test data traffic, and received test data traffic. The system and method may transmit, to the management system, the requested data traffic information in response to the query.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: December 17, 2013
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Adam M. Davis, Syed A. Ahmad
  • Patent number: 8593975
    Abstract: Provided is a method and apparatus for objectively and non-intrusively measuring voice quality on live calls without disrupting the call session or the network. A communication system includes plural communities each including a switch that controls access to a packet-based data network for call sessions. Each of the communities is coupled to the data network by respective packet-based trunks. Quality of service (QoS) monitoring devices are coupled to the respective packet-based trunks to monitor quality levels of routes between any two given communities. Each QoS monitoring device receives packets containing streaming data (which may be actual packets or test packets). From the received packets, the QoS monitoring device can derive QoS parameters, particularly for audio and speech signals on live calls without disrupting the call session.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: November 26, 2013
    Assignee: Rockstar Consortium US LP
    Inventors: Mohamed S. El-Hennawey, Ick Don Lee
  • Patent number: 8594714
    Abstract: A method for processing a media request in a multimedia communication process is provided, including: adjusting, by a multimedia application server, a media request queue according to information contained in a media request message or a media request cancellation message received from a first client; determining all the media requests of which positions in the media request queue are changed due to the adjustment; and sending, to one or more clients corresponding to the media requests of which positions in the media request queue are changed, media request queue position status messages to notify the clients corresponding to the media requests of which positions in the media request queue are changed of updated position status of the media requests. A device for processing a media request in a multimedia communication process is also provided. The demands of various multimedia communication services such as the PoC service can be satisfied well.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: November 26, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Yajuan Wu
  • Patent number: 8588082
    Abstract: There is disclosed a system and method for implementing a control plane/data plane test to evaluate the performance of a device under test upon the occurrence of a critical event. The method may be performed by a network testing system.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: November 19, 2013
    Assignee: Ixia
    Inventors: Noah Gintis, Alok Srivastava, Victor Alston, Dean Lee
  • Patent number: 8582446
    Abstract: A method and system for responding to changes in the system. The system includes two or more routers which are electrically connected together in a network tree structure. Each router includes an electronic connection port and a routing table. A direct current balance exists at the electronic connection port of each route. A change in the direct current balance at the electronic connection port of at least one router of the two or more routers is detected. An occurrence of changes in the system that relate to each router of the at least one router is ascertained from the detecting. Responsive to the ascertaining, a new routing table is generated for each router of the at least one router. Each new table includes the changes in the system that relate to each route of the at least one router.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: November 12, 2013
    Assignee: International Business Machines Corporation
    Inventors: Oliver Keren Ban, Shu-Chen Lim, YongGuo Luo, Jibao Wang
  • Publication number: 20130294260
    Abstract: A method for providing a status to a plurality of devices in a distributed VoIP system includes circulating a first status data packet between each device in the first group of devices and circulating a second status data packet between each device in the second group of devices. One device in the first group of devices participates in circulating both the first status data packet and the second status data packet, while the other devices in the first group of devices circulate only the first status data packet. One device in the second group of devices participates in circulating both the first status data packet and the second status data packet, while the other devices in the second group of devices circulate only the second status data packet.
    Type: Application
    Filed: June 24, 2013
    Publication date: November 7, 2013
    Inventors: Nam Do, Vu Hwang
  • Patent number: 8565098
    Abstract: A method, device, and system for traffic switching in Multi-Protocol Label Switching Traffic Engineering (MPLS TE) are disclosed. The method includes: transmitting traffic over a standby Label Switching Path (LSP) after detecting fault of an active LSP; detecting that the forwarding entry on the active LSP is delivered completely after the fault of the active LSP is rectified; and switching the traffic to the active LSP, and transmitting the traffic over the active LSP. The present invention ensures that the forwarding entry on the active LSP is delivered completely, and prevents packet loss and traffic loss in the case of switching the traffic back from the standby LSP to the active LSP, thus improving the user experience and enhancing the network availability and stability.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: October 22, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jun Liu, Yanjun Liu
  • Patent number: 8560026
    Abstract: Disclosed are devices and methods of a communication device including initiating an initial communication via a modem in response to a data pull communication event or a data push communication event and determining by the controller a measured network condition associated with transmitting the initial communication as well as determining by the controller the power consumption of the initial communication based on a measured network condition value processed by monitoring the modem. Methods of a communication device further include comparing the power consumption value with a predetermined power consumption value stored in the memory related to a predetermined acceptable measured network condition value for this type of communication event, and terminating by the controller, the communication when the power consumption value exceeds the predetermined power consumption value based upon the acceptable measured network condition value for this type of communication event.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: October 15, 2013
    Assignee: Motorola Mobility LLC
    Inventor: Cyril M De La Cropte De Chanterac
  • Publication number: 20130265886
    Abstract: A method of packet processing, includes: providing a plurality of network appliances that form a cluster, wherein two or more of the plurality of network appliances in the cluster are located at different geographical locations, are communicatively coupled via a private network or an Internet, and are configured to collectively perform out-of-band packet processing; receiving a packet by one of the network appliances in the cluster; processing the packet using two or more of the plurality of the appliances in the cluster; and passing the packet to one or more network monitoring tools after the packet is processed.
