KR20000037616A - Interfacing method for performing remote program in exchange system - Google Patents

Abstract

PURPOSE: An interfacing method for performing a remote program in an exchange system is provided to implement an exchange function, with being affected by the differences of a hardware and operation system in the exchange system at a minimum, by performing a program of a system manager at an exchange controller using the remote program call interface in case of an information exchange. CONSTITUTION: If a processor(302) of a request for a remote program execution is called, the processor(302) in an exchange controller(11) receives a program and a value of a character string that means a certain input parameter, and transfers it to a system manager(12) by a message communication using a protocol. A remote program processor(303) in the system manager(12) receives the message from the processor(302). The processor(303) manages a process queue and message list, and combines received messages in the process queue and message list to execute a corresponding program of an exchange operating/managing program(304) in the system manager(12). A message(306) exchanged between the controller(11) and manager(12) includes a program name, process divider, message number, inputted character string.

Description

Remote program execution interfacing method in switching system

The present invention provides an exchange system that executes real-time functions in a distributed processing in an exchange controller and processes data processing functions having low real-time characteristics in a system manager, when exchanging information or performing mutual control between the exchange controller and the system manager. A remote program execution interfacing method for executing a program in a system manager using a remote program call interface, and a computer-readable recording medium having recorded thereon a program for realizing the same.

The exchange has the nature of a real time system.

However, such exchanges also require a lot of data work for real-time operation.

The exchange software implements call processing software that performs direct services in real time, from call origination to release, and maintenance software that provides a set of procedures to detect, isolate, and recover from abnormal behavior of hardware and software. Can be largely separated by software.

In the related art, all such software is configured to be implemented by being mounted on a processor of an exchange.

However, this software configuration requires a lot of memory, so that the real-time call processing function is limited to using the memory, thereby limiting the number of calls that can be processed concurrently, thereby reducing real-time performance. Therefore, there is a need for an interface for exchanging information between the two systems when using a computer to separate the functions of the real-time characteristic and the functions related to the data task, and to use the functions of the data task type. In this case, the interface needs to be designed and provided irrespective of the communication message because it can make the produced software function independent of the system.

In the conventional exchange system, the interface between application programs uses a message communication using a signal and an interface using a database.

This conventional exchange system is implemented by mounting the software in all systems on the exchange regardless of real-time processing or management.

Therefore, in the related art, a large portion of the memory of the exchange system occupies a large amount of non-real-time function, or a function that requires a non-real-time but comprehensive judgment operates with a real-time function, thereby degrading performance.

In order to solve the problems described above, the present invention provides a method for exchanging information between an exchange controller and a system manager in an exchange system that executes a real-time function in an exchange controller and separates and processes a data processing function having low real-time characteristics from the system manager. In the mutual performance control, by using the remote program call interface to the program in the system manager in the exchange controller, the remote program execution interfacing to implement the exchange function with minimal impact on the hardware or operating system constituting the exchange system. It is an object of the present invention to provide a computer-readable recording medium recording a method and a program for realizing the same.

1 is a block diagram of an exchange system to which the present invention is applied.

2 is an explanatory diagram showing a structure of software for configuring a flexible switching system to which the present invention is applied.

3 is an explanatory diagram showing a remote program execution relationship between an exchange controller and a system manager according to the present invention;

4 is a detailed flowchart illustrating an embodiment of a remote program execution process in an exchange controller in a remote program execution interfacing method according to the present invention.

5 is a detailed flowchart illustrating an embodiment of a remote program execution process in a system manager in a remote program execution interfacing method according to the present invention;

* Explanation of symbols for the main parts of the drawings

11: exchange controller 12: system manager

13: switch 14: subscriber terminal

In order to achieve the above object, the present invention provides a remote program execution interfacing method applied to an exchange system, wherein a remote program execution request processing unit of a called exchange controller receives a string value having a meaning of a program and a series of input arguments, A first step of constructing a remote program execution request message and transmitting it to a system manager via a communication protocol; And in response to a remote program execution request from the remote program execution request processing unit, operating the corresponding program in the exchange operation / management program by combining the received message in the processing queue and the message list according to the remote program execution request from the remote program execution request processing unit. And a second step of notifying the remote program execution request processing unit of the result of the execution.

