Abstract: Techniques are described for providing managed virtual computer networks that have a configured logical network topology with virtual networking devices, such as by a network-accessible configurable network service, with corresponding networking functionality provided for communications between multiple computing nodes of the virtual computer network by emulating functionality that would be provided by the virtual networking devices if they were physically present.

Abstract: Techniques for using instant messaging preferences and settings are used for predictive communications, including routing of data traffic, are provided. A voice call can be routed over a packet-based network if a voice network is not available, or for other reasons. In addition to voice calls, embodiments of the invention can route video calls, multimedia communications and other communications. In some implementations, an instant message presence can be queried for in determining how to route a voice-over-IP or PSTN telephone call. Thus, a call might be routed to a computer or computing device unrelated to the location of the PSTN telephone line being called, if an associated instant messenger presence is detected on that computer or computing device.

Abstract: A computer program product, an apparatus, and a method for processing communications between a target and an initiator an input/output processing system are provided. The computer program product includes a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method. The method includes: sending a message from the initiator to the target, the message requesting suspension of input/output operations between the initiator and the target for a period of time, the period of time being defined by the message; responsive to the message, suspending input/output operation messages for the period of time; performing a system change comprising at least one of: at least one update, a computer program installation, a recovery, and a change in operating parameters; and initiating new input/output operations after at least one of: expiration of the period of time and initiation of new input/output operations by the initiator.

Abstract: An apparatus and method for a Generic Service locking mechanism that enables a Host to lock the Fibre Channel Switching Fabric of a storage area network while applying changes across the Switching Fabric of the network is disclosed. The apparatus includes a network interface configured to send and receive Fibre Channel frames across the Fabric, a session element, responsive to the network interface, and configured to establish sessions with the Fabric; and a locking element configured issue commands to establish a lock over the Fabric so that replicated information across the Fabric can be consistently updated when the session element establishes a session with the Fabric. In one embodiment of the invention, the network interface, session element and the locking element are all implemented on each Switch of the Fabric.

Abstract: A multi-port memory, comprising: a memory array made of a plurality of memory cells arranged at intersection points between a plurality of bit lines and a plurality of word lines, the memory array being divided into n (an integer of 2 or greater) memory banks; m (an integer of 2 or greater) input/output ports, each independently performing input and output of a command, an address, data to and from each of the memory banks; and a route switching circuit that sets signal for the command, address, and data between the memory banks and the input/output ports, the route switching circuit controlling a connection state of signal lines between the plurality of input/output ports and the plurality of memory banks.

Abstract: In some embodiments, an apparatus includes a compute device to communicate with a network control entity at each access switch from a set of access switches that define a portion of a data plane having a switch fabric coupling as hierarchical peers each access switch from the set of access switches. The compute device is operable to define a portion of a control plane that includes the network control entities from the set of access switches such that the compute device is hierarchically removed from the network control entities from the set of access switches. The compute device is operable to receive forwarding-state information from a first access switch from the set of access switches. The compute device to send the forwarding-state information to a second access switch from the set of access switches.

Abstract: A method, system, and computer program product for implementing a standardized interpretive engine is provided. The method includes externalizing at least one of a business and a user requirement into a component class of a data control structure. The method also includes defining a solution to the business and user requirement and entering the solution into metadata within the component class. The method further includes pulling data from a data warehouse into the component class based upon the business and user requirement. The method also includes performing a calculation on the data in accordance with the business and a user requirement.

Abstract: A system and method for extending the implementation of one or more Intrusion Prevention Systems (IPSs) such that each user can be placed in the IPS traffic path to create secure containment areas at a granular level, port types and port counts are increased, and higher network connection speeds are supported. In different embodiments of the invention, traffic load is balanced across two or more IPSs, enabling enhanced availability during system failures, replacements or updates. IPS performance is improved by enhancing traffic management of “trusted” (e.g., pass-through) and “known bad” (e.g., discarded) traffic flows and decreasing configuration task workloads. Other embodiments of the invention include, but are not limited to, extending the implementation of proxy devices, virtual private networks (VPNs), session border controllers (SBCs), firewalls, protocol gateways and other bump-in-the-wire systems.

