Customer programmable real-time system

• US 4,747,127 A
• Filed: 12/23/1985
• Issued: 05/24/1988
• Est. Priority Date: 12/23/1985
• Status: Expired due to Term

• Current Assignee: Bell Telephone Laboratories, Inc. (Nokia Corporation)
• Original Assignee: American Telephone & Telegraph Company (AT&T, Inc.)
• Inventors: Zislis, Paul M., Kimminau, Deborah D., Morgan, Todd C., Hyatt, Wayne E., Leung, Wu-Hon F., Hansen, Terris L.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Connors, Mathew E.
• Application Number:
  US06/812,941
• Time in Patent Office: 883 Days
• Field of Search: 379/94, 379/90, 379/93, 379/96, 379/97, 379/98, 364/200
• US Class Current: 379/93.14
• CPC Class Codes: G06F 3/16 Sound input; Sound output speech processing G10L
• CPC Class Codes: G06F 8/31 Programming languages or programming paradigms
• CPC Class Codes: H04Q 2213/13548 call modeling, e.g. Basic Call State Model
• CPC Class Codes: H04Q 3/0033 customer-controlled
• CPC Class Codes: Y10S 379/914 Programmable telephone component

Abstract

A telecommunication and development system for the switching of voice and data under computer control in a customer programmable environment that allows real-time modification of communication services. The computer program controlling the system is written in a nonprocedural language that allows for the direct control of the telecommunication system on the basis of state definition, event definition, and action definition. Program scripts define a particular feature, and each script consists of a plurality of triples that automatically respond to the system state and signal information to execute the necessary actions to provide part of a feature to the telecommunication system. During provision of telecommunication services, a customer can add new features that not only add new operations to the system, but modify existing operations without interfering with the present operation of the system. This is possible since the nonprocedural language allows for the direct control of interaction between features and provides for the automatic execution of required operations during state transitions. In addition, the nonprocedural language allows a feature or script to control its own deactivation or activation. Also, the software development environment is based on a standard operating system allowing for ease of development. The above features allow a customer to program his or her own individual communication unit to provide desired features without affecting the operation of the telecommunication system or the features provided to other customers.

Claims

1. A telecommunication switching system for the communication of voice and data among a plurality of customer interface units and said system assuming a plurality of states and generating a plurality of signals, comprising:

means responsive to a first program routine for controlling the communication functions of said telecommunication switching system to provide a first set of services by being responsive to said plurality of states and said plurality of signals from said telecommunication switching system;

means defined by a second program routine for compiling source code instructions for a new service for said telecommunication switching system;

said controlling means comprises means defined by a third program routine for updating said first program routine with the compiled source code instructions thereby modifying said first set of services and adding said new service; and

means defined by a fourth program routine for activating the updated portion of said first program routine thereby providing said new service on said telecommunication switching system.

2. The telecommunication switching system of claim 1 wherein said activting means comprises means defined by a set of instructions for enabling said compiled source code instructions of said updataed portion that provide said new service to said first program routine without interfering with said first program routine'"'"'s real-time control of said telecommunication system.

3. The telecommuncation switching system of claim 2 wherein said controlling means comprises a first processor for executing said first program routine;

and

said compiling means comprises a second processor for executing said second program routine.

4. The telecommunication switching system of claim 1 wherein said fourth program routine comprises a plurality of groups of instructions each of which is responsive to a predefined system state and signal to execute and said activating means comprises:

means defined by a first group of instructions of said fourth program routine responsive to a first system time signal for enabling the updated portion of said first program routine.

5. The telecommunication switching system of claim 4 wherein said controlling means further comprises means defined by a fifth program routine for deactivating said updated portion of said first program in response to a second system time signal.

6. The telecommunication switching system of claim 5 wherein said fifth program routine comprises a plurality of groups of instructions each actuated by a predefined system state and signal and said deactivation means comprises:

means defined by a first group of instructions of said fifth program routine responsive to said second system time signal for generating a deactivate signal indicating that said updated portion of said first program routine is to be deactivated; and

said updated portion of said first program routine further comprises a plurality of groups of instructions each actuated by a predefined state and signal and one of said groups of instructions of said updated portion of said first program routine responsive to said deactivate signal for disabling said updated portion of said first program.

7. The telecommunication switching system of claim 1 wherein said first program routine comprises a plurality of groups of instructions each of which executes in response to a predefined system state and signal and said controlling means further comprises:

means defined by a first set of instructions of said first program routine for generating a leave signal upon the pending transition from the present state of said system to another system state; and

means defined by a second group of instructions of said first program routine responsive to said leave signal and the present state for performing common operations terminating said present state before leaving said present state.

8. The telecommunication switching system of claim 7 wherein said performing means further comprises means defined by one of the instructions of said second group of instructions of said first program routine for allowing other of said groups of instructions in said first program routine and in said updated portion of said first program routine to respond to said leave signal and said present state.