In addition, the present invention, a remote program execution request processing unit of the called exchange controller receives a string value having a meaning of the program and a series of input arguments to the exchange system having a processor, and configures a remote program execution request message to communicate. Sending to a system manager via a protocol; And in response to a remote program execution request from the remote program execution request processing unit, operating the corresponding program in the exchange operation / management program by combining the received message in the processing queue and the message list according to the remote program execution request from the remote program execution request processing unit. A computer readable recording medium having recorded thereon a program for realizing a function of informing a result of execution to a remote program execution request processing unit is provided.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an exchange system to which the present invention is applied.

An exchange system to which the present invention is applied includes one or more subsystems combined with a switching unit 113 for performing data exchange, matching units 111 and 112 connected to the switching unit 113, and a processor 114 for controlling the exchange. And an exchange controller 11, which is composed of a monitor 122, a computer main body 121, and a storage device 123, which is in charge of information processing and system management.

The matching units 111 and 112 of the switching controller 11 are connected to the external subscriber station 14 and the link 132 in the case of the subscriber matching device, and the other switching unit 13 and the link 131 in the case of the relay line matching device. Leads to.

The matching section 111 and the switching section 113 in the exchange controller 11 are connected by an internal data transmission link 118.

In the processor 114 of the subsystem of the exchange controller 11, software 115 for controlling data exchange and software 116 for controlling the control are mounted for the control of the matching unit 111 and the switching unit 113. .

In the case of multiple subsystems, the exchange can go through three stages of data exchange. At this point, there is a subsystem with a central switching section 117.

The system manager 12 is equipped with software 124 for managing the service state and resource state of the entire exchange controller 11 or managing information necessary for exchange, and is responsible for information processing and operator registration. In addition, the storage device 123 stores information on billing and service statistics.

2 is an explanatory diagram showing a structure of software for configuring a flexible switching system to which the present invention is applied.

The present invention is to design and apply an interface for information exchange between the exchange system in the structure to clarify the distribution between the functions for the real-time portion and the data processing portion for the convenience of the application program, such an interface constitutes the exchange and It is possible to implement the exchange function with the least influence on the difference of the existing hardware or the operating system to secure the development and reuse of the application function and to provide a unified exchange software platform.

In order to provide such a unified exchange software platform, the software 115, 116, 124 is located separately in the system manager 12 and the exchange controller 11.

The program of the exchange controller 11 resides in the memory and operates, the software 124 of the system controller 12 operates only in the memory for the interfacing function for the application program, and the application software resides on the disk and is required for the interfacing function. Run at hour.

The real time operating system 201 is operated in the processor 114 of the exchange controller 11, and the general purpose operating system 211 is operated in the system manager 12.

The processor 114 of the exchange controller 11 and the system manager 12 exchange information by a communication protocol.

The application program interface 210 is provided in the exchange controller 11 so that modification of the application software does not occur depending on the type of protocol that the real time operating system 201 of the exchange controller 11 can accommodate.

Software 124 of system manager 12 utilizes a remote library, remote shared memory, and remote process to communicate with software 115 and 116 of exchange controller 11. An application program interface 210 for this purpose is located in the exchange controller 11. In addition, the system manager 12 also operates an application program interface 212 for communication required by the exchange controller 11. At this time, the interface for accessing the system manager 12 from the exchange controller 11 is a remote program execution and a remote file access method.

The processor 114 of the exchange controller 11 performs real time tasks such as signal processing, call control, number translation, route control, and the like (203).

The call service statistics collection unit 202 is notified of the progress of the real-time operation, and the statistical information notified to the call service statistics collection unit 202 is provided to the system manager 12 through the application program interface 210 provided in advance. It is delivered to the billing / statistics unit 219 via the application program interface 212 of the and is stored in the operation / management information database 218. The various information and data to be referred to in this real time task utilize the control data 204 in the shared area on the memory.

The control data 204 is changed by being changed and maintained through the system manager 12 and by the events occurring in the exchange controller 11. Here, the event in the switch controller 11 is a substantial service and failure state change.

The change of the fault state is changed by the state monitoring unit 205 and the testing unit 206. In addition, the change of the failure is transmitted to the failure analysis and alarm output unit 217 of the system manager 12 through the application interface unit 210, 212, the contents are delivered to the operation / management information database 218 and at the same time It is output to the web browser 228 of the operation manager via the web server 226 via the management interface 225 which is a common gateway, and is transmitted to the integrated network manager 229 through the integrated network management application interface 227. do.

When the system manager 12 changes the control data 204 of the switching controller 11, it is changed by a request from an operation manager or a network management center.

The request of the operation manager is via the operation interface 225, which is a common gateway implemented using the web server 226 and the web browser 228. The operation interface analyzes the input command to operate the programs 213 to 216 in the corresponding system manager 12.