Abstract: A method and apparatus are described herein for configuring at least one port in a switch to be an upstream port or a downstream port based, at least in part, on a control signal. If a component includes both a switch and an endpoint, the method and apparatus support configuration of the endpoint to either couple to an upstream port or to a downstream port. In one embodiment, this method and apparatus are used with PCI Express interconnects.

Abstract: An access network discovery and selection (ANDSF) module includes a first transceiver that receives an service continuity signal from a service centralization and continuity application server (SCC AS). A first control module generates a preference and policy information signal based on the service continuity signal. The preference and policy information signal includes a list of access networks available for selection by a service request device (SRD). The first transceiver transmits the preference and policy information signal from the ANDSF module to the SRD.

Abstract: A scaling device or striper improves the lane efficiency of switch fabric. The striper controls or adjusts transfer modes and payload sizes of a large variety of devices operating with different protocols. The striper interfaces between network devices and the switch fabric, and the resulting switching system is configurable by a single controller. A source device sends a data packet to its corresponding striper for transmission across the switch fabric to a destination device. The corresponding striper parses the packet to determine its type and payload length, and divides the packet into numerous smaller segments when the payload length exceeds a predetermined length. The segments may be stored in the striper to adapt to the available bandwidth of the switch. The segments are sent across the switch fabric and reassembled at a destination striper. The packet as reassembled is forwarded to the destination device.

Abstract: A network unit for use in a switching fabric includes multiple units collectively constituting a single network entity, each having ports for the reception and forwarding of data packets. The network unit has at least one fabric port for connection to a partner port on another one of the units by at least one link. The network unit is organized to send and receive via the at least one fabric port protocol packets which contain information on the path costs between said units in the fabric and to perform an algorithm to determine, on the basis of said information, routes for data packets within the fabric to other units of the fabric.

Abstract: The present invention discloses an active and standby switching interface module, a network element system and a method for synchronizing and detecting link information. In the scheme of the present invention, the standby switching function interface module sends a synchronization detection request message to a synchronization module, and performs synchronization processing on the link information on the standby switching function interface module according to a synchronization detection reply message from the synchronization module, wherein the synchronization detection reply message encapsulates the link information on the active switching function interface module.

Abstract: A system that incorporates teachings of the present disclosure may include, for example, a server having a controller to transmit a tracking request to a session information retriever for a targeted user of a network with the session information retriever storing session information for users of the network and with the tracking request having identification information associated with the targeted user, transmit a query to the session information retriever for relevant session information associated with the targeted user with the relevant session information being selected by the session information retriever from the session information based at least in part on the identification information associated with the targeted user and with the relevant session information being stored in a single file associated with the targeted user, and receive at least a portion of the relevant session information transmitted from the session information retriever. Other embodiments are disclosed.

Abstract: A Queue Manager (QM) system and method are provided for communicating control messages between processors. The method accepts control messages from a source processor addressed to a destination processor. The control messages are loaded in a first-in first-out (FIFO) queue associated with the destination processor. Then, the method serially supplies loaded control messages to the destination processor from the queue. The messages may be accepted from a plurality of source processors addressed to the same destination processor. The control messages are added to the queue in the order in which they are received. In one aspect, a plurality of parallel FIFO queues may be established that are associated with the same destination processor. Then, the method differentiates the control messages into the parallel FIFO queues and supplies control messages from the parallel FIFO queues in an order responsive to criteria such as queue ranking, weighting, or shaping.

Abstract: An address of a terminal on a network is fixed during the session. The present invention provides an electronic apparatus that can be connected to a network, including, a communication unit communicating with another electronic apparatus existing on the network, a temporary-address setting unit setting a temporary address that is temporarily valid on the network, an address-requesting unit requesting that an address management apparatus connected to the network should set an address at a predetermined timing, when the temporary address is set, and an address-request stopping unit inhibiting the address-requesting unit from operating, while the communication unit is communicating with the other electronic apparatus, by using the temporary address.

