Abstract: A method and a system for signaling used in a call setup in a telecommunication system comprising a telephone network, a Centrex exchange belonging to the telephone network and implementing a private number plan, a first telecommunication terminal, which is connected via a first Centrex subscription to the Central exchange, and a second telecommunication terminal, which is connected to the telephone network with a number comprised in the private numbering plan. In the method, a connection is set up between the first and second telecommunication terminals by using the number comprised in the private numbering plan. In the invention, the same APP parameter is used in the Centrex exchange, both for communication with another Centrex exchange and for communication with a VPN exchange, as is used by a OSIG VPN network in VPN ISUP signaling.

Abstract: Deter the lowering of the efficiency of data exchange in a data processing device that conducts data communications by using a serial bus conforming to the IEEF 1394 Standards.

Abstract: A method and system enables a packet-switched data communication in a wireless communications system to be quickly and easily reestablished after interruption. The computer communications protocol that has been negotiated during the establishment of the packet-switched data communication may be saved upon interruption and later restored. In an exemplary embodiment, a wireless subscriber activates a call-waiting-type service along with an option to retain a packet-switched data communication. Thereafter, the subscriber may be engaged in a data communication on a packet data channel of the wireless communications system. Acceptance of a subsequent incoming, circuit-switched voice call causes the data packet session to be suspended, but the negotiated parameters of the computer communications protocol are saved. After the subscriber terminates the voice call, another data packet session is established with the saved parameters without needing to renegotiate the computer communications protocol parameters.

Abstract: The invention is a system for providing virtual connections through an ATM interworking multiplexer on a call-by-call basis. A signaling processor receives signaling for a call and selects the virtual connection for the call. The signaling processor generates control messages that identify the selection and transfers the control messages to the ATM interworking multiplexer that accepted the access connection for the call. The multiplexer converts user information from the access connection into ATM cells for transmission over the virtual connection in accord with the control messages.

Abstract: A system for establishing a voice and signaling link through a PBX system from an remote telephone device includes a PBX system, a setless gateway, and an remote telephone device. The PBX system is coupled to a public switched telephone network (PSTN) via a trunk connection. The PBX system is also coupled to the setless gateway via a digital phone port, which includes a first bearer channel B1 and a second bearer channel B2. DTMF tone sequences from the remote telephone device are decoded by the setless gateway, which acts as a proxy to the PBX system. The setless gateway routes voice and signaling from the second bearer channel B2 to the first bearer channel B1, so as to extend the remote telephone device from the PBX system.

Abstract: A signal transfer point (STP) within a Signaling System 7 (SS7) telecommunications network receives SS7 signals transmitted by a local switch. In response to a determination that the destination node specified by the received SS7 signal is connected to an Internet Protocol (IP) network, the serving STP encapsulates the received SS7 signal within an IP packet and transmits the IP packet over an IP network using an IP address identifying an application service provider (ASP) associated with a STP serving the specified destination local switch as the destination address. All other SS7 signals are transmitted over an existing SS7 telecommunications network.

Abstract: The present invention is related to a method for analysing the functions of a signal transfer point in a telecommunications network, said method comprising:

Abstract: A method, apparatus, and computer program device enabling a computer network switching device to inform an attached requesting device of switch ports affected by configuration changes during the period of time since the last query by the particular requesting device. The switch device is initialized with a change index and data vector, the latter indicative of an initial port configuration. The switch increments the index in response to subsequent port configuration change events, and stores in association with the incremented index a data vector indicating the ports changed during the corresponding event. The switch stores an array of associated index and vector values. The switch responds to a query from an attached requesting device by informing the requesting device of specific ports affected by one or more configuration changes since the index value held by the requesting device was the current index value in the switch.

Abstract: A package for performing mutual conversion between a first signaling signal and a second signaling signal, including a first signaling signal converting unit for outputting mutually converted first and second signaling signals and outputting a current state information based on preceding state information and current first and second signaling signals; a second signaling state holding unit for holding the current state information up to the next frame; and a timer unit for detecting that a current state information matching with the predetermined state information appears and outputting a time-out signal after an elapse of a predetermined time. Further, this package is included to realize a time-division multiplexer. By this, in a speech handling network in which exchanges of different kinds of signaling signal systems are mixed, the mixing thereof is easily and simply enabled by an introduction of the package equipped with the signaling signal conversion facility.

