JP3226566B2 - Electronic exchange system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electronic exchange,
More particularly, the present invention relates to an electronic exchange system of a program storage type in which contents stored in a memory can be changed without any trouble during operation of the exchange 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) at the center of control, and stores a program to be executed by the processor and various data necessary for executing the program in a rewritable memory for use. I do.

[0003] In a program storage type private branch exchange, a call control program for controlling a telephone call, an operation program for performing self-diagnosis of each part and device of the exchange and performing an appropriate process when a failure occurs, are stored in the exchange. Various programs, such as maintenance programs for adding, deleting, and modifying the stored data of extensions and trunks, are running at the same time on a macro scale, but on a micro scale (ie, in very short time units). At a certain timing, a plurality of programs are switched and executed by the 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, in order to be able to respond immediately to program errors or partial corrections, the contents of the memory are corrected so that the entire program can be corrected without being replaced. A maintenance command is provided to change the memory contents, and the memory contents can be changed while operating as an exchange.

This generally includes a maintenance terminal connected to the exchange, ie, a keyboard and a display.
The maintenance terminal capable of transmitting and receiving information inputs a command to give a command to the exchange, and performs a change operation. The command for changing the memory contents is processed by the CPU of the exchange every time a line is input, and Changes the contents of the memory area specified by the command. The memory change described in one line is performed as a series of processes within an indivisible time. That is, the process ends without being interrupted by another process. However, the command received by the CPU of the exchange is one line.

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

This is because software of a private branch exchange in which a plurality of events occur at random with call control as the main function cannot occupy the central processing unit due to time-consuming processing such as inputting a plurality of command lines. It is.

Accordingly, in the case of an inseparable memory change operation, that is, a program change that should not be used in the middle of the change, if the change operation is divided into a plurality of change commands, the change is performed. Other programs will be interrupted during the work, and if the interrupted program uses the contents of the memory change target area, the program being changed or the data being changed will be deleted. Referencing may cause inconsistency in programs and data, leading to a risk of system failure, program destruction, data destruction, and the like.

[0009]

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

Therefore, when a system is changed or various services are changed, a program change or data change is required. However, with such a change, when performing a storage content change operation on the rewritable memory, in the conventional system, the storage content can be changed while the exchange is operating, but this is not possible with the exchange. While executing the basic operation (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 a program change or a change of data for various services, there is an inevitable danger that the basic operation of the exchange is executed while the contents are being changed. In this way, an inseparable memory change operation such as rewriting of a program or the like (that is, a target memory change operation that should not be used until the change is completed).
When executing the program in the memory change area during the memory change work, if the program has to be divided into multiple command lines due to restrictions on the input of the change command, Is referred to, there is a problem that causes serious troubles such as stop of the switching system (system down), program destruction, and data destruction.

Therefore, the object of the present invention is to:
In a program storage switch that can change memory during operation, there is no need to worry about the use of programs and data in the memory area to be changed during the memory change work, and the memory can be changed without causing a system failure. It is an object of the present invention to provide an electronic exchange system capable of completing a storage content changing operation.

[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, the control unit operates in accordance with various information including various programs stored in the content changeable storage unit, so that information for memory content change processing is stored in the storage unit. When a storage area for storing is provided, and when the control means receives information input from outside to change the memory content of the storage section, the input information is stored in the storage area of the storage section. When a temporary storage function to be performed and externally-input memory content change batch processing command information are received, the memory content change of the storage unit based on the memory content change information stored in the storage area is changed. It has a batch execution function that performs batch execution without causing division.

[0014]

In the above construction, when information for changing the memory contents of the storage section is received from the outside, the control means stores the input information in the storage area of the storage section, Upon receiving the memory content change batch processing command information, the memory content of the storage unit is changed based on the memory content change information stored in the storage area in a batch without causing a change in the change process.

As described above, even when an inseparable memory change operation is described by a plurality of memory change instructions, it is executed at once without rejecting an interrupt of another program, and then re-executed. It is possible to prevent the contents being rewritten from being used by other programs, and to prevent the system from going down.
An electronic exchange system having a highly reliable memory content change processing function can be provided.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One 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 one embodiment of the present invention.

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

Reference numeral 12 denotes a storage unit. The storage unit 12 comprises a ROM (Read Only Memory) or a RAM (Random Access Memory). Used for The control program and data are stored in RAM, and the initialization program and initial program loader are stored in ROM so that it can respond to changes in control contents and service functions. Loads a program or data from the outside by a data reading function by an initial program loader.

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

The extension telephones are connected to the communication line switch 10 via the corresponding line circuits 20a to 20n. 13 is a signal generator for generating various tone signals, 1
Reference numeral 4 denotes 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 denotes a reception board. 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 communication path switch 10 is controlled by the central control unit 11, and uses the time slots allocated by time division to exchange signals such as voices and the like between each office line, each extension and each extension. Is performed, a switching operation is performed, and a communication path is secured to enable communication. The central control unit 11 exchanges information with various services and maintenance terminals 14 such as exchange control, designated time call registration control from the extension telephone, designated time call execution control, and read / write control for the storage unit 12. And a function of performing various controls.

