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Modularly structured digital communications system for interconnecting terminal equipment and public networks, and having operation and reliability programs

  • US 5,018,097 A
  • Filed: 08/19/1988
  • Issued: 05/21/1991
  • Est. Priority Date: 08/21/1987
  • Status: Expired due to Fees
First Claim
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1. A modularly structured digital communications system for connecting terminal equipment to one another and to public networks comprising:

  • at least one operating technology terminal equipment;

    at least one alarm indicting terminal equipment indicating alarm reports acquired from system-security-oriented test procedures; and

    a central system computer having a system data base and at least one multi-tasking operating system, said central computer system further comprisingmeans for administration of a line technology task structure having apparatus program modules for interfacing with types of terminal equipment for generating logical messages and operating technology messages from inputs received from at least one of the terminal equipment and operating technology terminal equipment, and for outputting setting data corresponding to the type of terminal equipment and acquired from at least one of logical messages, operating technology messages, and alarm messages, the setting data being provided for at least one of terminal equipment and operating technology terminal equipment and alarm indicating terminal equipment,means for administration of operating technology and switching technology coordination task structure having an operations-oriented coordination program module for the control of the operations-oriented information and data flow, having switching procedure program modules that, independent of the type of terminal equipment and independent of communications services, are structure for forming logical sub-processes of the overall switching process such that further performance feature program modules for the activation and de-activation of corresponding control procedures are formed in addition to at least one connection control program module for the control of set up and clear down of connections, and having at least one security-oriented check and evaluation program module for the implementation of non-time-critical, security-oriented check and evaluation events,means for the administration of an operations-oriented and security-oriented application task structure having application program modules for the execution of application-oriented functions,whereby at least one part of the program modules are respectively individually accessible to the data base via defined data base access routines, andmeans for connecting the line technology task structure to the operating technology and switching technology coordination task structure and to the operations-oriented and security-oriented application task structure, having a program bus structure having at least one transmission protocol which operates independently of the communications service and the type of terminal equipment for the message communicated thereover formed and administered by the at least one multi-tasking operation system;

    the apparatus program modules operatively connected to at least one of the program bus structure, the terminal equipment and the operating technology terminal equipment;

    the coordination program module operatively connected to at least the program bus structure;

    the application program modules operatively connected to at least the program bus structure.

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