Abstract: A method and apparatus for establishing private line connections between two lines connected to private terminals. A Provisioning Office exchanges signaling messages with the two switches connected to the two lines. The exchange of signaling messages allows one of the two switches to identify the two end system addresses of an interswitch network for interconnecting the two terminals. Advantageously, standard protocol messages can be used for establishing these private packet connections. Advantageously, the process of establishing private line connections is automated from the step of identifying the two lines to be connected in the Provisioning Office. Advantageously, this arrangement does not require the segregation of private network facilities.

Abstract: A method and system for assigning node numbers to network nodes in a network, the network being connected to a central device performing administration of the node numbers available for the network, wherein cases in which a request message is received at the central device, the central device ascertains a free node number from the available node numbers and transmits the ascertained node number to an appropriate network node.

Abstract: Data is mutually exchanged between a plurality of communication apparatuses even when requests from plural devices to a specific apparatus are presented simultaneously in a network such as the IEEE1394 system. A first command is sent from a first communication apparatus to a second communication apparatus which notifies the first apparatus that a specified state change will be executed by the second apparatus. When that state change is generated, the first apparatus is so notified and, in addition, each communication apparatus in the network is notified that the second communication apparatus is ready to accept the first command.

Abstract: A method of provisioning a local number portability capable communication network which comprises numerous service provider networks, with updated signalling routing information to reflect a porting change is disclosed. A central administration center first updates the ported to network with updated signalling routing information. After the ported to network has been successfully updated the central administration center then proceeds to update all intermediate service provider networks. After confirmation has been received that all intermediate networks have been successfully updated the central administration center then proceeds to update the ported from network. Provisioning of networks which include intermediate networks supported by a central administration center in the predetermined manner and sequence disclosed can advantageously prevent signalling messages from looping between non-synchronized networks. The provisioning sequence works equally well where only two networks are involved, i.e.

Abstract: The present invention provides an apparatus and method that allows the communication mode for communicating between two user devices to be selected based on the abilities of the user devices and/or the preferences of the users. Using the present invention, when an operator of a user device enters the destination address for another user device with which communication is sought, a Client Routing Assessment Profile Services (CRAPS) processor receives the signals from the source user device. The signals include information of the identity of the source user device and the destination user device. The CRAPS processor retrieves profile information from a database corresponding to the identity of the source user device and/or the destination user device. Based on the profile information retrieved, the CRAPS processor sends boot signals to the user devices involved in the communication instructing them to change to the appropriate communication mode.

Abstract: In a switching system with improved message distributor in which a common internal bus is used in order to improve the transmission of messages between a switching network connecting unit, a coordination processor connecting unit and a signaling connecting unit are provided. In this way, loading on the coordination processor can be reduced and the system power of the switching system can be increased.

Abstract: A node failure recovery mechanism for use in a data replicating system in a distributed computer environment wherein a plurality of servers are configured about one or more central hubs in a hub and spoke arrangement. In each of a plurality of originating nodes, updates and associated origination sequence numbers are sent to the central hub. The hub sends updates and associated distribution sequence numbers to the plurality of originating nodes. The hub tracks acknowledgments sent by nodes for a destination sequence number acknowledged by all nodes. Upon failure of a node, a node failure recovery method may be used to enable a “buddy” node to help the failed node gain readmission to a distribution group.

Abstract: A call process processor (CC) outputs a control instruction of a connection only to a line response unit at a source side. The line response unit at the source side transmits a connection control cell where a VPI/VCI corresponding to a specified connection is set, tag information indicating a route to a line response unit at a destination side is set, connection control information identifying it as the connection control cell is set in an empty area of the header and connection information for controlling the specified connection is stored, to an ATM switch. The line response unit at the destination side extracts the connection control cell which is transmitted from the line response unit at the source side and input from the ATM switch according to the connection control information, and controls the specified connection according to the extracted connection control cell.

