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

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Kuhlmann, Klaus, Lybeer, Roger, Muyssen, John, Verlohr, Axel, Sonnemann, Manfred, Schweiger, Franz, Elstner, Siegfried
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Pappas, George C.
• Application Number:
  US07/233,750
• Time in Patent Office: 1,005 Days
• Field of Search: 364/200, 364/900, 370/60, 370/85.1, 370/94.1, 379/5, 379/29, 379/90, 380/25, 380/40
• US Class Current: 719/313
• CPC Class Codes: H04M 3/241 for stored program controlled exchanges
• CPC Class Codes: H04Q 11/0407 using a stored programme control
• CPC Class Codes: H04Q 11/0428 Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals

Abstract

Modularly Structured Digital Communications System having Operations-Oriented and Security-Oriented Components. The switching-oriented, the operations-oriented and the security-oriented components are divided into three structure levels such that apparatus program modules for generating logical switching technology messages, operating technology messages or security technology messages are provided in a line technology task structure. An operations-oriented coordination program module and switching procedure program modules for the control of the operations-oriented and of the switching-oriented information and data flow are provided in an operating technology switching technology coordination task structure. At least one operations-oriented and one security-oriented application program module for sequencing operations-oriented or security-oriented jobs are provided in an application task structure.

Claims

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 comprising

means 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, and

means 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.

2. The communications system according to claim 1, wherein the apparatus program modules are combined in at least one line technology task that has an input and output memory operated mailbox-like and administered by a line technology task organization program respectively allocated to the line technology task.

3. The communications system according to claim 2, wherein the line technology task is supplemented by a switching matrix network task having a switching matrix network apparatus program module administered by a switching matrix network task organization program.

4. The communications system according to claim 3, wherein a periphery memory administered by an input/output processor has an input terminal for messages for the terminal equipment acquired in at least one of the line technology task and the switching matrix network task and an output terminal for messages acquired from signals from the terminal equipment which are respectively controllable independently of one another.

5. The communications system according to claim 1, wherein the coordination program module is inserted into a coordination task to which an input and output memory operated mailbox-like an administered by a coordination task organization program is allocated.

6. The communications system according to claim 1, wherein the the switching procedure program module is inserted into at least one switching technology task to which an input and output memory operated mailbox-like and administered by a switching technology task organization program is allocated.

7. The communications system according to claim 1, wherein the security-oriented check and evaluation program modules are inserted into a check and evaluation task to which an input and output memory operated mailbox-like and administered by a check and evaluation task organization program is allocated.

8. The communications system according to claim 1, wherein the program bus structure forms a logical network node for intercommunication of the connection control program modules and at least a part of the performance feature program modules with a part of the apparatus program modules via input and output memories of a switching technology task and via input and output memories of a line technology task.

9. The communications system according to claim 1, wherein a transmission protocol, a virtual terminal protocol, defined independently of the communications service and independently of the type of terminal equipment, is provided for the program bus structure for operations-oriented messages transmitted between the line technology task structure and the operations technology coordination task structure and wherein a further transmission protocol, a virtual application protocol, also defined independently of the communications service and the type of terminal equipment and providing a compact data arrangement having a reduced number of control characters, is provided for the program bus structure for messages transmitted within the application task structure and between the application task structure and the operations technology coordination task structure;

and wherein a text processor program module is provided for converting messages in one of the two transmission protocols into messages in the other transmission protocol.

10. The communications system according to claim 9, wherein messages in the virtual terminal protocol and in the virtual application protocol are structured such that a system data head part having a defined sequence of message origin and message destination addresses is followed by a specific data head part associated with operations technology having protocol identification information different for the two protocols, by a designation of a job session to which the respective message belongs and by a destination address indicating the application program module required for running off the job session.

11. The communications system according to claim 10, wherein the text processor program module is inserted into the operations-oriented application task structure.

12. The communications system according to claim 11, wherein a data file administration program module for controlling access to peripheral data files is inserted into the operations-oriented coordination task structure, said data file administration program module being hierarchically subordinated to a data file administration task organization program, and wherein a memory program module for controlling search, read and write requests for memories accepting the data files is inserted into the line technology task structure.

13. The communications system according to claim 12, wherein the coordination program module is structured such that it initiates the selection of the corresponding application program module dependent on the nature of an application addressed within an operations-oriented job.

14. The communications system according to claim 13, wherein an application connection program module hierarchically subordinated to an application connection task organization program is inserted into the operations-oriented application task structure for set up and administration of a connection of the coordination program module to one of the application program modules.

15. The communications system according to claim 14, wherein the application connection program module is structured such that application program modules non-resistent in the application task structure are loadable into the application task structure from peripheral data files upon utilization of the data file administration program module and of the memory program module.

16. The communications system according to claim 1, wherein the connection control program module is directly subordinate to a switching technology task organization program and the performance feature program modules are utilized in connection control in the form of sub-programs of the connection control program module.

