JPH0537629A - Electronic exchange system - Google Patents

Abstract

PURPOSE:To eliminate the care of the use of a program and a data in a memory area being an object of revision on the way of a memory revision job in a program storage exchange in which the operation of memory revision is available during operation. CONSTITUTION:The electronic exchange system acts like an exchange by using a control means 11 operated according to various information including various programs stored in a storage section whose content is able to be revised. Then the storage section 12 is provided with a storage area storing the information for memory content revision. control means is provided with a temporary storage function storing the entered information to the storage area of the storage section upon the receipt of the information to revise the memory content of the storage section entered externally and with a simultaneous execution function executing the memory content revision of the storage section simultaneously based on the revision information of the memory content stored in the storage area without causing separation of revision processing.

Description

Detailed Description of the Invention

[0001]

The present invention relates to an electronic exchange,
In particular, the present invention relates to a program storage type electronic exchange system in which the contents stored in the memory can be changed without trouble while the exchange is in operation by using a maintenance terminal or the like.

[0002]

2. Description of the Related Art A program storage type private branch exchange uses a processor (CPU) as a control center, and a program to be executed by the processor and various data necessary for executing the program are stored in a rewritable memory for use. To do.

In the program storage type private branch exchange, a call control program for controlling a call, an operation program for performing self-diagnosis of each part and device of the exchange, and performing appropriate processing when a failure occurs, are stored in the exchange. Various programs such as maintenance programs for adding, deleting, and correcting accommodation data such as extensions and trunks are apparently running at the same time as a macro, but microscopically (that is, in an extremely short time unit). As can be seen, a plurality of programs are executed by being switched by an operating system (OS) in a very short time unit, such as a call control program at a certain timing and a maintenance program at a certain timing.

By the way, in such a program storage type electronic exchange, the contents of the memory can be corrected so that the entire program can be corrected in order to be able to immediately respond to an error or partial correction of the program. A maintenance command for changing the memory is prepared, and the memory contents can be changed during operation as an exchange.

It is generally equipped with a maintenance terminal connected to an exchange, that is, a keyboard and a display,
The maintenance terminal capable of exchanging information gives a command to the exchange to give a command to perform the change work. The memory content change command is processed every time one line is input in the CPU of the exchange, Change the contents of the memory area specified by the command. The memory change described in this one line is executed as a series of processes within an indivisible time. In other words, it is terminated without being interrupted by other processing. However, the CPU on the exchange side accepts only one line of commands.

Therefore, there is no problem if all the necessary changes are completed by a command that ends in one line, but the contents change in the memory of the exchange often results in a change command over a plurality of lines. In this case, Between the processing of one command line and the processing of the next command line, there is a risk that another program will be executed as described above.

This is because the software of the private branch exchange in which a plurality of events occur at random mainly for call control cannot occupy the central processing unit for time-consuming processing such as inputting a plurality of command lines. Is.

Therefore, in the case of an inseparable memory change work, that is, a program change that should not be used in the middle of the change, when the change work is divided into a plurality of change commands, the change is made. If another program is interrupted during the work, and the interrupted program uses the contents of the target area for memory change, the program under change and the data under change will be There is a risk that the program or data will be inconsistent and the system will be down, or the program or data will be destroyed.

[0009]

As described above, in the conventional program storage type private branch exchange (electronic exchange), the processor (CPU) is used as the center of control, and the program to be executed by the processor or the program execution is executed. Various necessary data are stored in a rewritable memory for use.

Therefore, it is necessary to change the program and the data when changing the system or changing various services. However, due to such a change, when the stored contents are changed in the rewritable memory, the stored contents can be changed while the exchange is operating in the conventional system. As a result, while performing basic operations (connection for incoming and outgoing calls, etc.), control such as rewriting and deletion of the memory is performed in the meantime.

Therefore, in the case of changing the program or changing the data for various services, there is an unavoidable risk that the basic operation of the exchange is executed while the contents are being changed. In this way, indivisible memory modification work such as rewriting a program (that is, target memory modification work that should not be used until the modification is completed).
When it is necessary to divide the command into multiple command lines due to the limitation of inputting the change command, execute the program in the memory change area or change the data in the memory change area during the memory change work. There is a problem that causes a serious failure such as stop of the exchange system (system down), program destruction, data destruction, etc. by referring to.