    Type: Application
    Filed: September 28, 2012
    Publication date: October 10, 2013
    Inventors: Patrick Pak Tak LEONG, Paul Andrew HOOPER
  • Patent number: 8555325
    Abstract: Systems, methods and apparatus are described for testing a data connection provided over a power supply line. A testing apparatus is coupled to a socket of the power supply line. The AC power supply line communicatively couples the testing apparatus to a communication device or another testing apparatus. The testing apparatus identifies the signal strengths of signals received by the testing apparatus and identifies the signal strengths of signals received by the communication device. The testing apparatus outputs an indicator of the first signal strength and the second signal strength to a user and this information may be utilized to detect noise or other problems in the data connection provided over the AC power supply line.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: October 8, 2013
    Assignee: EchoStar Technologies L.L.C.
    Inventors: Anthony Kozlowski, David Belt, Benjamin Cooke
  • Patent number: 8554952
    Abstract: Efficient and highly-scalable network solutions are provided that each utilize deployment units based on Clos networks, but in an environment such as a data center of Internet Protocol-based network. Each of the deployment units can include multiple stages of devices, where connections between devices are only made between stages and the deployment units are highly connected. In some embodiments, the level of connectivity between two stages can be reduced, providing available connections to add edge switches and additional host connections while keeping the same number of between-tier connections. In some embodiments, where deployment units (or other network groups) can be used at different levels to connect other deployment units, the edges of the deployment units can be fused to reduce the number of devices per host connection.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: October 8, 2013
    Assignee: Amazon Technologies, Inc.
    Inventors: Jagwinder Signh Brar, Michael David Marr, Tyson J. Lamoreaux, Mark N. Kelly, Justin O. Pietsch
  • Patent number: 8554271
    Abstract: A mobile communication device (102) includes both a wide area network (WAN) radio modem (122), and a personal area network (PAN) radio modem (134), which operate on similar frequencies. When the both the WAN and PAN modems are operating and carrying time-sensitive data, the WAN modem disables transmission by the PAN modem when the WAN modem is due to receive data from a WAN base station (406), including neighbor scans. The duration and frequency of disabling the PAN modem is controlled so that the retransmission is successful.
    Type: Grant
    Filed: June 30, 2007
    Date of Patent: October 8, 2013
    Assignee: Motorola Mobility LLC
    Inventors: Huai Y. Wang, Zaffer S. Merchant, Floyd D. Simpson
  • Publication number: 20130259465
    Abstract: The present disclosure provides hybrid packet-optical private network systems and methods for a private and dedicated multi-point Ethernet Private Local Area Network (EPLAN). The network systems and methods include a Layer 1 infrastructure service with the inclusion of reserved, dedicated packet switch capacity upon which clients can build their personal, private packet networks. In the systems and methods described herein, packet networking methods are not used to partition the isolated LAN connectivity. Instead, dedicated Ethernet Private LANs (EPLs) are defined between dedicated virtual switching instances (VSIs) that are defined, as necessary, within larger packet-optical switches. Each VSI is partitioned from the remainder of its packet switch fabric as a dedicated, private resource for a specific EPLAN. A packet network is then built by the customer on top of the private EPLAN bandwidth and operated as an isolated, private network with no influence by other carrier's network resources.