17. The communications system according to claim 1, wherein at least one of the apparatus program modules has a further, second sub-module adapted to security-oriented function in addition to having a sub-module adapted to a main function of switching technology and operating technology for a connected type of terminal equipment.

18. The communications system according to claim 17, wherein at least one of the apparatus program modules allocated to the switching-oriented terminal equipment has a third sub-module adapted to operations-oriented functions.

19. The communications system according to claim 17, wherein the apparatus program modules have a pre-processing program level that evaluates signal output by at least one terminal equipment or by the operating technology terminal equipment based on individual line criteria and converts messages from the operating technology coordination and switching technology task structure into setting data for at least one of the terminal equipment, operating technology terminal equipment or alarm indicating terminal equipment, and have an evaluation program level that converts the signal inputs of all types of terminal equipment into protocol-suited messages by means of system-associated parameters;

and wherein an allocation program resident in the evaluation program level respectively branches messages and information onto the sub-modules dependent on function.

20. The communications system according to claim 1, wherein a system initialization program module is inserted into the operations-oriented and security-oriented task structure, said system initialization program module being allocated to the multi-tasking operating system such that the initialization of a run up task that coordinates the initialization of the program modules of the task structures is caused by the system initialization program module in the multi-tasking operating system.

21. The communications system according to claim 20, wherein the program modules of the task structures are structured such that they control the initialization of data and hardware system components respectively allocated to them.

22. The communications system according to claim 21, wherein the initialization of the system components that are not unambiguously allocated to one of the program modules of the task structures are implementable by means of the system initialization program module.

23. The communications system according to claim 1 wherein a system status recovery program module is controlled via a data table that can be configurated by means of at least one operations-oriented application program modules and in which information about the system status recovery measures to be initiated in individual malfunctions, including the nature and the scope of fault alarm indications, are contained.

24. The communications system according to claim 1, wherein a commissioning program module provided for the commissioning and decommissioning of lines and assemblies of the communications system is inserted into the operations-oriented and security-oriented application task structure, said commissioning program module being called in by means of at least one operations-oriented program module.

25. The communications system according to claim 1, wherein a traffic data acquisition program module for the acquisition of connection information related to subscriber or communication service is inserted into the operations-oriented and security-oriented application task structure, connection information from at least one of the switching procedure program modules inserted into the coordination task structure being forwarded to said traffic data acquisition program module in the form of messages of the message protocol associated to the switching technology based on defined switching procedure sections.

26. 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 indicating 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 system computer further comprising

means 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 an 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 structured 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, and

means for connecting the line technology task structure to the operating technology and switching technology coordination task structure and the 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 messages communicated thereover formed and administered by the at least one multi-tasking operating 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;

a transmission protocol, a virtual terminal protocol, defined independently of the communications service and independently of the type of terminal equipment, provided for the program bus structure for operations-oriented messages transmitted between the line technology task structure and the operation technology coordination task structure, and a further transmission protocol, a virtual application protocol, also defined independently of the communications service and the type of terminal equipment and providing a compact data arrangement having a reduced number of control characters, provided for the program bus structure for messages transmitted within the application task structure and between the application task structure and the operations technology coordination task structure;

a text processor program module provided for converting messages in one of the two transmission protocols into messages in the other transmission protocol; and

messages in the virtual terminal protocol and in the virtual application protocol structured such that a system data head part having a defined sequence of message origin and message destination addresses is followed by a specific data head part associated with operations technology having protocol identification information different for the two protocols, by a designation of a job session to which the respective message belongs and by a destination address indicating the application program module required for running off the job session.

27. The communications system according to claim 26, wherein the text processor program module is inserted into the operations-oriented application task structure.

28. The communications system according to claim 27, wherein a data file administration program module for controlling access to peripheral data files is inserted into the operations-oriented coordination task structure, said data file administration program module being hierarchically subordinated to a data file administration task organization program, and wherein a memory program module for controlling search, read and write requests for memories accepting the data files is inserted into the line technology task structure.

29. 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 indicating 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 system computer further comprising

means 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 an 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 structured 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, and

means 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 lest one transmission protocol which operates independently of the communications service and the type of terminal equipment for the messages communicated thereover formed and administered by the at least one multi-tasking operating 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 module operatively connected to at least the program bus structure;

at least a part of the apparatus program modules for a further, second sub-module having security-oriented functions in addition to having a sub-module adapted to a main function of switching technology and operating technology for a connected type of terminal equipment;

the apparatus program modules having a pre-processing program level that evaluates signals output by at least one of the terminal equipment or by the operating technology terminal equipment based on individual line criteria and converting messages from the operating technology coordination and switching technology task structure into setting data for at least one of the terminal equipment, operating technology terminal equipment or alarm indicating terminal equipment, and having an evaluation program level that converts the signal inputs of all types of terminal equipment into protocol-suited messages by means of system-associated parameters, an allocation program resident in the evaluation program level respectively branching messages and information into the sub-modules dependent on function.