9. The telecommunication switching system of claim 7 wherein said means defined by said first set of instructions of said first program routine further comprises means for generating an enter signal upon said other system state being entered from said present system state;

and

said controlling means further comprises means defined by a third group of instructions of said first program routine responsive to said enter signal and said other state for executing common operations to enable entry into said other state.

10. The telecommunication switching system of claim 9 wherein said means for executing common operations further comprises means defined by one of said third group of instructions for allowing other groups of instructions of said first program routine to respond to said enter signal and said other state.

11. A computer system for controlling a real-time process assuming a plurality of states and generating a plurality of signals, comprisinig:

means responsive to a first program routine for controlling functions of said process to provide a first set of services by being responsive to said plurality of states and said plurality of signals from said process;

means defined by a second program routine for compiling source code instructions for a new service for said process;

said controlling means comprises means defined by a third program routine for updating said first program with the compiled source code instructions thereby modifying said first set of services and adding said new service; and

means defined by a third program routine for activating the updated portion of said first program routine thereby providing said new service for said process.

12. The computer system of claim 11 wherein said updating means comprises means defined by a set of instructions for enabling said compiled source code instructions of said updated portion that provide said new service to said first program routine without interfering with said first program routine'"'"'s real-time control of said process.

13. The computer system of claim 12 wherein said controlling means further comprises a first processor for executing said first program routine;

and

said compiling means comprises a second processor for executing said second program routine.

14. The computer system of claim 11 wherein said third program routine comprises a plurality of groups of instructions each of which is actuated in response to a predefined system state and predefined process signal and said activating means comprises:

means defined by a first group of instructions of said third program routine responsive to a first system time signal for enabling the updated portion of said updated first program routine.

15. The computer system of claim 14 wherein said controlling means further comprises means defined by a fourth program routine for deactivating said updated portion of said first program in response to a second system time signal.

16. The computer system of claim 15 wherein said fourth program routine comprises a plurality of groups of instructions each responsive to a predefined system state and signal to execute and said deactivation means comprises:

means defined by a first group of instructions of said fourth program routine responsive to said second system time signal for generating a deactivate signal indicating that said updated portions of said first program is to be deactivated; and

said updated portion of said first program further comprises a plurality of groups of instruction each responsive to a predefined state and signal to execute and one of said groups of instructions of said updated portion of said first program responsive to said deactivate signal for disabling said updated portion of said first program.

17. The computer system of claim 11 wherein said first program comprises a plurality of groups of instructions each of which is actuated in response to a predefined system state and signal and said controlling means further comprises:

means defined by a first set of instructions of said first program routine for generating a leave signal upon the pending transition of the present state of said system to a second system state; and

means defined by a second group of instructions of said first program routine responsive to said leave signal and the present state for performng common exit operations to termiante said present state.

18. The computer system of claim 16 wherein said means for performing said common exit operations further comprises means defined by one of the instructions of said second group of instructions of said first program routine for allowing other of said groups of instructions in said first program routine and in said updated portion of said first program routine to respond to said leave signal and said present state.

19. The computer system of claim 17 wherein said means defined by said first set of instructions of said first program routine further comprises means for generating an enter signal upon said second system state being entered from said present system state;

and

said controlling means further comprises means defined by a third group of instructions of said first program routine responsive to said enter signal and said other state for performing common operations to enable entry into said second state.

20. The computer system of claim 18 wherein said means for performing said common exit operations of the entry operation further comprises means defined by one of said third group of instructions for allowing other grops of instructions to respond to said enter signal and said second state.

21. A method for controllig a real-time process assuming a plurality of states and generating a plurality of signals by a control computer executing a program, comprising:

controlling said real-time process by said control computer responding to a first program routine to provide a first set of functions by being responsive to said plurality of states and said plurality of signals from said real-time process;

compiling source code instructions for a new function for said process;

updating said first program routine with the compiled source code instructions defining said additional services by said control computer system executing a third program routine thereby modifying said first set of functions and adding said new function; and

activating the updated portion of said first program routine by said control computer executing a fourth program routine thereby providing said new function for said process.

22. The method of claim 21 wherein said updating step further comprises the step of adding a set of instructions defining said additional functions to said first program routine, without interfering with said control computer'"'"'s execution of said first program routine to perform real-time control of said real-time process.

23. The method of claim 22 wherein said control computer comprises a first and a second processor means and said step of controlling comprises the step of executing said first program routine by said first processor;

and

said step of compiling comprises the step of executing said second program routine by said second processor means.

24. A method for programming and controlling a voice and data telecommunication system having a source code entry unit and having a plurality of system states and a plurality of system signals to provide a plurality of services each performing a predefined voice or data service by a series of operations with said system controlled by a first processor executing a program having basic sets of groups of instructions with each group implementing one of a plurality of operations of an individual service each of said groups of instructions, execution is in response to a predefined system state and a predefined system signal and a second processor executing a program for the compilation of source code instructions written in a nonprocedural language, said method comprising the steps of:

controlling said sytem by said firt processor executing each of said basic groups of instructions to perform the individual operation upon the present system state and system signal being in each of said groups of instructions'"'"' predefined state and signal, respectively;

entering a source code program that defines an additional service via said entry unit;

compiling the entered source code into an additional set of groups of instructions each to control said first processor to perform said additional service;

transferring said additional set of groups of instructions from said second processor to said first processor;

updating said basic groups of instructions with said additional groups of instructions in a predefined preference relationship that defines the execution sequence for a plurality of groups of instructions by said first processor thereby modifying said old services and adding said new service; and

activating said additional groups of instructions by said first processor.