Therefore, the object of the present invention is to
In a program storage type exchange capable of changing memory during operation, there is no need to worry about using programs and data in the memory area to be changed during memory change work, and memory can be An object of the present invention is to provide an electronic exchange system capable of completing a change operation of stored contents.

[0013]

In order to achieve the above object, the present invention is configured as follows. That is, in the electronic exchange system operating as an exchange by the control means operating in accordance with various information including various programs stored in the storage unit whose contents can be changed, the storage unit stores information for memory content change processing. A storage area for accumulating is provided, and when the control means receives information for changing the memory content of the storage section input from the outside, the input information is stored in the storage area of the storage section. When the temporary storage function and the batch change command for memory content input from the outside are received, the change of the memory content of the storage unit based on the change information of the memory content stored in the storage area is performed. It is configured by including a collective execution function that executes the processing collectively without causing division.

[0014]

In the above structure, when the information for changing the memory content of the storage unit is received from the outside, the control unit stores the input information in the storage area of the storage unit and externally When the memory content change batch processing command information is received, the memory content change of the storage unit based on the memory content change information stored in the storage area is collectively performed without division of the change processing.

As described above, even when the indivisible memory changing operation is described by a plurality of memory changing instructions, the program is executed at once without rewriting the interrupts of other programs and rewriting, and then the other programs are executed. Since it is possible to prevent the contents being rewritten from being used by other programs, the system does not go down.
An electronic exchange system having a highly reliable memory content change processing function can be provided.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram of an electronic exchange system according to an embodiment of the present invention.

In FIG. 1, reference numeral 10 is a speech path switch for performing an exchange operation between an extension line, an outside line and an extension line. Reference numeral 11 denotes a central control unit, which is a call path switch 10
It plays a central role in controlling the entire exchange including the above. The central control unit 11 uses a processor (CPU) as a control center, and executes these control by executing a control program.

Reference numeral 12 denotes a storage unit, which is composed of a ROM (Read Only Memory) and a RAM (Random Access Memory), and holds various tables in addition to the control program and a working area. Used for. The control program and data are stored in the RAM, and the initialization program and the initial program loader are stored in the ROM so that the control content and service functions can be changed. Uses the data read function of the initial program loader to externally load programs and data.

Reference numerals 20a to 20n are line circuits which are interfaces for connecting the speech path switch 10 and the extension telephones, and 21a to 21n are extension telephones connected to the speech path switch 10.

The extension telephones are connected to the communication path switch 10 via the corresponding line circuits 20a to 20n. 13 is a signal generator for generating various tone signals, 1
Reference numeral 4 is a maintenance terminal (maintenance terminal). The maintenance terminal 14 has a keyboard and a display, and is connected to the central control unit 11 via an interface (not shown). By operating the keyboard, commands and data can be exchanged with the central control unit 11. Reference numeral 15 is a reception board, and the reception board 15 is connected to the central control unit 11 and the communication path switch 10 via a reception board interface 16.

In the present electronic exchange system, the speech path switch 10 is controlled by the central control unit 11 and uses time slots assigned by time division to exchange signals such as voices between each station line and each extension line and each extension line. By doing, the exchange operation is performed, the call path is secured, and the call is made possible. The central control section 11 exchanges information with various services such as exchange control, designated time call registration control from the extension telephone, designated time call execution control and maintenance terminal 14, read / write control for the storage section 12, etc. In addition, it has a function of performing various controls.

Reference numerals 31a to 31n are trunk circuits for interfacing with the office line (outside line) accommodated in the speech path switch 10. The trunk circuits 31a to 31n are direct currents associated with transmission and reception of calls to the office line. It is possible to detect the polarity reversal and the end of call.

Reference numeral 17 is a large-capacity external storage device such as a floppy disk device, an optical disk device, or a hard disk device, which is connected to the central control unit 11 via an input / output interface (not shown).

FIG. 2 conceptually shows the relationship between the structure of the memory change command group according to the present invention and the area for storing the memory change command. The memory change command group is a command group for giving to the central control unit 11 a command and the like for changing the contents of the RAM area of the storage unit 12, and the memory change processing program executes the necessary processing in accordance with this command. ..