    Type: Application
    Filed: May 20, 2013
    Publication date: October 3, 2013
    Applicant: CIENA CORPORATION
    Inventor: Loudon T. Blair
  • Patent number: 8548767
    Abstract: The invention relates to a measuring device having at least one first assembly and at least one second assembly. The first assembly and the second assembly each comprise an intermediate frequency interface or a complex baseband interface. The intermediate frequency interfaces or baseband interfaces are designed as serial digital interfaces.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: October 1, 2013
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Gottfried Holzmann, Werner Mittermaier
  • Publication number: 20130250781
    Abstract: The present application relates to a signal combining apparatus (12) having an input for receiving a signal from a signal generator (14) and an output for outputting a signal to a signal analyser (16). The input signal is split into a plurality of identical signals by a high isolation splitter (20) and the plurality of signals are transmitted via a plurality of transmit paths (22), which can be selectively enabled or disabled, to inputs a plurality of duplex combiners (24), each of which has an input/output port to which a device under test (18) can be connected. Outputs of the plurality of duplex combiners (24) are connected to a plurality of receive paths (26), which can be selectively enabled and disabled, whose outputs are connected to a signal relay (28) which is operative to receive one or more signals received through the plurality of receive paths (26).
    Type: Application
    Filed: March 7, 2013
    Publication date: September 26, 2013
    Applicant: AEROFLEX LIMITED
    Inventor: David Gilmartin
  • Publication number: 20130242760
    Abstract: An apparatus for identifying interconnections in a network. The apparatus comprises a plurality of transmitter coupling units, a plurality of receiver coupling units, and an interconnection identification means configured to identify interconnections between the transmitter coupling units and the receiver coupling units by cable lines in the network. In some embodiments, the interconnection identification means is configured to, if any one of the transmitter coupling units is coupled to the same cable line as a selected one of the receiver coupling units, identify the interconnection between the transmitter coupling unit and the selected receiver coupling unit according to by a binary tree search algorithm.
    Type: Application
    Filed: November 3, 2011
    Publication date: September 19, 2013
    Applicant: CABLE SENSE LIMITED
    Inventors: Anthony Peyton, John Kelly
  • Publication number: 20130243423
    Abstract: A new and improved Ethernet hub for providing visibility of data packet traffic in an Ethernet network is disclosed. The Ethernet hub includes a packet buffer being coupled with a plurality of network ports to enable full duplex data packet communications among connected network stations.
    Type: Application
    Filed: July 25, 2012
    Publication date: September 19, 2013
    Inventor: Ziqiang He
  • Publication number: 20130235736
    Abstract: According to one aspect, the subject matter described herein includes a method for testing a Diameter routing node. The method occurs a Diameter routing node. The method includes receiving, from a Diameter message generation module and via a test connection, a first Diameter message. The method also includes modifying the first Diameter message to include a test indicator parameter indicating the first Diameter message is a test message. The method further includes processing the first Diameter message. The method also includes directing the first Diameter message to an egress message manager.
    Type: Application
    Filed: October 24, 2012
    Publication date: September 12, 2013
    Applicant: Tekelec, Inc.
    Inventors: Seetharaman Khadri, Srikanth Nanjund Rao, Peter J. Marsico
  • Publication number: 20130235735
    Abstract: A distributed fabric system has distributed line card (DLC) chassis and scaled-out fabric coupler (SFC) chassis. Each DLC chassis includes a network processor and fabric ports. Each network processor of each DLC chassis includes a fabric interface in communication with the DLC fabric ports of that DLC chassis. Each SFC chassis includes a fabric element and fabric ports. A communication link connects each SFC fabric port to one DLC fabric port. Each communication link includes cell-carrying lanes. Each fabric element of each SFC chassis collects per-lane statistics for each SFC fabric port of that SFC chassis. Each SFC chassis includes program code that obtains the per-lane statistics collected by the fabric element chip of that SFC chassis. A network element includes program code that gathers the per-lane statistics collected by each fabric element of each SFC chassis and integrates the statistics into a topology of the entire distributed fabric system.
    Type: Application
    Filed: March 7, 2012
    Publication date: September 12, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Sushma Anantharam, Nirapada Ghosh, Keshav Govind Kamble, Dar-Ren Leu, Chandarani J. Mendon, Nilanjan Mukherjee, Vijoy Pandey, Nandakumar Peethambaram