Abstract: An Asynchronous Transfer Mode (ATM)-based distributed virtual tandem switching system is provided in which a network of ATM-based devices is combined to create a distributed virtual tandem switch. The system includes an ATM switching network that dynamically sets up individual switched virtual connections. The system also includes a trunk interworking function (T-IWF) device and a centralized control and signaling interworking function (CS-IWF) device. The trunk interworking function device converts end office voice trunks from TDM channels to ATM cells by employing a structured circuit emulation service. The centralized control and signaling interworking function device performs call control functions and interfaces narrowband signaling and broadband signaling for call processing and control within the ATM switching network. Consequently, the ATM based distributed virtual tandem switching system replaces a standard tandem switch in the PSTN.

Abstract: A method for performing translation type mapping in a No. 7 gateway signaling network is disclosed, which configures and searches a translation type mapping table to perform the pertinent translation type mapping between communication network providers using different translation types. An interworking signaling connection control part service can thus be provided without modifying the signaling network, suspending service, or newly defining a translation type.

Abstract: A system and method to detect a call trigger during a call without requiring a service platform to remain connected to the call. A first communication device transmits a call having call signaling and user communications. A signaling processor receives the call signaling from the first communication device and selects a connection to a second communication device. An interworking unit receives the user communications from the first communication device and converts the user communications from a time division multiplex format to asynchronous transfer mode cells that identify a selected connection to the second communication device and transports the user communications to the second communication device. The interworking unit detects a call trigger in the user communications. The interworking unit transmits call trigger data to the signaling processor.

Abstract: A network switch including a plurality of network ports for receiving and transmitting data, where each port includes at least one statistics register for storing statistics information, such as Ethernet statistical and configuration information. The switch also includes a switch manager, which further includes a memory, retrieval logic for detecting a statistics request signal and for respondingly retrieving the statistics information for storage in the memory, and response logic for asserting a statistics response signal after the statistics information is stored. A processor is coupled to the switch manager through a bus, where the processor asserts the statistics request signal and then detects assertion of the statistics response signal. Upon detecting the response signal, the processor retrieves the statistics information from the memory.

Abstract: A method and apparatus for transporting data include processing that begins by receiving a bit stream of data at a rate of at least a bit per input interval. The bit stream of data corresponds to ingress packetized data that has been packetized based on one of a plurality of data packetizing protocols (e.g., HDLC encapsulated data, frame relay, PPP, and/or SMDS). As the bit stream is received, the data is extracted from the bit stream to produce extracted data, which is stored in ingress local memory. When a sufficient amount of extracted data is stored in the ingress local memory (i.e., an ingress data word is stored), it is transported to a non-local memory, where the transporting is based, at least in part, on content of the ingress data word. The processing also includes transporting stored egress data words from a non-local memory to an egress local memory based, at least in part, on content of the egress data words.

Abstract: A method and apparatus for signal mediation in a common channel signaling network are described. The method involves identifying candidate message signal units that require mediation and transmitting the candidate signal unit to an associated mediation function which performs access mediation on the contents of the candidate signal unit. The access mediation function may return one or more data packets to the network. The apparatus includes the signal transfer point, the associated mediation function and enhanced functionality in the signal transfer point for screening candidate signal units. The advantage is a more flexible and easily managed signal mediation point that removes the bulk of signal mediation from the signal transfer point so that the signal transfer point can remain dedicated to its signal transfer function.

Abstract: The invention is a system and method for processing connections. Connection identifiers are assigned to indexes and stored in corresponding index latches. When communications arrive over a particular connection, the identifier for the particular connection is provided to all of the index latches. The index latch that stores a matching connection identifier provides its associated index. The index can be used to access a memory location that houses a processing instruction for the particular connection. The invention can be used within ATM multiplexers and gateways to facilitate connection processing.

Abstract: An integrated multiport switch (IMS) in which an on-chip management information base (MIB) accumulation processor enables monitoring of a significantly larger number of MIB objects to be stored in external memory while minimizing media access controller (MAC) complexity. A MAC for each port in the IMS outputs a MIB report for each transmission or reception of data according to a specific encoded format to a MIB engine. The MIB engine decodes the MIB report into a plurality of associated MIB objects, which are temporarily accumulated until the external memory is updated. The MIB engine initiates the stored MIB value updating process by retrieving the values from the external memory and adding the accumulated MIB objects to the retrieved values. The updated MIB objects are then transmitted back to the external memory for storage therein and the MIB engine object values are reset.