Reference numerals 31a to 31n denote trunk circuits for interfacing with office lines (external lines) accommodated in the communication line switch 10. The trunk circuits 31a to 31n are provided with direct currents for transmitting and receiving to and from the office lines. Can be detected.

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

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

In the case of the present system, the memory change command group is stored in a specially allocated area in the RAM area of the storage unit 12. This area is a memory change instruction storage area 41, and one or more memory change instructions 42 can be stored in the memory change instruction storage area 41, and this area is not used at all by other programs. It is like that.

The memory change command 43 is a command group for providing 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, a memory change instruction batch execution command 48, and the like.

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

The memory change instruction correction command 46 is for correcting the memory change instruction 42 stored in the memory change instruction storage area 41, and the memory change deletion command 47 is for correcting a plurality of memory change instructions stored in the memory change instruction storage area 41. Of the memory change instruction is deleted.

The memory change instruction batch execution command 48 is for sequentially executing some or all of a plurality of memory change instructions stored in the memory change instruction storage area 41.
The execution of the instruction is performed within an indivisible time, and other programs cannot be executed during that time. In other words, 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 receiving the memory change command from the maintenance terminal 14 or the external large-capacity storage device 17, the memory change processing program stores the command in the memory change command storage area 41 and stores the command in the memory change command storage area 41. When receiving the memory change command batch execution command 48 given from the capacity storage device 17, all or a specified part of the content stored in the memory change command storage area 41 is continuously executed, and A process of changing or deleting the contents of the RAM according to this command is performed.

Until all the commands to be executed have been executed, the contents of the processing program are set so as not to interrupt other programs.

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

FIG. 4 is a flowchart showing a procedure for performing an inseparable memory change operation. To explain according to this flowchart, first, one or more memory change instruction commands and a memory change instruction describing data are input to the contents of the memory change operation (S1). During the input operation, addition, correction, and deletion of a memory change instruction can be performed (S3). When the input operation is completed (S2), a batch execution of the memory change instruction is performed, and the operation is completed (S4).

FIG. 5 is a diagram showing the relationship between the input operation of the memory change instruction and the program executed under the management of the operating system (OS).
Shows a conventional system, and FIG. 5B shows a system of the present invention.

As shown in FIG. 5 (a), assuming that a memory change command for one row is input at timings t51, t54 and t55 in the related art, the memory change command for one row is input. Each time a memory change command is invoked. Then, for the memory change instruction for one row input at the timing t51, the timing t5
At the time interval given in 2, the processing of the input and the execution of the memory change instruction are performed, during which 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, a period until the next memory change instruction is input (at timing t5)
4) There is a significant time interval (timing t53), during which the OS activates another program.

The command thus input is executed one line at a time, and is used for execution of another program until the next command is input. The memory change instruction at timing t51 and the memory change instruction at timing t54 are executed. Is inseparable, that is, when it is necessary to execute the memory change instruction received at timing t51 and the memory change instruction received at 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 is completed, the contents of the memory are incomplete, and contradictions occur in the memory during the time interval at the timing t53 when another program is executed in this state. That is, if the program executed during the time interval at the 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 instruction input command is input (t
61), in response to this command, the memory change processing program is started 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 of the RAM area in the storage unit 12.

In the method of the present invention, even if the storage is completed, the execution of the command is not started. Then, there is a significant time interval before the next memory change command input command 64 is input (t63), during which the OS executes another program.

Unlike the conventional method, timings t61, t61
The memory change command input command input at 64 is only stored in the memory change command storage area 41. Here, since the memory change instruction storage area 41 is a special area that is distinguished from the program area and the data area referred to for execution by the program, the memory change of the RAM area in the storage unit 12 is not performed at the time interval at the timing t63. There is no inconsistency in the memory in the target area yet.

After a series of memory change instructions 42 are stored in the memory change instruction storage area 41 in the RAM area of the storage unit 12, after a memory change instruction batch execution command is input (t65), the memory change command is again input. It is executed and executes a plurality of designated memory change instructions during a time interval at timing t66. That is, according to the contents stored in the memory change instruction storage area 41, the contents of the memory change target are changed at once at this point. In the period of the time interval starting from the timing t66, the OS
Thus, 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. A series of memory change instructions 42 describing inseparable memory change operations are input by the memory change instruction addition command 45, and are sequentially stored in the memory change instruction storage area 41. At this time, the memory change instruction display command 44
The display of the already input memory change command 42, the correction by the memory change command correction command 46, and the deletion by the memory change command deletion command 47 can be performed at any time.