In the case of this system, the memory change command group is stored in a specially assigned area in the RAM area of the storage unit 12. This area is the memory change instruction storage area 41. One or more memory change instructions 42 can be stored in the memory change instruction storage area 41, and no other program uses this area at all. Is done.

The memory change command 43 is a command group that provides various functions necessary for the memory change processing described in the present invention. The memory change command 43 includes a memory change display command 44, a memory change instruction addition command 45, a memory change instruction correction command 46, a memory change deletion command 47, and a memory change instruction batch execution command 48.

Of these, the memory change display command 4
Reference numeral 4 is a command for displaying all or part of the memory change instruction stored in the memory change instruction storage area 41 on the display of the maintenance terminal 14. The memory change instruction addition command 45 is a command for newly adding or inserting a memory change instruction to the memory change instruction storage area 41.

The memory change command modification command 46 is for modifying the memory modification command 42 stored in the memory modification command storage area 41, and the memory modification deletion command 47 is a plurality of memory modification command storage areas 41. This is to delete a part or all of the memory change instruction.

The memory change instruction batch execution command 48 sequentially executes some or all of the plurality of memory change instructions stored in the memory change instruction storage area 41.
The instruction is executed within an indivisible time, and other programs cannot be executed during that time. That is, a series of processing,
The program is executed continuously without interrupting other programs to complete the process at once.

A memory change processing program is prepared in the storage unit 12 for processing each of the above commands.
When this memory change processing program receives a memory change instruction given from the maintenance terminal 14 or the external mass storage device 17, the memory change processing program stores this instruction in the memory change instruction storage area 41, and the memory change instruction storage area 41 stores the instruction. When the memory change instruction batch execution command 48 given from the capacity storage device 17 is received, all the contents stored in the memory change instruction storage area 41 or a part of the specified contents are continuously executed, and the storage unit 12 stores According to this command, the memory contents of the RAM are changed and deleted.

The contents of the processing program are set so that other programs cannot be interrupted until all the commands to be executed have been executed.

FIG. 3 shows a program storage type exchange.
The operating system OS is the call control program P
1, the maintenance program P2, and the operation program P3 are sequentially run at extremely short time intervals t1. In the figure, the horizontal axis is the time axis, and OS, P1, P
2, P3, OS, P1, P2, P3 are executed in this order. In addition to this, there may be a program that constitutes the software of the exchange, and the execution order of each program, the time interval, etc. differ depending on the function of the operating system OS of each exchange.

FIG. 4 is a flow chart showing a procedure for performing an indivisible memory changing operation. Explaining in accordance with this flowchart, first, the content of the memory change operation is input with one or more memory change instruction commands or a memory change instruction describing data (S1). It is also possible to add, modify, or delete the memory change command during the input work (S3). When the input work is completed (S2), the memory change instructions are collectively executed, and the work is finished (S4).

FIG. 5 is a diagram showing the relationship between the input work of the memory change command and the program executed under the control of the operating system (OS).
Shows the conventional system, and FIG. 5 (b) shows the system of the present invention.

As shown in FIG. 5A, conventionally, if a memory change instruction for one row is input at timings t51, t54, and t55, the memory change instruction for one row is input. The memory change command is activated each time. Then, with respect to the memory change instruction for one line input at the timing t51, the timing t5
In the time interval given in 2, the processing of the input and the execution of the memory change instruction are performed, while the execution of other programs other than the memory change program is stopped. After the input processing and the execution of the memory change instruction are completed, the next memory change instruction is input (timing t5).
4) There is a significant time interval (timing t53), during which the OS activates another program.

The command thus input is executed line by line, and is used for execution of another program until the next command is input. However, the memory change instruction at the timing t51 and the memory change instruction at the timing t54. Is indivisible, that is, when it is necessary to execute the memory change instruction received at the timing t51 and the memory change instruction received at the timing t54 in order to complete the change of the memory contents, Even if the execution of the memory change instruction received at the timing t51 ends, the memory contents are incomplete, and a contradiction occurs on the memory during the time interval at the timing t53 at which another program is executed in this state. The program executed during the time interval at timing t53. If set to use the information of the region that is an object of memory changes, this contradiction, there is a risk of causing serious damage to the system.