Abstract: A new method of processing Asynchronous Transfer Mode (ATM) signaling messages is described wherein a plurality of computing units (CUs), each running signaling processing software, collectively provide signaling processing services for all the ports of a switch. As more ports, and more cards, are added to a switch, CUs can be incrementally added to support additional traffic. More significantly, in order to optimize the utilization rates of the plurality of CUs, the method provides for dynamic load-sharing of signaling traffic between CUs, such that a CU is allocated not on a per port basis, but on a per switched virtual circuit (SVC) session basis.

Abstract: A network switch data decision making engine is diagnosed while the switch is operating or after an error is detected. The switch receives data from connected stations and sends header information to the decision making engine. The header information is simultaneously transmitted to an external device. The decision making engine generates a data forwarding decision and outputs the decision to the external device. The operation of the decision making engine can then be checked by an external crevice, such as a logic analyzer.

Abstract: A type of switching fabric for exchanging variable-size frames of digital information between frame processors coupled directly or indirectly to one or more digital communication lines. It comprises one or more multi-line serial communication controllers (MSCCs), and a backplane providing a full mesh of serial point-to-point bi-directional links between each MSCC, and, in a loopback, from each MSCC back to itself. The MSCCs collectively manage the transfer of variable-size frames between the frame processors. To transfer digital information from a source line to a destination line, a frame processor coupled to the ingress line drives the switching fabric by signaling its MSCC that there is information. The ingress MSCC then switches the digital information through the backplane to the MSCC serving the frame processor coupled to the egress line. The switching fabric uses a clocking scheme that makes possible high throughput rates.

Abstract: A network interconnect device and message exchange protocol for forwarding data among packet forwarding devices are provided. According to one aspect of the present invention, data is forwarded between a first and second packet forwarding device coupled to an interconnect device. The interconnect device receives a menu message from the first packet forwarding device that indicates one or more types of data that are awaiting transmission on the first packet forwarding device. Based upon the menu message, the interconnect device transmits an order message selecting a type of data of the one or more types of data awaiting transmission to the first packet forwarding device. The interconnect device receives a message from the first packet forwarding device containing data of the type selected by the order message. The interconnect device then forwards the data to the second packet forwarding device.

Abstract: A message exchange protocol for interconnecting packet forwarding devices through an intermediate network interconnect device is provided. According to one aspect of the present invention, a method is provided for communicating data between packet forwarding devices. The presence of an interconnect device that is coupled between a first packet forwarding device and a second packet forwarding device is detected by recognizing a configuration sequence, for example. After the link between the interconnect device and the first packet forwarding device is established, the first packet forwarding device receives a command from the interconnect device requesting the types of data that are pending on the first packet forwarding device. Responsive to the command, the first packet forwarding device transmits a "menu" including information indicating the availability of one or more types of data that are awaiting transmission to the interconnect device.

Abstract: A technique for designating output interfaces through which a data unit is transmitted in point-to-multipoint transmission is disclosed. An indicating word having a flag field, a group indicator field and a bitmask field is employed. The number of bits in the bitmask is less than the total number of output interfaces. The bitmask field has a plurality of bits for indicating output interfaces and the group indicator field designates an offset value such that the bitmask field and group indicator field together indicate particular individual output interfaces. The flag field serves as notification that additional such words are to be received in association with a given point-to-multipoint data unit transmission.

Abstract: The invention is a system and method for processing connections. Connection identifiers are assigned to indexes and stored in corresponding index latches. When communications arrive over a particular connection, the identifier for the particular connection is provided to all of the index latches. The index latch that stores a matching connection identifier provides its associated index. The index can be used to access a memory location that houses a processing instruction for the particular connection. The invention can be used within ATM multiplexers and gateways to facilitate connection processing.