For example, when an operator request for signal point registration, number registration, route registration, and service registration 213 is input, the corresponding program 213 is operated via the management interface 225 to operate the operation / management information database. After changing 218, the control data 204 is changed through the service control unit 207 of the exchange controller 11 via the application program interface unit 212, 210, and based on the changed control data 204 in real time. The function is activated.

On the other hand, when a request relating to startup management is input, the startup management unit 214 interacts with the startup control unit 209 of the exchange controller 11 to load the necessary function into the exchange controller 11.

When the change in the exchange configuration is input, the shape change unit 215 is operated to change the shape related matters in the control data 204 via the shape control unit 208 of the exchange controller 11.

When a control command for whether the test or monitoring is in progress is input, the system control unit 216 is operated to change the control data 204 via the state monitoring unit 205 or the test unit 206 in the exchange controller 11. do.

In this manner, the contents changed by the operator command in the system manager 12 are reflected in the operation / management information database 218 and the control data 204 of the system manager 12, and an event occurring in the exchange controller 11 is also included. It is stored in the control data 204 and the operation / management information database 218 of the system manager 12.

Thus, commands related to the output of various information or the status of services and resources may be performed by the system manager 12 itself. As a function of the system manager 12, the call control information output unit 220, the resource status output unit 221, the charging statistics information output unit 222, the shape output unit 223, and the system control information output unit 224. There is).

As described above, the structure of the software for the flexible switching system configuration to which the present invention is applied is the software in the system manager 12 without using message communication between the software in the processor 114 of the switching controller 11. Do not use message communication between them. In addition, since the application software does not directly use the message communication between the processor of the switch controller 11 and the processor of the system manager 12, and uses the application program interface units 210 and 212, the software is converted into system-independent software. Can increase the reusability of the exchange system software.

3 is an explanatory diagram showing a remote program execution relationship between an exchange controller and a system manager according to the present invention, and shows an interface relationship for executing a program of the system manager on the exchange controller side.

In the present embodiment, an interface method of exchanging information between two functions in an exchange system in which a real time function is executed in the exchange controller 11 and a data processing function having less real-time characteristics is separated and processed by the system manager 12, is performed. An interface method for executing a program in the system manager 12 in a controller 11 using a remote program call interface.

Referring to Fig. 3, when the control function in the exchange needs to execute a program to the system manager 12, the exchange control unit 301 in the exchange controller 11 calls the remote program execution request processing unit 302.

When the remote program execution request processing unit 302 is called, the remote program execution request processing unit 302 of the exchange controller 11 receives a string value having a meaning of a program and a series of input arguments, and is connected between the system manager 12. The string value is transmitted to the system manager 12 through message communication using the implemented communication protocol. At this time, the remote program processing unit 303 in the system manager 12 always operates and receives a message transmitted from the remote program request processing unit 302 of the exchange controller 11.

The remote program processing unit 303 in the system manager 12 manages the processing queue and the message list, combines the received messages in the processing queue and the message list, and exchanges the operation / management program 304 in the system manager 12. Run the corresponding program.

The system manager 12 uses a general operating system 305 such as Unix as the operating system. In this case, the message 306 transmitted between the exchange controller 11 and the system manager 12 includes a program name, a separator of a process requiring a remote program to be executed, a message number when one or more messages are needed, and a program. The input strings, the parameters passed to, are inserted into the message. If the message is a response from the system manager 12, execution code indicating whether the program execution is normal is inserted instead of the input string.

4 is a detailed flowchart illustrating a remote program execution process in an exchange controller in a remote program execution interfacing method according to the present invention, wherein the exchange controller 11 is configured to execute the remote program processing unit 303 of the system manager 12. Shows the remote program execution process that requires execution.

As shown in FIG. 4, in the remote program execution interfacing method according to the present invention, the remote program execution processing procedure in the exchange controller is first called by the remote program request processing unit 302 of the exchange controller 11 and is called with the call. A program name is separated from a series of strings to be allocated to a message to be delivered (401), and a separator of a process that requests to perform a remote program is allocated (402). Thereafter, the message number indicating the first message requesting the remote program execution is assigned to 1 (403), and the size of the input string is initialized to 0 (404).

Then, the size of the input string is compared with the maximum size of the argument that can be accommodated in the message (405).

As a result of the comparison, if the size of the current input string is larger than the maximum string size, after the message is sent to the system manager 12 (406), the size of the input string is initialized to 0 and the message number is incremented by one (message number = message). Number + 1) (407). Thereafter, after allocating the current input character to the message (408), it is checked whether the message allocation of all strings has been completed (409). Here, the size of the input string is sequentially increased one by one (input string size = input string size +1).

