Abstract: Methods, apparatuses and systems directed to a network traffic classification mechanism that probes hosts against one or more network application profiles to facilitate identification of network applications corresponding to data flows traversing a network.

Abstract: Systems for in-band control that establish relationships between incoming data and one or more destinations to which the data is to be transmitted. In the in-band control embodiments described herein, a connection is established between two ends of a circuit by provisioning at one end of the circuit. A circuit connection table is kept at both ends of the circuit. This table contains the new and existing circuit connection information. A software process writes to the connection table at the local end of the circuit with the address information of the remote end of the circuit. The circuit connection information is to be periodically sent to the remote end to establish or tear down new connections.

Abstract: Backpressure information is communicated from a physical layer device to a link layer device in a communication system by generating a flow control message in the physical layer device responsive to a detected condition relating to at least a given one of a plurality of queues of the physical layer device, and transmitting the flow control message from the physical layer device to the link layer device. The flow control message may comprises backpressure information associated with a given egress queue of the physical layer device and is transmitted from the physical layer device to the link layer device as an in-band message over an interface between the physical layer device and the link layer device. Multiple-rate traffic shaping or other types of traffic shaping may be provided responsive to the flow control message.

Abstract: A packetized telecommunication network directs a call that is received at a gateway of the network to connect to a feature platform via the network, which performs a service related to the call, such as an authentication service. After the service is performed, the call is redirected to another location in the network to provide a connection between the gateway and the other location, which connection is independent of the feature platform.

Abstract: Aspects of the subject matter described herein relate to locally terminating an established connection. In aspects, a connection between two nodes is established. A network device lies on the path over which packets associated with the connection travel to get to either of the two nodes. After the connection is established, the network device attempts to create a safe point at which the connection can be terminated at the network device. To do so, the network device begins buffering packets and looking for information that indicates that all outstanding packets between the two nodes have been received either by one of the two nodes or have been buffered by the network device. After a safe point is reached, the network device may terminate the connection locally in a way that is transparent to the two nodes.

Abstract: A method for transmitting data from a participant device in a session in an Internet Protocol (IP) system (100) is provided. The method comprises sending (405) one or more a first Real-time Transport Protocol (RTP) packet of the session to a first address. The method further comprises sending (410) one or more a first Real-time Transport Control Protocol (RTCP) packet of the session to a second address. The participant device sends the one or more a first RTP packet and the one or more a first RTCP packet.

Abstract: An Internet Protocol (IP) multimedia subsystem for use in a telecommunication network. The IP multimedia subsystem comprises: 1) an IP switch for receiving Session Initiation Protocol (SIP) messages from an external IP network; and 2) a plurality of call application nodes capable of executing a plurality of service applications groups. The IP switch distributes the SIP messages to the plurality of call application nodes according to a load-sharing algorithm.

Abstract: A method and apparatus for configuring a network interface to support a virtual private network includes storing configuration data at a server on a host computer on the provider network. It is determined whether conditions are satisfied for sending the configuration data to a particular node at an edge of the provider network. If it is determined that conditions are satisfied, then the configuration data is sent to the particular node to cause the particular node to configure a particular interface for supporting a virtual private network over the provider network based on the configuration data without human intervention. The provider network is a packet-switched network and the particular virtual private network is a link layer virtual private network. The particular node is different from the host. The particular interface is for a direct communication link to a customer network node outside the provider network.

Abstract: In a particular embodiment, a disconnect message with a progress indicator may be received in a PSTN protocol at a gateway. The gateway determines if the disconnect message includes a progress indicator. The gateway then generates a SIP message with a reason indicator that indicates the SIP message is mapped from a disconnect message that includes the progress indicator. The SIP message is then sent to a second gateway. The second gateway determines that the SIP message should be interworked to a disconnect message. The second gateway uses the reason indicator in the SIP message to determine this. Accordingly, the second gateway sends a disconnect with progress indicator to a second PBX. This allows the second PBX the option to either listen to an in-band announcement or to disconnect without listening to the in-band announcement.