Abstract: A central control unit responsible for path control collects data from a distribution/concentration unit by issuing thereto a command containing the specification of multiple data items. The command also contains the specification of a window size. Of the requested data, the distribution/concentration unit first transmits data in an amount not exceeding the window size, and then, after reception of an ACK order from the central control unit, transmits remaining data if any.

Abstract: A serial data interface device is coupled to electronic devices or other data transmitters or receivers, such as disk, optical, tape or CD-ROM drives, computers, printers, etc. The interface includes first and second ports capable of receiving and transmitting information to respective electronic devices, and first and second storage devices, such as frame buffers, for storing information. Each of the storage devices is coupled to both the first and second ports and are coupled to another electronic device. Included in each storage device is a main memory that is coupled to at least one of the electronic devices and at least one of the ports. A control memory that is coupled to the main memory is also included, along with a main memory arbiter that is coupled to the control memory and the main memory. Further included is a buffer allocation control that is coupled to the at least one electronic device and at least one of the ports.

Abstract: The present invention is a system and method for transmitting proprietary parameters in a telecommunications network conforming to the ANSI SS7 ISUP Standard. The method includes the steps of identifying proprietary parameters to be transmitted as part of an ISUP SS7 signaling message that includes a network specific Generic Digits parameter and encapsulating those parameters within the network specific Generic Digits parameter.

Abstract: The arrangement is for coupling optional additional equipment to terminal equipment of private branch exchanges via an additional equipment interface, particularly according to the ETSI standard. The terminal equipment has an option bus via which arbitrary additional equipment can be connected. An additional equipment driver specific to the additional equipment and that represents the additional equipment interface is provided in the private branch exchange. The terminal equipment provides a communication channel between the additional equipment and the additional equipment driver in the private branch exchange via which the additional equipment and the additional equipment driver communicate according to a protocol specific to the additional equipment.

Abstract: The present invention is a system and method for transmitting proprietary parameters in a telecommunications network conforming to the ISUP Standard. The method includes the steps of identifying proprietary parameters to be transmitted as part of an ISUP signaling message that includes a network specific Generic Digits parameter and encapsulating those parameters within the network specific Generic Digits parameter.

Abstract: The communication control apparatus can suppress the maximum cell intervals and further enables the simultaneous transmit decision processing for a plurality of the virtual lines.

Abstract: A method for selecting one link out of M outbound links in a linkset (10) coupling a first component and a second component is provided. The first component includes N devices coupled to the M links. The method includes the steps of first providing an X-bit code having 2.sup.x possible code combinations used for link selection, and assigning a predetermined number of code combinations for each device where the assigned code combinations for a device is a function of an unique device number associated with each device. The outbound link is then selected for transmitting outbound data based on the code combination assignment.

Abstract: The present invention relates to a method and an arrangement for establishing a bearer capability classification of a received, incoming call to an ISDN exchange, the received call has a directory number, but no or faulty bearer capability classification. The method includes the steps of setting a default bearer capability to the call and if the call requires a different bearer capability then the bearer capability is being converted to the required bearer capability class.

Abstract: A data management system is connected to a Signaling System 7 telecommunications network (SS#7). Network elements and other data sources of the SS#7 network provide alarm data to the management system when problems occur with the network. The data management system includes a database library that classifies the problem and provides prioritized resolutions, based on past historical events. The library continues to expand with data each time an alarm is resolved. Data from the network elements are also stored for generation of reports, such as those dealing with configuration, performance, faults, and security.

Abstract: A switching system comprises a time division switch for forming a fixed path through which a line circuit and a trunk circuit are connected to each other. Both the line circuit and the trunk circuit have a discrimination function and a transfer function. For example, when the trunk circuit receives system data packets including predetermined system data packets from a call processor, the trunk circuit discriminates the predetermined system data packets from the system data packets using an identifier of each packet. The predetermined system data packets are transferred to the line circuit through the fixed path of the time division switch. Receiving the predetermined system data packets from the trunk circuit, the line circuit stores the predetermined system data as well as system data for the trunk circuit received from the call processor into a memory thereof.