As a result of the comparison, if the size of the current input string is not larger than the maximum string size, after the input character is assigned to the message (408), it is checked whether the message allocation of all the strings is finished (409).

If the result of the check is that all string allocation has not been completed, to process the next string (410), the size of the next input string is compared with the maximum size of an argument that can be accepted in the message (405).

If all the character strings have been allocated as a result of the check, after setting the message number to 0 (411), the message is transmitted to the system manager 12 (412). Here, message number 0 indicates that this is the last message.

As such, the remote program request processing unit 302 of the exchange controller 11 transmits all messages to the remote program processing unit 303 of the system manager 12.

If the exchange controller 11 receives a program operation result from the system manager 12 (413), the exchange controller 11 analyzes whether an error has occurred or the reception time has been exceeded (414).

As a result of the analysis, if an error occurred in the reception result or the reception time was exceeded, an error number was assigned to the return value (415) and returned abnormally (417). If the reception result is normal, the return value is assigned to success ( 416) Return that the operation has been performed normally (417).

FIG. 5 is a detailed flowchart illustrating a remote program execution process in a system manager in a remote program execution interfacing method according to the present invention, and illustrates a process of executing a remote program called from an exchange controller in a system manager.

As shown in FIG. 5, in the remote program execution interfacing method according to the present invention, the remote program execution process in the system manager may be performed by the remote program processor 303 of the system manager 12 during an infinite execution operation. Upon receiving the request message (501), it inserts the received message into the message list (502).

Then, after analyzing whether the received message number is 0 (503), and inserting the message into the processing queue because the last message requiring remote program execution only when the received message number is 0 (504), the number of objects in the processing queue Check if greater than zero (505).

If the result of the check is that the number of objects in the processing queue is zero (that is, the queue is empty), there is no program to be executed, and therefore, the process transitions to the program execution request message receiving step 501.

If the result of the check is that the number of objects in the processing queue is greater than zero (ie, the queue is not empty), there is a program to be executed in the processing queue, and one processing object is deleted and the object is extracted (506).

Next, the same program name and calling process as the selected entity retrieve all the same messages from the message list (507), combine the retrieved messages in order (508), and determine whether there are errors in the combined messages (509). ).

As a result of the determination, if there is an error in the sequence of message combinations, it is checked whether the number of errors is n or more (510).

As a result of the check, if the error number is n or more times, the message is retrieved from the message list (511), and then the process proceeds to the program execution request message receiving step (501).

As a result of the check, if the number of errors is less than n, after reinserting the object into the processing queue (512), the number of errors for the corresponding library is also stored and the program transition request message reception step 501 is executed.

As a result of determination, if there is no error in the sequence of messages, after deleting the retrieved messages from the message list (513), the operating system 305 secures an image of the child process in memory to secure the area of the child process. (514).

Once the image is obtained (514), a program having the same name as the program name in the message is found and executed by the child process (515).

Looking at the process of the child process, first the message number is set to 0 (516), the return code is initialized to the normal value (517), and then the program execution is analyzed (518).

As a result of the analysis, if the program execution fails, an error number is assigned to the return code (519), and after the failure result message is transmitted to the remote program execution request processing unit 302 (520), the program execution request message receiving step 501 To transition to.

As a result of the analysis, if the program execution is successful, the success result message is transmitted to the remote program execution request processing unit 302 (520), and then the process transitions to the program execution request message receiving step 501.

As described above, the present invention can implement the exchange function with the least influence on the difference in the hardware or the operating system constituting the exchange, thereby ensuring the development and reusability of application functions, and providing a unified exchange software platform. have.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

As described above, the present invention uses a remote program execution interface to implement a mutual interface method that is required when operating software in a real time characteristic and information processing characteristic according to a characteristic in an electronic switching system based on distributed processing. The application can be easily configured to increase the reusability of application functions without being affected by system constraints such as protocols.

