Abstract: A method for simulating an IDNX (integrated digital network exchange) network. Trunk and call information is downloaded from a network controller connected to the IDNX network to a personal computer. Call data is obtained defining each call placed over the network. Link data is also obtained describing the links over which the call is placed. The link data is arranged in two arrays, one defining a pointer based on the identity of connected nodes. The pointers point to a table which describes the link interconnecting the nodes. A call circuit table identifies each of the calls over the network. The call is placed on the model by debiting the in use bandwidth field of the table describing each link used in the call. Once calls are placed, an analysis of network performance is possible. Calls may be rerouted over the simulated model to evaluate different network configurations.

Abstract: A communication switching system having a plurality of switching nodes in which each switching node upon initialization completely establishes its own internal configuration. This establishment of internal configuration includes the number and type of switching modules and within each switching module: type of module control processor, type of internal switching network, printed board carriers, type and number of auxiliary circuits, and type and number of link interfaces. Each unit of a switching module reports relevant information to the module control processor; and in turn, the module control processor reports its own information and the information of the other units to a node processor (the main processor within a switching node). Further, each switching node and interfaces of the switching node automatically identifies the other switching nodes connected by communication links and switching paths to those switching nodes.

Abstract: A tracing system displays a transmission route between multiplexers in a transmission network.

Abstract: An automated translation input system to convert Mechanized Translation System (MTS) orders into Recent Change Messages that can be loaded into a program controlled switch without enhancement or changes in the MTS program to provide a significant saving in Switching Control Center (SCC) labor hours. The new system and method permit using the output of the MTS which would otherwise constitute a printed form for inputting the Automated Translation Input System (ATIS) where the forms are analyzed, the associated Recent Changes are analyzed, and the Recent Change Messages are prepared. The thus prepared Recent Change Messages are inspected by the SCC technician who, through a manual option in the ATIS system, gives the command to download the translations directly into the switch. This eliminates the need for key preparation of the Recent Change forms by the SCC technicians and results in an elimination of keying errors and a significant saving in time.

Abstract: A method and device for maintaining a PBX system by connecting the PBX system with a remote maintenance center 220 through a public switch telephone network (PSTN), a method for transmitting a state information of the PBX system to the remote maintenance by connecting a remote maintenance connection circuit automatically in case of the PBX system receiving an incoming call from the remote maintenance center, and a MODEM control circuit 302 for communicating the state information with an external device 220 by utilizing the MODEM 303 built in the system without using a separate port, are disclosed.

Abstract: A system gathers and displays information concerning status of a communications network without overloading the communications channels in the network. The monitoring system includes a monitor node, including an operator input interface. The monitor node is coupled to a first switching node in the distributed switching nodes of the network. The monitor node includes a first application maintaining topology data indicating the topology of the network and supporting a first protocol for updating the data with the first switching node. In addition, the monitor node includes a second application maintaining a list of alarm conditions entered in the node event logs in the network, and supporting a second protocol for updating the list with the plurality of distributed switching nodes. A third application runs in the monitor node for maintaining a monitor database indicating the configuration of the switching nodes as it is entered in the node configuration databases in the network.

Abstract: In a telecommunication system having a plurality of cooperating exchanges and using a separate signaling network, an existing exchange is replaced by a new exchange by a piecemeal transferring of interexchange trunks from the existing exchange to the new exchange and testing the trunks on the new exchange. All signaling messages pertaining to trunks originally resident on the existing exchange are addressed to the existing exchange, are intercepted and are selectively forwarded to the new exchange on the basis of recorded data defining trunks moved to the new exchange. One embodiment uses a point code converter connected between a signal transfer access point for the signaling network and both the old and the new exchange. The converter receives all messages addressed to the existing exchange and transfers the messages to either the old or the new exchange, depending on the present location of the trunk.

Abstract: The present invention provides a test set which checks the communication line from a central office to a telephone responder which has a predetermined telephone number and which generates an output signal consisting of a predetermined sequence of signals. The checking is performed from a central testing station from where an operator inputs a test signal which identifies the telephone number of the test set located in the central office from which the test is to be made. Once the connection is established, the telephone number of the responder to be called is transmitted. The test set includes a signal detector which identifies an input signal. The signal detector is interfaced to the responder transmission medium such that the signal detector receives responder output signal as an input signal. The test set further includes a memory which includes the correct signal which should be received from the responder with called telephone number, and a processor.

Abstract: An operation support system architecture for a telecommunication system contains a control arrangement (BWS) inserted between the system (S) to be operated and an opertor station (DSS). The control arrangmeent comprises, besides a processor and an input/output unit (EAB), a memory (RSP) which contains the operating and maintenance knowledge of the system (S), namely in the form of the CCITT Specification Language SDL/PR. Further the control arrangement (BWS) comprises a correlation memory (ZSP) in which are stored the definition for the formation of MML commands to the system (S) and the formal description of the reactions expected by the system (S). On the basis of the data in the two memories (RSP, ZSP), a translator (I), also present in the control arrangmeent (BWS), can send the correct and properly structured commands directly to the system (S) or respectively evaluate the reactions of the system (S).