Abstract: LAN's are customarily used for pure data communication. Voice communication via a LAN is only possible with the constraint of other subscribers being subjected to long waiting periods during the relatively long occupation time. The present LAN expands the functionality of work stations connected to the LAN, by using ATM technology to meet the communication requirements of an office environment. A network node or a conventional work station (3) is expanded by means of a unit which performs switching technology functions, so that terminals of the most different types (4, 5, 6, 7) can access the LAN via interface circuits (41, 51, 61, 71), resulting in a private network with distributed telecommunication installations. In this way, real-time connections with different bandwidth requirements, such as for example video conferences and pure voice transmission, are made possible. The thus expanded ATM-LAN is suitable for all types of communications taking place in an office.

Abstract: The object of the invention is to provide a method and a circuit for a crosspoint buffer-type self-routing switch circuit in an ATM switch that allows a switch of higher speed and greater efficiency with a more compact hardware construction and without complicated circuit configuration or operation.

Abstract: A system for transmitting data in high precision by restricting a delay in data transmission time includes a hub. The hub receives through the transmission media a data frame transmitted from a communication device that has a transmission request among a plurality of communication devices, and relays the received data frame to a destination communication device based on a destination address included in the received data frame.

Abstract: Disclosed is a method and apparatus for testing segmentation and reassembly functionalities of a communication network signalling node. A test signal is provided to a message transfer part ("MTP") of a signalling node. The test signal includes a first user portion, and the first user portion includes test parameters. The MTP and a connected signaling connection control part ("SCCP") then process the test signal and provide the first user portion to an application layer of signaling node. After receiving the first user portion, the application layer generates a second user portion based on the test parameters. The second user portion is then provided to an SCCP to be tested. The SCCP to be tested the performs segmentation operation on the second user portion, thereby creating a plurality of test signal segments.

Abstract: A method of volume screening signalling messages in a communications signalling system, in which control orders from a centralized control are distributed so as to provide equitable volume screening of selected signalling messages being sent over each available communications link of a plurality of links within link sets that interconnect signal transfer points (STPs) of the system. This is achieved by dynamically apportioning the acceptance rate of the selected signalling messages from each available link, in the same proportion as that of the total signalling messages being sent over that available link.

Abstract: An off-board or remote database controls routing of out-of-band signaling messages through signaling transfer points (STPs). The preferred embodiment relates to improvements in an SS7 common channel interoffice signaling system which transports routing control type signaling messages and the like between switching offices of a public switched telephone network. At least one STP is programmed to recognize certain aspects of a signaling message as a `point in routing` (PIR) which triggers a database query or `dip` to the remote database. The database provides an instruction to the STP as to how to translate and/or route the particular signaling message. The signaling message routing information in the database may be extremely dynamic, for example varying with time of day, point-of-origin, traffic congestion, etc.

Abstract: An ATM cell demultiplexing control apparatus comprising an ATM switch interface circuit for performing an interface function with an ATM switch link and outputting ATM cell data received from the ATM switch link and a start signal, a register circuit being enabled in response to the start signal from the ATM switch interface circuit, the register circuit shifting the ATM cell data received from the ATM switch interface circuit to extract a virtual path indicator therefrom and outputting the extracted virtual path indicator and the received ATM cell data, a memory for storing a virtual path indicator table therein and outputting information listed in the stored virtual path indicator table as a processor routing bit map in response to the virtual path indicator from the register circuit, a local processor for updating the virtual path indicator table stored in the memory, a processor cell transmitter for outputting a reception FIFO selection signal in response to the processor routing bit map from the memory t

Abstract: A telecommunication network has first and second subscribers connected to first and second telecommunication switches, respectively. A third switch is disposed at a hierarchical level above the second switch and receives a call setup message. The call setup message includes a first group affiliation parameter defining one organization of which the first subscriber is a member and a destination number of the second subscriber called by the first subscriber. A record in a database coupled to the third switch is located in response to receiving the call setup message. The located record is based on the destination number contained in the call setup message. A call screening parameter stored in the record is also identified. A determination is made of whether the call will be allowed to terminate to the second subscriber based on a comparison of the call screening parameter and the first group affiliation parameter. Thus, call screening is based on the membership of the first subscriber in an organization.