Abstract: A method for communicating messages in a multiple communication protocol network is disclosed. A first message is received at a first signaling adapter. The first message is based on a first communication protocol. A second message is received at a second signaling adapter. The second message is based on a second communication protocol. The first message is converted from the first communication protocol to a generic protocol, and the second message is converted from the second communication protocol to the generic protocol. The first message and the second message are received at a signaling adapter interface. The first signaling adapter and the second signaling adapter are detachable from the signaling adapter interface. The first message and the second message are sent to a network component.

Abstract: In a communication system, a communication session can be arranged by means of a node and a gateway. Control parameters are commonly signaled for the communication session from the node to the gateway. In the method the gateway is provided with information about the capabilities of the node. A decision in made if at least one of the control parameters for the communication session needs to be changed. If so, the new value of the at least one control parameter is determined based on information of the capabilities of the node. The node is then informed about the changed value of the least one control parameter. The communication session can then be controlled based on the changed value of the at least one control parameter.

Abstract: An Automatic Repeat request (ARQ) error correction method optimized for protecting real-time audio-video streams for transmission over packet-switched networks. Embodiments of this invention provide bandwidth-efficient and low-latency ARQ for both variable and constant bit-rate audio and video streams. Embodiments of this invention use timing constraints to limit ARQ latency and thereby facilitate the use of ARQ packet recovery for the transport of both constant bit rate and variable bit rate media streams.

Abstract: A method and apparatus for deep packet processing including a parsing and a searching method supported by a data structure storing the state-transition rules in the state-transition rule tables of a programmable state machine for parsing. The state-transition rule table is then compressed using the BaRT compression algorithm. Each transition rule comprises a test value, a test mask and a next state field. In a second embodiment the state-transition rule table is split into more than one state-transition rule table corresponding to disjoints state spaces, thus allowing more flexibility in the use of storage space. Finally a parsing and searching method can be implemented using the same hardware. The searching and parsing methods can be implemented alternatively or in any combination at wire-speed.

Abstract: According to various embodiments of the present invention, systems and methods for collecting, analyzing, and/or displaying signaling information for a call through a network, including: receiving a request for signaling information, wherein the request identifies a particular call handled by at least one network element within a voice over internet protocol network, querying the at least one network element for signaling information related to the particular call, and displaying the signaling information for the particular call. According to some embodiments of the present invention, systems and methods may further include storing signaling information on a network element, generating a call detail record based on the signaling information, wherein the call detail record identifies the network element and the particular call, sending the call detail record to a database, and searching the database based on the one or more criteria to identify the at least one network element.

Abstract: A system for Instant Messaging based control of the digital personal video stream manager (102), for example, to program a video recording device (114). The system includes a personal computer (110) having an Instant Messaging client (2202) and equipping the Instant Messaging client with a DPVSM control plug in (2204). The DPVSM control plug in (2204) is adapted to identify a special DPVSM control Instant Message (2301) which is then translated by the DPVSM control program (312). The digital personal video stream manager (102) then activates at the appropriate time to record the program.

Abstract: A distributed switching platform coupled to an Internet Protocol (IP) network and a method of operating the same. In one embodiment, the distributed switching platform includes a main control unit (MCU), coupled to the IP network, that generates call and control processing commands. The distributed switching platform also includes a switching partition coupled to the IP network. The switching partition includes an input-output distributor (IOD) and a circuit-switched matrix and line interface, coupled to the IOD, that provides an interface to a plurality of access nodes. The IOD conveys the call and control processing commands to the circuit-switched matrix and line interface to allow the circuit-switched matrix and line interface to control access to the plurality of access nodes.

Abstract: A RSVP node apparatus and interaction method thereof are provided. The method includes transmitting a first message to a neighboring node of a RSVP-based first node when the RSVP-based first node disables the RSVP HELLO mechanism. When the neighboring node receives the message, it sets a sign indicating that the first node has disabled the RSVP HELLO mechanism and maintains the LSP passing through the first node, according to the disabling status of the RSVP HELLO mechanism of the first node. Prior to transmitting the first message, the first node queries if the neighboring node has enabled the RSVP HELLO mechanism, and transmits the first message only to neighboring node which enables the RSVP HELLO mechanism.