Abstract: Apparatuses, systems, methods, algorithms, and software for distributed control and/or configuration of network switching devices. The apparatus generally comprises a plurality of network I/O ports, a local control I/O port, and a controller configured to, when the apparatus is a master, receive control input data from at least one of the network I/O ports, process the control input data, and provide control output data to at least one of the network I/O ports, and when the apparatus is a slave, receive the control input data from the local control I/O port, provide the control input data to at least one of the network I/O ports, receive the control output data from at least one of the network I/O ports, and provide the control output data to the local control I/O port. The present disclosure advantageously enables control and/or configuration of a stack of network switch devices by communicating through a local control port of at least one of the devices in the stack.

Abstract: The present invention provides a method for processing a switch control command for solving the problem that consistency of data of the network device and the network management is unable to be kept in the process of processing the switch control command in the prior art. This method includes: when a priority of obtained trigger information is higher than a priority of a switch control command, discarding the switch control command (103); and reporting the discarded switch control command to a control system which manages the network device (104). The present invention further provides an device for processing a switch control command.

Abstract: A call processing method and system in which the use of the MGW between the RNC and the peer party is limited to only certain situations. This invention uses RFC 3267 (AMR/IETF) on the RNC. This will avoid inserting a MGW context for framing conversion only. This invention provides an optimization that sets up calls from the RNC, thus avoiding the need for a MGW in the path for basic calls. With this optimization, the usage of DSP and packet resources and the number of MGW chassis, as well as bearer path delay, are all reduced.

Abstract: A method and apparatus are provided for horizontally slicing a multi-stage switching fabric having transmission inputs and transmission outputs to and from the switch fabric. The switching fabric includes switch elements arranged in at least first and second stages, each switch element having element inputs and outputs with each switch element being configured to join one of the element inputs with an associated one of the element outputs. The switch fabric includes a first logic device that contains a stage-1 subset of the switch elements that is arranged within, and configured to operate as part of, the first stage. The first logic device also contains a stage-2 subset of the switch elements arranged within, and configured to operate as part of, the second stage. The switch fabric includes a second logic device that contains a stage-1 subset of the switch elements that is arranged within, and configured to operate as part of, the first stage.

Abstract: Disclosed herewith is a multi-plane cell switch fabric system in which each switching unit functions asynchronously with others. The system executes distribution/restoration operations without lowering the switching capacity to reorder cells that arrive in random order from a plurality of switches just as they were in original flows and packets respectively with a small hardware capacity. In the system, the distribution unit divides each variable length packet addressed to the same destination into fixed length cells and sends those divided cells by a unit of integer multiple of the number of switches. On the other hand, the reordering unit, while holding cells that arrive in random order from each switching unit (switching units 1 to M) in a receive buffer, separates only the header information from each cell and holds the header information in a retry queue.

Abstract: Images and video can be produced by compositing or alpha blending a group of image layers or video layers. Increasing resolution or the number of layers results in increased computational demands. As such, the available computational resources limit the images and videos that can be produced. A computational architecture in which the image layers are packetized and streamed through processors can be easily scaled so to handle many image layers and high resolutions. The image layers are packetized to produce packet streams. The packets in the streams are received, placed in queues, and processed. For alpha blending, ingress queues receive the packetized image layers which are then z sorted and sent to egress queues. The egress queue packets are alpha blended to produce an output image or video.

Abstract: A computer-implemented method for selectively enabling and disabling at least one of a plurality of functions of a host operating system and for selectively enabling and disabling at least one of a plurality of host components includes the following steps: activating a locking mechanism in the host system for disabling system access, wherein the locking mechanism includes switches and component control storage; activating component settings for selectively enabling and disabling components of the system, wherein the component settings are controlled by manipulating the switches; activating system settings for selectively enabling and disabling functions of the system, wherein the system settings are controlled by manipulating the switches; activating system passwords, component passwords and encryption keys; and locking the system according to the selected settings.

Abstract: A microprocessor and a DSP are coupled with a cable modem and an IAD framer to terminate a DS1 link at a media terminal device. The processor performs call control operations and the DSP performs signal processing, such that call processing occurs at the device. The framer extracts or inserts call control information from robbed-bit signaling bits. Data streams from the DS1 link are formatted/packetized according to a protocol used by a VoIP network. VoIP is used to transmit the packetized call from the cable modem portion to a CMTS over a broadband network. QoS attributes are implemented on the derived data streams as would be done for calls generated by a standard PacketCable EMTA.