25. The method of claim 24 wherein said first processor further comprises a plurality of control structures each corresponding to an individual system state and individual system signal, and said method further comprises the steps of:

referencing individually in each of said plurality of control structures one of the groups of instructions that respond to identical system state and system signal corresponding to each of said plurality of control structures in accordance with said predefined preference relationship;

identifying one of said control structures in response to the present system state and the occurrence of one of said system signals;

executing the group of instructions having the highest preference referenced by the identified control structure to perform an operation of a first one of said services operations in said telecommunication system;

executing the group of instructions having the second highest preference referenced by said identified control structure in response to the execution of one of the highest preference group of instructions thereby performing an operation of a second one of said services; and

inhibiting the execution of the group of instructions having third highest preference upon execution of one of the second highest preference group of instructions thereby inhibiting an operation of a third one of said services.

26. The method of claim 25 further comprises the steps of:

deactivating the set of program instructions containing said second preference group of instructions; and

executing the third preference group of instructions referenced by said identified control structure to perform the operation of said third one of said services in said telecommunication system in response to said system signal and upon said set of program instructions containing said second preference group of instructions being deactivated.

27. The method of claim 26 wherein said step of deactivation comprises the step of removing from said plurality of control structures all references to said second preference group of instructions'"'"' set of groups of instructions.

28. The method of claim 26 wherein each of said control structures is associated with one of said system states and each of said control structures comprises a plurality of tables each associated with one of said system signals occurring in the system state of the associated control structure, said updating step comprises the steps of:

determining the one of said tables that corresponds to the state and signal that actuates the execution of each additional group of instructions; and

storing into the determined one of said tables a reference for each of the additional groups of instructions for which the determination occurred.

29. The method of claim 28 wherein said step of deactivation comprises the steps of:

generating a deactivate signal;

searching for another one of said tables contained within said control structures that contains a group of instructions responsive to said deactivate signal;

storing a variable signal in said processor indicating that said second preference group of instructions'"'"' set of groups of instructions is to be deactivated in another one of said system states; and

stopping the further processing of said deactivate signal by a group of instructions of said other one of said table thereby inhibiting the deactivation of said set of instructions associated with said second preference group of instructions.

30. The method of claim 29 wherein said deactivation step further comprises the steps of:

changing the state of said system from the present state of a new state; and

purging said set of instructions containing said second preference group of instructions containing said other system state and upon said variable signal indicating that said second preference group of instructions'"'"' set of groups of instructions is to be deactivated.

31. The method of claim 25 wherein each of said control structures is associated with one of said system states and each of said control structure comprises a plurality of tables each associated with one of said system signals occurring in the system state of the associated control structure, said referencing step comprises the steps of:

determining the one of said tables that corresponds to the system state and system signal for each individual group of instructions; and

storing into the determined one of said tables a reference for each individual group of instructions in a prefrence relationship to all previously stored references of other groups of instructions stored in the determined one of said tables.

32. The method of claim 31 wherein said step of allowing comprises the step of obtaining the reference to the second highest preference group of instructions from the table containing said first highest prefrence group of instructions contained in the control structure of the present system state;

and

executing the second highest preference group of instructions.

33. The method of claim 32 wherein said inhibiting step comprises the step of:

ceasing to process said system signal upon execution of one of said second highest group of instructions by preventing the determination of the reference to said third highest preference group of instructions of said table.

34. The method of claim 24 further comprises the steps of:

changing from the present system state to another system state by the execution of an instruction of a first one of said groups of instructions;

generating a leave signal to define preparation to exit from said present state;

performing common exit operations terminating said present state before leaving said present state by the execution of a second one of said groups of instructions in response to ssaid leave signal and said system being in said present state;

generating another signal to define preparation to enter into said other state; and

performing common entrance operations to start said other state upon entering said other state by execution of a third one of said groups of instructions actuated by said enter signal and said system being in said other state.

35. The method of claim 34 wherein said processor further comprises a plurality of control structures, and said method further comprises the steps of:

referencing individually in each of a plurality of control structures ones of the groups of instructions that respond to identical system state and system signal corresponding to each of said plurality of control structures in accordance with said predefined preference relationship;

said step of preforming said common exit operations further comprises the steps of identifying one of said control structures in response to the present system state and said leave signal; and

actuating said second one of said groups of instructions to perform said common exit operations.

36. The method of claim 35 wherein said step of performing said common entrance operations further comprises the step of identifying another one of said control structures in response to the other system state and the entry signal;

and

actuating said third one of said groups of instructions to perform said common entrance operations.