Abstract: A Session Initiation Protocol (SIP) message adapted for use by a multi-media services provider system to form a multi-media communication path between at least a calling communication device adapted to operate using a first protocol (e.g. SIP) and at least a destination communication device adapted to operate using a second protocol, such as Integrated Services Digital Network User Part (ISUP). The SIP message includes a header region having a number of header fields, a first body region having Session Description Protocol (SDP) information related to the calling communication device and a second body region having ISUP related addressing information associated with the destination communication device.

Abstract: Packets or frames of data may be compressed, encrypted/decrypted, filtered, classified, searched or subjected to other deep-packet processing operations before being distributed through the internet. The microprocessor system and method of the present invention provide for the orderly processing of such data packets without disrupting or changing the sequence in which the data is intended to be transmitted to its destination. This is achieved by receiving frames into an input buffer for processing. Associated with this input buffer is a unit for determining the operation to be performed on each frame. An arbitrator assigns each frame to a processing core engine. An output buffer collects the processed frames, and a sequencer forwards the processed frames from the output buffer to their destination in the same order as received by the input/output buffer. Maintaining the sequence of data transmission is particularly useful in voice transmission, such as videos and movies.

Abstract: A method of providing IP telephony services maps a telephony signaling protocol called party number nature of address indicator to an Internet signaling protocol nature of address indicator and a telephony signaling protocol called party number numbering plan indicator to an Internet signaling protocol numbering plan indicator.

Abstract: A method of setting a timer value and a counter value depending on Radio Signal Strength (RSS) information according to a communication protocol is provided. In the method of determining the counter value and the timer value of a Mobile Station (MS) in a protocol negotiation process includes measuring a Round Trip Delay (RTD) and an RSS with respect to a counterpart MS, determining a timer value and a counter value according to the measured RTD and RSS, and exchanging a signaling message according to the determined timer value and counter value.

Abstract: A reference network node in a circuit-switched network obtains information about a partner network node by including a requesting element in a connection SETUP message sent to the partner network node. The partner network node responds with identification parameters included in response messages (for example, a CONNECT message). The reference network node uses the received identification parameters to send appropriate configuration information (for example, connection control of transmission links) to the partner network node.

Abstract: A control device (D) for a node (LCR3) in an Ethernet communications network having a GMPLS control plan and through which node a connection for setting up is to pass, includes control means (MC) arranged, in the event of said node (LCR3) receiving a connection setup message containing at least one first value representative of the sum since the beginning of the connection for setting up of the local values of an additive parameter as introduced in each of the preceding nodes (LCR3) in the connection, to determine a second value that is a function of the first value and of the local value as introduced by the node (LCR3), and then to compare the second value with a selected threshold so as to determine whether the connection can accept a maximum value for the additive parameter at the node, and to replace the first value in the received message with the second value as determined, at least when the connection can accept the maximum value.

Abstract: A method of initiating a call between users with reduced call set-up times using one or more telecommunication networks. The method is provided between at least a pair of H.324-like terminals coupled to the one or more telecommunication networks. The method includes providing one or more preferences for a call associated with a first terminal and a second terminal. The one or more preferences are associated with an initial mode of operation for the call between the first terminal and the second terminal. The method also includes processing the one or more preferences as a Custom Message, embedding the Custom Message in a predetermined field of a call initiation message, and transferring the Custom Message from the first terminal to the second terminal through a telecommunication network using call signaling.

Abstract: A Process for monitoring the quality of service of the communication over an Internet or intranet network, said process being executed in a end-user terminal and comprising the steps of: establishing a session between a first end-user terminal and a service or a second end-user terminal via a signaling plane; characterized in that it further comprises the steps of: monitoring the quality of service of the communication during said session; using said signaling plane for transmitting information representative of said quality of service during said session, whereby all parties share the same information. The process is well adapted to the known SIP protocol and allow the end-users of the network to share the same QoS information relating to the communication.