Abstract: A multi-plane cell switch fabric system prevents a decrease of the effective switching capacity when switching the variable-length packets. Distribution units classify input variable-length packets for each address, arranges the packets by a first division length unit, divides the packets into fixed-length cell payloads by a second division length unit that is an integer multiple being twice or more as large as the first division length unit, and forms a fixed-length cell by providing destination information, a source ID, a sequential number, and packet head tail information to each of the cell payloads. The cells are distributed to all the switching units one by one whenever the cells are collected to be the same number as the plural switching units. The reordering units classify the cells, reorder the sequential number in an original order, and reassemble the packets by the packet head tail information of the cell.

Abstract: In a MIMO wireless transceiver, priority control that judges priority of transmit data and a transmission mode table are provided to control an option as to which transmission system SDM or STBC is selected, coding rate and modulation method based on a transmission mode for a transmission destination that is determined by priority of transmission data and status of a communication matrix at the time of data transmission. With such arrangement, a wireless communication system composed of the MIMO wireless transceiver can control coding, MIMO signal processing and modulation methods according to priority of transmit data. More specifically, it is possible to ensure transmission of data having higher priority and improve throughput in total when a plurality of types of data are transmitted.

Abstract: Methods and apparatus in a wireless device for use in maintaining appropriate authentication credentials for receiving a message service provided by a service network which is external to a wireless network are described. The wireless device receives, via the wireless network, a data session configuration file which includes a list of a plurality of wireless networks mapped against authentication credentials associated with each said wireless network. The list includes authentication credentials associated with the wireless network. The wireless device submits, via the wireless network, the authentication credentials for establishing a data session via the wireless network. Then, the wireless device receives, in the data session via the wireless network, the message service provided by the service network.

Abstract: A method of routing telephone calls is disclosed that includes receiving Voice over Internet Protocol (VoIP) packets at an integrated access device (IAD) from a VoIP remote worker feature server. The IAD communicates with a first private branch exchange (PBX) located at a first location. The VoIP packets are related to a VoIP call intended for a telephone number assigned by a second PBX at a second location.

Abstract: A system delivers data and includes a plurality of data storage devices. A plurality of servers such as video servers are connected to the plurality of data storage devices and access the data storage devices to provide streaming data to a plurality of clients upon request therefrom. Upon failure of one of the servers, the load on the remaining servers is distributed equally among remaining servers using a distribution algorithm that assigns dual client network connections to server groupings such that the failure of any one server will increase the client load on any remaining server by no more than ceil (C/P) loads, where C is the total number of configured clients that access the plurality of servers in the system and P is the total number of server pairs.

Abstract: A method for controlling a first interface and a second interface installed on a mobile node is provided, wherein the mobile node communicates with a first access network (AN) through the first interface and communicates with a second AN through the second interface. The method comprises following steps. A first IP address is acquired through the first interface and the first AN for accessing a service network (SN). A second IP address is acquired through the second interface and the second AN for accessing the SN. The first interface is then selected as an awake interface. The second bridging node is directed to create and cache binding information indicating a binding of the second IP address to the first IP address. The second interface is turned off after the binding information is successfully created and cached on the second bridging node.

Abstract: Switching between communication ports of a notebook is typically accomplished using an off-chip local area network (LAN) switch or an off-chip high speed analog multiplexer. This off-chip component is disadvantageous for several reasons, including: added cost of an additional component; increased overall power consumption because transmit amplitude loss; and reduced cable reach and link performance due to hybrid mismatch and signal distortions. To reduce cost and preserve electrical and networking performance, an integrated switch is provided to multiplex signals of a networking communication chip to multiple network paths.

Abstract: A plurality of inputs are configured to receive circuit switched traffic from a plurality of initiators. A plurality of outputs are configured to output said traffic to a network on chip. Each output is associated with a different quality of service traffic. A traffic controller directs the received circuit switched traffic to respective ones of the outputs in dependence on a quality of service associated with the traffic.