Claims (6)

In the remote program execution interfacing method applied to the switching system, A first step of receiving, by the remote program execution request processing unit of the called exchange controller, a string value having a meaning of a program and a series of input arguments, constructing a remote program execution request message and transmitting the message to a system manager through a communication protocol; And After the remote program processor of the system manager executes the corresponding program in the exchange operation / management program by combining the received message in the processing queue and the message list according to the remote program execution request from the remote program execution request processor. A second step of informing a result of the remote program execution request processing unit; Remote program execution interfacing method comprising a. The method of claim 1, The remote program execution request message of the first step is Include the program name, the identifier of the process that required the remote program to run, the serial number of the message if more than one message is needed, the size of the input string contained in the message, and the input string (input argument) information. A remote program execution interfacing method. The method according to claim 1 or 2, The second step, A third step of allocating the remote program request processing unit of the switching controller to allocate a program name to a message to be transmitted by separating a program name from a series of strings passed with the call, and assigning a separator of a process requesting to perform a remote program; A fourth step of allocating a message number indicating a first message requiring remote program execution as one ("1") and initializing the size of the input string to zero ("0"); A fifth step of comparing the size of the input string with the maximum size of arguments that can be accommodated in the message; As a result of the comparison in the fifth step, if the size of the current input string is larger than the maximum string size, after the message is sent to the system manager, the size of the input string is initialized to zero ("0") and the message number is increased by one. Sixth step; A seventh step of checking whether message allocation of all character strings is finished after allocating a current input character to the message; An eighth step of skipping to the seventh step if the size of the current input string is not greater than the maximum string size as a result of the comparison of the fifth step; As a result of the check in the seventh step, if all strings have not been allocated, the process proceeds to the third step to perform the next string. If all the strings have been allocated, the message number is set to zero ("0") for the last message. And a ninth step of sending a last message to the system manager; A tenth step of analyzing, if the result of program operation from the system manager is received by the exchange controller, whether an error occurs in the content of the result or a reception time has been exceeded; And As a result of the analysis of the tenth step, if an error occurs in the reception result or the reception time is exceeded, an error number is assigned to the return value and returned abnormally. If the reception result is normal, the return value is successively assigned and performed normally. 11th step to return Remote program execution interfacing method comprising a. The method according to claim 1 or 2, The second step, A third step of inserting the received message in a message list when the remote program processor of the system manager receives a remote program execution request message during an infinite execution operation; Analyzes whether the received message number is zero ("0") (i.e., the last message). If the received message number is zero ("0"), it is the last message requiring remote program execution. After inserting in the fourth step, checking whether the number of objects in the processing queue is greater than zero (“0”); As a result of the check in the fourth step, if the number of objects in the processing queue is "0" (that is, if the queue is empty), there is no program to run, and the process proceeds to the third step, and the number of objects in the processing queue is zero ( Greater than " 0 " (i.e., if the queue is not empty), there is a program to be executed in the processing queue, the fifth step of deleting one processing object and extracting the object; A sixth step in which the same program name and calling process as the selected entity search for the same message in the message list and combine the retrieved messages in order, and then determine whether there is an error in the combined messages; A seventh step of checking whether the error number is equal to or greater than a predetermined value (n) if the message combination has an error in the sequence as a result of the determination in the sixth step; An eighth step if the number of errors is equal to or greater than the predetermined value (n), after deleting the searched messages in the message list, the process proceeds to the third step; As a result of the check in the seventh step, if the number of errors is less than the predetermined value (n), after reinserting the object into the processing queue, the ninth step of storing the number of errors for the corresponding library together and proceeding to the third step step; As a result of the determination of the sixth step, if there is no error in the message combination, after deleting the retrieved messages from the message list, the operating system obtains an image of the child process in the memory to secure the area of the child process. 10 steps; An eleventh step of finding a program having the same name as the program name in the message and executing the child process; A twelfth step of setting whether the message number is set to zero ("0"), initializing the return code to a normal value, and analyzing whether program execution has failed; A thirteenth step of assigning an error number to a return code and transmitting the failure result message to the remote program execution request processing unit if the program execution is unsuccessful after the analysis of the twelfth step; And If the result of the analysis of the twelfth step, the program execution is successful, the fourteenth step to transfer to the third step after transmitting the success result message to the remote program execution request processing unit; Remote program execution interfacing method comprising a. The method of claim 1, The exchange system, A remote program execution interfacing method, characterized in that a real time function is executed in the switching controller and a data processing function having less real time characteristics is distributed in the system manager. In an exchange system equipped with a processor, A remote program execution request processing unit of the called exchange controller, receiving a program and a string value having a meaning of a series of input arguments, constructing a remote program execution request message and transmitting the message to a system manager through a communication protocol; And After the remote program processor of the system manager executes the corresponding program in the exchange operation / management program by combining the received message in the processing queue and the message list according to the remote program execution request from the remote program execution request processor. A function of notifying a result to the remote program execution request processing unit; A computer-readable recording medium having recorded thereon a program for realizing this.