Abstract: The present invention is directed to the maintenance of call signaling information in connection with realtime communications established using a packet data network. According to the present invention, call state information related to a realtime communication is provided by a call controller to an interconnected client. The client stores the call state information. In the event of a failure of a call signaling channel between the call controller and the client or in the event of a failure of the call controller, the client may establish contact with an alternate call controller, and may provide the call state information that has been stored on the client to the alternate call controller. The alternate call controller may then restore call features associated with the realtime communication.

Abstract: The invention describes a method for transmitting a packet in a wireless network of nodes. At a beginning of a scheduled time slot a metric in the node is set, in which the metric indicates a need to transmit a packet to a receiver in the wireless network. The metric is mapped to a received power level and the packet is transmitted at a transmit power level so that the received power level is achieved at the receiver.

Abstract: A system for providing telecommunication service between users, includes a first network, a second network, a gateway. The first network is capable of communicating media in at least one encoding format. The second network is capable of communicating media in at least one format. In operation, the gateway receives a call setup message from the first network, the call setup message signaling for a media channel for transporting media between a first device and a second device. The gateway identifies a first encoding format for the media communicated with the first network. The gateway also determines a second encoding format for the media in the media channel communicated with the second network. If the first encoding format and the second encoding format are different, the gateway modifies transcoding information in the call setup message, the transcoding information indicating a number of transcoding points on the media channel.

Abstract: System and method for graphically representing and managing computer network connections are described. One embodiment is a method for providing an overlay filter in a computer capable of at least one secure network connection for use by at least one user application of the computer. The method comprises establishing a first secure network connection; launching a first application via the first secure network connection; and presenting on a display of the computer a visual representation, the visual representation illustrating that the first application is using the first secure network connection and comprising a first overlay area corresponding to the first secure network connection, wherein a first icon representing the first application is displayed within the first overlay area.

Abstract: In one embodiment, a service gateway decomposition method is described that is operable in an Internet Protocol (IP) Multimedia Subsystem (IMS) environment. A service gateway controller (SGC) is provided for effectuating a signaling interface with respect to at least one remote services server. One or more service gateways (SGWs) are provided for effectuating a message transport interface with respect to the remote services server, wherein the SGC and SGWs are interfaced together using a suitable signaling architecture.

Abstract: Methods of establishing multimedia telecommunication (a multimedia “call”) between equipment (“terminals”). More particularly, the invention provides methods for reducing the time required to establish calls between terminals implementing ITU-T Recommendation H.324 and derived or related standards or recommendations such as 3G-324M. More specifically, it relates to methods and apparatuses for (i) concatenating H.245 messages to pass between the terminals at the start of the call to establish the capabilities of both terminals and agree on the type and format of media and data to be exchanged (ii) using non-standard H.245 messages or standard H.245 messages with non-standard fields to accelerate establishment and (iii) informing each terminal of the capabilities of the other and proposing the type and format of media and data to be exchanged by means of fields inserted in the call signaling protocol used for bearer establishment prior to the H.324 stage of the call.

Abstract: A method for communication resource signaling including determining whether an event has taken place which indicates that communication resources being allocated to a communication terminal for a communication service are currently not needed by the communication terminal for the communication service; and sending a signaling message, if the event has taken place, to the communication terminal indicating that the communication resources continute to be allocated to the communication terminal for the communication service or that the communication resources are no longer allocated to the communication terminal for the communication service.

Abstract: A mobile communication control method includes: converting a first address of a destination mobile terminal which is included in a packet as a destination address, to a second address of the destination mobile terminal which is associated with the first address of the destination mobile terminal, in a source router; and converting the second address of the destination mobile terminal which is included in the received packet as a destination address, to the first address of the destination mobile terminal which is associated with the second address of the destination mobile terminal, in a destination router.

Abstract: A method for managing packet voice networks conforming to ITU Recommendation H.323, using a virtual entity approach and abstract information model approach, is disclosed. A virtual zone object represents an association of a virtual gateway, which comprises an H.323 gateway and a signaling controller, and one or more associated virtual gatekeepers, each of which comprises an H.323 gatekeeper, or the combination of an H.323 gatekeeper and a route server. User input specifies a configuration operation on the virtual zone and one or more parameter values. One or more configuration instructions are automatically issued to both the gateway and the gatekeeper, and other involved objects representing other involved network elements, resulting in configuring both the gateway and the gatekeeper as specified in the user input.