Abstract: A system for mirroring dropped packets by extending port mirroring. Networking devices, such as firewalls and routers drop some packets during data transmission due to various security issues, congestion and errors in the packets. The dropped packets are mirrored at a user-specified destination port by extending port mirroring. The mirrored packets can then be further analyzed by external traffic analyzers. The analysis can be helpful in finding out any mismatch between firewall rules and security policies at firewalls. Moreover, the analysis can also be helpful in finding out the extent of loss of useful data in dropped packets at forwarding devices such as routers, bridges, switches, firewalls etc.

Abstract: A system and method of controlling data flow may take into account an egress port flow control configuration as well as an original ingress port flow control configuration. A queue controller may execute a flow control algorithm or a quality of service algorithm responsive to the flow control modes at either or both of the original ingress port and the egress port.

Abstract: Methods and apparatus for use by a mobile communication device in facilitating voice calls through a wireless local area network (WLAN) and a wireless wide area network (WWAN) are disclosed. When switching communication operations from a WLAN coverage region of the WLAN to a WWAN coverage region of the WWAN, the mobile device causes a message for forwarding voice calls to a WWAN identification number of the mobile device to be transmitted through the WLAN. The mobile device subsequently causes a message for cancelling the forwarding of voice calls to a WLAN identification number of the mobile device to be transmitted through the WWAN. When switching communication operations from the WWAN coverage region of the WWAN to the WLAN coverage region of the WLAN, the mobile device causes a message for forwarding voice calls to the WLAN identification number of the mobile device to be transmitted through the WWAN.

Abstract: A CPU of an image forming apparatus controls, according to establishment of a sleep change condition, a MAC/PHY in a network unit to change the image forming apparatus from a link-up state to a link-down state. The CPU controls the image forming apparatus to change from a normal mode to a deep sleep mode. A CPU of the network unit controls, according to the change of the image forming apparatus from the normal mode to the deep sleep mode, the MAC/PHY to change the link-down state of the image forming apparatus to the link-up state. The CPU controls the MAC/PHY to transmit a MAC address necessary for causing the image forming apparatus to participate in VLAN to a switching hub.

Abstract: Aspects of a method and system for utilizing a 10/100/1G/10GBase-T PHY device for single channel and shared channel networks are provided. In this regard, at least one switching element may be utilized to configure an Ethernet over twisted pair PHY device for communication over a single and/or shared channel. The switching element may enable switching between a transmitter being coupled to a shared channel and a receiver being coupled to a shared channel. Additionally, the switching elements may be based on whether the transmitter is connected to a standard 10/100/1G/10GBase-T network, or to a single and/or shared channel network, for example. In this manner, the configured PHY device may remain compatible with existing Ethernet networks. The PHY device may be configured externally and/or internally. The polarity of transmitted and/or received data may be configured based on a polarity of data received from a shared channel.

Abstract: For each broadcast control channel of a plurality of broadcast control channels associated with a plurality of wireless networks, a mobile device decodes control information on the broadcast control channel and stores this control information in its memory. The control information includes a network identification which uniquely identifies a particular wireless communication network. Such decoding is performed in between or during repeated acts of measuring signal strength levels of an RF signal on the broadcast control channel, and prior to completion of an averaging function for calculating an averaged signal strength level of the signal strength levels on the broadcast control channel. Decoding may be performed only for those broadcast control channels identified to have the most optimal signal strengths.

Abstract: A high capacity network comprises a plurality of edge nodes with asymmetrical connections to a plurality of switch planes, each switch plane comprising fully meshed fast-switching optical switch units. Upstream wavelength channels from each source edge node connect to different switch planes in a manner which ensures that upstream wavelength channels from any two edge nodes connect to a common switch unit in at most a predefined number, preferably one, of switch planes. Thus, switch units in different switch planes connect to upstream channels from orthogonal subsets of source edge nodes. In contrast, downstream wavelength channels from a switch unit in each switch plane connect to one set of sink edge nodes. In an alternate arrangement, the upstream and downstream asymmetry may be reversed.

Abstract: Provided is an apparatus and method for providing a voice service without discontinuance in a mobile communication system. The apparatus includes a controller for receiving a system information block of a first network system or a system information block of a second network system from an interface module, and transmitting a network selection change request to the interface module to change a network system mode; and a network selector for, when the system information block of the first network system does not comprise voice switched domain information for location area update, driving a timer according to a selection of a user, changing the network system mode into the second network system, and executing location area update to thereby provide the voice service.