On the other hand, in the method of the present invention shown in FIG. 5B, when a memory change command input command is input (t
61), along with this command, the memory change processing program is activated during the memory change command time interval (t6).
2) The memory change instruction obtained at t61 is stored in the memory change instruction storage area 41 in the RAM area of the storage unit 12.

In the system of the present invention, the command cannot be executed even after the storage. Then, there is a significant time interval until the next memory change command input command 64 is input (t63), and the OS executes another program during this time.

Unlike the conventional method, timings t61 and t
The memory change instruction input command input at 64 is only stored in the memory change instruction storage area 41. Here, since the memory change instruction storage area 41 is a special area that is distinct from the program area and the data area referred to by the program for execution, at the time interval of timing t63, the memory change of the RAM area in the storage unit 12 is performed. The target area has not caused any contradiction in memory yet.

When a memory change command batch execution command is input after a series of memory change commands 42 are stored in the memory change command storage area 41 in the RAM area of the storage unit 12 (t65), the memory change commands are again issued. When executed, the plurality of designated memory change instructions are executed during the time interval at timing t66. That is, in accordance with the contents stored in the memory change command storage area 41, the contents of the memory change target are changed at once at this point. During the time interval starting from this timing t66, the OS
Therefore, other programs are not executed.

Next, the relationship between the memory change command storage area 41 and the memory change command 43 in the device of the present invention will be described. With the memory change instruction addition command 45, a series of memory change instructions 42 describing an indivisible memory change operation are input and sequentially stored in the memory change instruction storage area 41. At this time, by the memory change instruction display command 44,
The already input memory change command 42 can be displayed, the memory change command correction command 46 can be used for correction, and the memory change command deletion command 47 can be used for deletion.

In this way, a series of memory change instructions 4
When 2 is completely stored in the memory change instruction storage area 41, the memory change instruction batch execution command 48 is next input to execute all or part of the memory change instruction stored in the memory change instruction storage area 41.

The memory change instruction batch execution command 48 has a function of executing a plurality of designated memory change instructions within one inseparable time interval. Therefore, other programs are not activated and executed while the plurality of designated memory change instructions 42 are being executed. In general, the software of an ordinary private branch exchange system is capable of performing such indivisible processing.

The present system having such a configuration is normally
Under the management of S, programs necessary for switching operations such as a call control program and an operation program are executed, and the system is operated as an exchange.

Here, when it becomes necessary to correct a bug in the call control program or the operation program, add a part of the processing contents, or change the data necessary for implementing various service functions of the exchange. For example, the keyboard of the maintenance terminal 14 is operated to input necessary commands and data for changing.

Then, the central control unit 11 receives the information based on this operation from the maintenance terminal 14 and executes the memory change processing program. To run this program, for example,
When the keyboard of the maintenance terminal 14 is operated, the process starts from the process of accepting one line of command line input from the maintenance terminal 14, and until the acceptance is completed, the call control program, the operation program, and the like are executed between executions. Is done.

Upon receiving an input of one command line from the maintenance terminal 14, the memory control processing program causes the central control unit 11 to store the one command line input in the memory change instruction storage area 41 of the storage unit 12. .. In this way, every time the command for one line of the command line is received from the maintenance terminal 14, the memory control processing program causes the central control unit 11 to input the command line for one line to the memory change command storage area 41 of the storage unit 12. Store.

In this storage, it is possible to freely edit the memory change instruction stored in the storage area by using a memory change operation command such as a memory change instruction execution command, an add command, a delete command, or a correction command. It is possible.

Then, when the memory change instruction batch execution command 48 is received from the maintenance terminal 14, the entire contents stored in the memory change instruction storage area 41 or a part of the designated contents are continuously executed and stored. RAM in section 12
According to this command, the contents of memory are changed and deleted.

As described above, after the memory change instruction is stored in the storage area, the batch execution instruction is input to sequentially execute the memory change instructions stored in the storage area, and during the other period, The program is executed without interruption by the program to complete the inseparable memory modification work at once.