Abstract: The system and method herein for multiprotocol switching comprises multiprotocol switching cards, a user registration module and a billing module. The multiprotocol switching cards are used for switching at the system level, network level and application level. The multiprotocol switching cards are inserted in a plurality of slots. The services are installed in each card though installation of software programs. The user registration module registers the subscribers for different communication identifiers such as land line, wireless phones and devices, and email. The billing module supports the billing and payment activities across multiple communication protocols. The disclosed invention transfers data across different communication channels such as local area networks, wireless networks, satellite network, cable network, time division multiplexing networks, voice networks, and asynchronous transfer mode networks, frame networks, internet protocol networks, data networks, etc.

Abstract: The combination of narrowband applications with broadband transport may be enabled with a tri-level nodal communications architecture including a call control node having both switching intelligence and narrowband switching fabric, a plurality of connection control nodes having broadband switching fabric and an intermediate node for interworking between the call control node and the plurality of connection control nodes. The intermediate node includes a database providing an indication of which format(s) of multiple formats a given connection control node uses. When an incoming communication arrives to/from a specific connection control node, the database is consulted to ascertain the corresponding particular format(s) used by that specific connection control node. Accordingly, the incoming communication may be translated responsive to the ascertained particular format(s).

Abstract: A media gateway controller that includes an interface configured to receive a call request for a call from a communication device and transmit a control message for the call to the communication device. The media gateway controller also includes a processor configured to process the call request to determine an end point for the call, determine an end point state for the end point, and generate the control message indicating the end point state.

Abstract: In a method of detecting signaling information in a signal received in a wireless communication system, signaling information for a signal received in a subsequent time instant may be detected using an estimated value for the subsequent time instant. The estimated value for the subsequent time instant may be determined based on one or more measured parameters related to an estimated value for detecting signaling information in a current time instant.

Abstract: A resource allocation of multiple compressed AV streams delivered over the Internet is disclosed that achieves end-to-end optimal quality through a multimedia streaming TCP-friendly transport (MSTFP) protocol that adaptively estimates the network bandwidth while smoothing the sending rate. Resources allocated dynamically according to a media encoding distortion and network degradation algorithm. A scheme is also disclosed for dynamically estimating the available network bandwidth for streaming of objects, such as MPEG4 multiple video objects, in conjunction with the MSTFP protocol. The scheme can account for packet-loss rates to minimize end-to-end distortion for media delivery.

Abstract: A mobile radio network comprises a plurality of communication points, each of which are capable of communicating with any other communication point. Each communication point has a proximity sensor, a transmitter/receiver (14), which is able to send signals to and receive signals from the other communication points. Elements for controlling the transmitter/receiver and elements for storing data to identify the communication points is also described.

Abstract: One aspect of the invention provides an ingress apparatus comprising a signal processing apparatus for receiving an incoming data frame and locating the position of path overhead, and a monitoring apparatus arranged to extract information from the located path overhead. The ingress apparatus further includes an insertion apparatus for receiving, from the monitoring apparatus, information extracted from the path overhead of one or more signal path, and being further arranged to insert the extracted information into a respective data frame component which occupies a fixed position in a data frame. Thus, information which would normally occupy a non-fixed position in a data frame is moved to a fixed position. As a result, the information can subsequently be accessed without having to employ relatively complex apparatus for locating information which occupies a non-fixed position.

Abstract: In a communication system comprising first and second nodes, a transmit adaptive equalization technique is implemented. The first and second nodes may communicate over a Fiber Channel link or other medium. The first and second nodes comprise respective transmitter and receiver pairs, with the transmitter of the first node configured for communication with the receiver of the second node and the receiver of the first node configured for communication with the transmitter of the second node. The first node receiver is operative to receive from the second node transmitter, responsive to a signal transmitted by the first node transmitter to the second node receiver, information specifying an adjustment to one or more equalization parameters of the first node transmitter. The first node adjusts the equalization parameter(s) in accordance with the received information.