Abstract: The present invention relates to systems and methods for eliminating unnecessary link state database exchanges and processes when two OSPF routers are forming a full adjacency. In particular, the invention provides methods and mechanisms for deducing information about unreachable routers from link state changes received, recording the information about the unreachable routers for a given period of time, constructing a neighbor database summary list that does not contain the LSAs that the neighbor has through using the information about the unreachable routers and reachable routers, and determining whether the neighbor router is restarted after it becomes unreachable. In addition, the present invention provides a few of options to deduce and use the information about the unreachable routers and the information in the link state database for eliminating unnecessary link state database exchanges and processes.

Abstract: In some embodiments, a system includes a chassis having a group of horizontal slots in which a first group of line cards is disposed and a group of vertical slots in which a second group of line cards is disposed. Each port of a line card from the first group of line cards is operatively coupled to a different line card from the second group of line cards when the system is in a first configuration. A first set of ports and a second set of ports of a line card from the first group of line cards are operatively coupled to a first line card and a second line card from the second group of line cards, respectively, when the system is in a second configuration.

Abstract: Methods and systems are presented for implementing wireless number portability in a wireless communications network, in which an originating switching component determines whether a called number is ported or not based on profile information from a home location register without querying a number portability database.

Abstract: The present invention facilitates automatic discovery of VPN-related information, which relates to the existence or association of VPNs as supported by provider edge devices in a core network. In particular, the Border Gateway Protocol (BGP) is used to facilitate the automatic discovery, and the provider edge devices are capable of subsequently and automatically triggering Label Distribution Protocol (LDP) processes to facilitate signaling over LDP sessions within the core network.

Abstract: To guarantee continuation of communications of the level of the applications, and implement smooth and seamless switching between communication terminals that execute the service.

Abstract: A physical layer device comprises an interface that communicates with a media access control (MAC) device. A first circuit attempts to establish a first link using a first transceiver over a first medium. A second circuit attempts to establish a second link using a second transceiver over a second medium that is different than the first medium. A media selector communicates with the interface and the first and second circuits and that enables data flow from the first medium to the MAC device using the interface when the first link is established first. A preferred medium selector communicates with the media selector and is configurable in one of a plurality of medium preference states.

Abstract: Methods and apparatus for selectively routing traffic from a port in a switch for use in a chassis-based server are provided. The switch may include a flexible physical layer component, allowing traffic from a channel (e.g., an Ethernet channel) to be routed to a connector on a front panel of the switch or to switch cross-connect routing in a backplane of the server system. The routing may be selectable by a user, for example, under software control, allowing flexibility to the user to select the routing that best fits an application, while conserving resources by not requiring a dedicated channel for each routing data path.

Abstract: A packet processor having one or two or more packet processing units is provided with a packet detector which detects whether or not a packet exists in a packet processing unit, and outputs a packet detection signal indicating a result of the detection, and a clock frequency controller which controls a clock to be supplied to the packet processing unit based on the packet detection signal.

Abstract: A system for automatically verifying an incoming telephone number. In response to detecting an incoming communication, a determination is made as to whether a telephone number associated with the incoming communication matches one of a plurality of telephone numbers in a storage unit. In response to determining that the telephone number associated with the incoming communication does not match one of the plurality of telephone numbers in the storage unit, telephone number verification rules are applied to determine whether to continue with the incoming communication. In response to a determination not to continue with the incoming communication based on the telephone number verification rules, an alert is provided.

Abstract: The present invention is a telecommunications system having separate switch fabric and switch intelligence. The system comprises a switch fabric, a switch intelligence, and a feature processor. The switch intelligence is logically separated from the switch fabric and comprises a switch fabric proxy, a facility service, a connection manager service, and a call segment instance service. The switch fabric proxy is coupled to the switch fabric via a vendor-specific first Application Programming Interface (API). The switch fabric proxy supports a second API, which is common across all vendors, representing functions supported by the switch fabric. A facility instance, which is instantiated by a facility service using a facility model, represents the bearer and signaling facilities of a party to a call, and interacts with the switch fabric proxy via the second API to communicate with the switch fabric.