Therefore, according to the present invention, these operations are carried out in the order shown in FIG. 5, and the contents of the memory area that needs to be changed can be changed at a stroke and the change can be completed. Since there is no interrupt processing of the program, it is possible to prevent the occurrence of an abnormality such as a system down due to the use of the memory contents being changed by another program.

As described above, in this system, in the electronic exchange system that operates as an exchange by the control means operating according to various information including various programs stored in the storage unit whose contents can be changed, the storage unit has a memory. A storage area for accumulating information for content change processing is provided, and when the control unit receives information for changing the memory content of the storage unit input from the outside, the input information is stored in the storage unit. When the temporary storage function of storing in the storage area of the storage unit and the change batch processing command information of the memory content input from the outside are received, the storage unit of the storage unit based on the change information of the memory content stored in the storage area is received. It is configured to have a batch execution function for collectively changing the memory contents without dividing the change processing.

In this configuration, when the information for changing the memory content of the storage unit is received from the outside, the control unit stores the input information in the storage area of the storage unit. When the memory content change batch processing command information is received from the outside, the memory content change of the storage unit based on the memory content change information stored in the storage area is collectively performed without the change processing being divided. carry out.

As described above, this device has a readable / writable memory (storage unit), adopts a program storage system in which a program is stored in this memory to operate, and is operated from an external device such as an attached maintenance terminal. In a switch capable of changing a part of a program or data in the memory, each time a memory change instruction is received from the outside, this instruction is not immediately executed, but a memory change instruction storage area is sequentially stored in the memory. One or more memory change instructions stored in the memory change instruction storage area are stored as a batch execution instruction of the memory change instruction from the outside, and are all divided into a plurality of time zones at once, without being divided into a plurality of time zones. It is characterized by executing.

Therefore, according to this system, the indivisible memory changing work described by a plurality of memory changing instructions can be safely performed without any influence on the system. Therefore, the program maintenance of the program storage type exchange is performed. The work can be carried out with reliability without inviting the system down.

The present invention is not limited to the embodiments described above and shown in the drawings, and can be appropriately modified and implemented within the scope of not changing the gist thereof. For example, the memory change instruction is changed. As a method of storing in the instruction storage area, it may be input from an external mass storage device such as a floppy disk device and stored without inputting from a maintenance terminal. Further, the operation of the maintenance terminal may be executed as a batch process by reading an instruction from the external mass storage device.

[0057]

As described above, according to the present invention,
In a program storage type exchange capable of changing memory during operation, there is no need to worry about using programs and data in the memory area to be changed during memory change work, and memory can be It is possible to provide an electronic exchange system capable of completing a change operation of stored contents.

[Brief description of drawings]

FIG. 1 is a block configuration diagram showing a schematic configuration of an exchange system showing an embodiment of the present invention.

FIG. 2 is a configuration of a memory change command group according to the present invention,
The figure which shows notionally the relationship with the area which stores a memory change command.

FIG. 3 is a diagram showing a state in which an operating system OS sequentially runs a call control program P1, a maintenance program P2, and an operation program P3 at extremely short time intervals t1 in a program storage switch.

FIG. 4 is a flowchart showing a procedure for performing an indivisible memory changing operation in the system of the present invention.

FIG. 5 is a diagram showing a relationship between a task of inputting a memory change command and a program executed under the control of an operating system.

[Explanation of symbols]

10 ... Call path switch, 11 ... Central control unit, 12 ... Storage unit, 14 ... Maintenance terminal, 17 ... External mass storage device,
20a to 20n ... Line circuits, 21a to 21n ... Extension telephones.

Claims (1)

Claim: What is claimed is: 1. An electronic exchange system that operates as an exchange when a control unit operates according to various information including various programs stored in a storage unit whose contents can be changed. A storage area for accumulating information for memory content change processing is provided, and when the control unit receives information for changing the memory content of the storage unit input from the outside, the input information is stored. Upon receiving a temporary storage function of storing in the storage area of the storage section and change batch processing command information of the memory content input from the outside, the storage section based on the change information of the memory content stored in the storage area. Electronic exchange, characterized in that it is provided with a collective execution function for collectively modifying the memory contents of the above without causing a break in the modification process. Stem.