Abstract: Disclosed are a method, apparatus and system for interworking between H.320 or H.324 and SIP. The method comprises receiving a SIP message indicative of capabilities supported by a first endpoint device and deferring responding to the SIP message. The method further comprises receiving from a second endpoint device an H.320 or H.324 message indicative of the capabilities supported by the second endpoint device in response thereto responding to the SIP message thereby to establish a media communication channel between the first and second endpoint devices based on their respective capabilities.

Abstract: A method, system, and computer program product for controlling data packet traffic flow into a link partner device such as an ethernet adapter. In one embodiment, an occupancy level of an adapter receive queue is monitored to detect a receive queue overrun or underrun condition or event. The detected overrun or underrun condition or event is utilized as the criteria for adjusting a pause time value within a pause time flow control frame. The pause time flow control frame is transmitted from the link partner device to a corresponding remote link partner device to pause data packet transmission in accordance with the adjusted pause time value.

Abstract: A system and method which enables access points in a wireless ad-hoc communications network to effectively and efficiently determine the approximate location of a mobile node without performing a broadcast flood. The system and method enables a message to be efficiently communicated from an access point of the network, which provides access to a portion of the network or access to another network, to a wireless mobile node in the network. The system and method employ the operations of determining the access point with which the wireless mobile node is affiliated, storing information in a routing table at the affiliated access point pertaining to a routing path from the affiliated access point to the wireless mobile node, and updating the routing path when the wireless mobile node moves by a certain amount. The wireless mobile node can provide this routing path information to the affiliated access point in data packets sent to the affiliated access point.

Abstract: A topology aware system that facilitates activation of a new service in a dynamic network is provided. The system automatically determines changes in network topology and provides current topology information to determine an optimal service activation path for the new service. The optimal service path is determined by combination of shortest path using standardized algorithms over discovered adjacencies, logical roles assigned to devices and a service-hub for a particular UNI. The service hub is discovered automatically by employing current topology information determined by the system itself Thus, the system can activate a new service to a dynamic network without any manual topology feed.

Abstract: Aspects of a method and system for a low-complexity spanning tree algorithm in communication networks may comprise preventing loops in a communications network utilizing a distributed sequential algorithm in which there is a single token. Only a network node in possession of this single token may disable a network port. A spanning tree may be generated based on loop prevention. The network ports that may be disabled may be chosen from a port map, where the port map may be obtained by combining a port map identifying ports that are connected to loops with a port map indicating network ports that are to remain enabled. The loop prevention may be initiated by a root node and a token may be generated by the root node when completing the prevention. Network nodes may reduce ingress data rate during loop prevention.

Abstract: A packet-data network is made intelligent in the sense of a connection-oriented, switched telephony (COST) network by enhancing one or more interconnected IP routers in the network with computer-telephony integration (CTI) processors executing CTI applications. No-charge-to-calling-party IP addresses are assigned and sponsored by various enterprises, who may also maintain call centers having at least one CTI-enhanced IP router connected to the network, and agent stations having IP telephones connected to the call-center-located IP router. With appropriate software and the CTI link to IP routers the performance of well-known conventional telephone systems may be provided in packet networks like the Internet.

Abstract: When a node has to restart its control component, or a (e.g., label-switched path signaling) part of its control component, if that node can preserve its forwarding information across the restart, the effects of such restarts on label switched path(s) the include the restarting node are minimized. A node's ability to preserve forwarding information across a control component (part) restart is advertised. In the event of a restart, stale forwarding information can be used for an limited time before. The restarting node can use its forwarding information, as well as received label-path advertisements, to determine which of its labels should be associated with the path, for advertisement to its peers.

Abstract: A system for providing network access translation device traversal to facilitate communications is provided. The system includes a network access translation (NAT) device, a first Session Initiation Protocol (SIP) client located on the interior of the NAT device, a second SIP client located on the exterior of the NAT device, and a proxy server configured to maintain registration information relating to the first SIP client and the NAT device. The proxy server is further configured to allow the second SIP client to initiate contact with the first SIP client and establish a communication session using the registration information. The communication session is established by traversing the NAT device.