Thus, a series of memory change instructions 4
When 2 is stored in the memory change instruction storage area 41, a memory change instruction batch execution command 48 is input, and all or a part of the memory change instruction stored in the memory change instruction storage area 41 is executed.

The memory change instruction batch execution command 48 has a function of executing a plurality of designated memory change instructions within one indivisible time interval. Therefore, no other program is activated and executed while the specified plurality of memory change instructions 42 are being executed. In general, software of a normal private branch exchange system is capable of performing such indivisible processing.

The present system having such a configuration is usually
Under the management of S, a program required for an exchange operation, such as a call control program and an operation program, is executed to operate as an exchange.

Here, when it becomes necessary to correct a bug in a call control program or an operation program, add a part of the processing contents, or change data necessary for performing various service functions of the exchange. For example, the user operates the keyboard of the maintenance terminal 14 to input a command or data required for the change.

Then, the central control unit 11 receives information based on this operation from the maintenance terminal 14, and executes the memory change processing program. The execution of this program is, for example,
In the case of operating the keyboard of the maintenance terminal 14, the process starts from a process of receiving one command line input from the maintenance terminal 14, and until the reception is completed, the interval between the execution of the call control program, the operation program, and the like is interrupted. Done.

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

In this storage, the memory change instruction stored in the storage area can be freely edited by using a memory change operation command such as a memory change instruction execution command, an addition command, a deletion command, and a correction command. It is possible.

When the memory change command batch execution command 48 is received from the maintenance terminal 14, all or a specified portion of the contents stored in the memory change command storage area 41 are continuously executed, and stored. RAM in unit 12
The memory contents are changed or deleted according to this command.

As described above, after storing the memory change instruction in the storage area, by inputting a batch execution instruction, the memory change instructions stored in the storage area are sequentially executed, and during this time, other instructions are executed. To complete the inseparable memory change work at once.

Therefore, according to the present invention, these operations are performed in the order shown in FIG. 5, and the contents of the memory area which needs to be changed can be changed at once 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 memory contents being changed being used by another program.

As described above, in this system, in the electronic exchange system operating as an exchange, the control means operates in accordance with various information including various programs stored in the storage unit whose contents can be changed. When a storage area for storing information for content change processing is provided, and when the control means receives information input from outside to change the memory content of the storage unit, the input information is stored in the storage unit. Upon receiving a temporary storage function for storing in the storage area of the storage unit and change batch processing instruction information of the memory content input from the outside, the storage unit of the storage unit based on the change information of the memory content stored in the storage area It is provided with a batch execution function for executing the change of the memory contents collectively without causing a change in the change processing.

In such a configuration, when information for changing the memory contents of the storage unit is received from outside, the control unit stores the input information in the storage area of the storage unit. Upon receiving the memory content change batch processing command information 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 causing a change in the change process. carry out.

As described above, the present apparatus has a readable / writable memory (storage unit), employs a program storage method in which a program is stored in this memory and operates, and is provided from an external device such as an attached maintenance terminal. In an exchange in which a part of a program or data in the memory can be changed, this instruction is not immediately executed every time a memory change instruction is received from the outside but is sequentially stored in a memory change instruction storage area in the memory. The memory change instruction stored in the memory change instruction storage area is stored in the memory change instruction storage area by a batch execution instruction of the memory change instruction. It is characterized by performing.

Therefore, according to the present system, an indivisible memory change operation described by a plurality of memory change instructions can be performed safely without any influence on the system. The work can be performed with reliability without causing a system down or the like.

The present invention is not limited to the embodiment described above and shown in the drawings, but can be appropriately modified and implemented without departing from the scope of the invention. As a method of storing data in the instruction storage area, the data may not be input from the maintenance terminal, but may be input from an external mass storage device such as a floppy disk device and stored. In addition, the maintenance terminal operation may be executed by reading an instruction from an external mass storage device as a batch process.

[0057]

As described above, according to the present invention,
In a program storage switch that can change memory during operation, there is no need to worry about the use of programs and data in the memory area to be changed during the memory change work, and the memory can be changed without causing a system failure. An electronic exchange system capable of completing a storage content change operation can be provided.

[Brief description of the drawings]

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

FIG. 2 shows a configuration of a memory change command group according to the present invention;
FIG. 4 is a diagram conceptually showing a relationship with an area for storing a memory change instruction.

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 very short time intervals t1 in a program storage exchange.

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

FIG. 5 is a diagram showing a relationship between a memory change instruction input operation and a program executed under management of an operating system.

[Explanation of symbols]

10: communication path switch, 11: central control unit, 12: storage unit, 14: maintenance terminal, 17: external mass storage device,
20a to 20n: line circuit, 21a to 21n: extension telephone.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 3/00 H04M 3/16-3/20 H04M 3/38-3/40 H04M 7/00-7 / 16 H04Q 3/54-3/56

Claims (1)

(57) [Claims] 1. An electronic exchange system which operates as an exchange by operating a control unit in accordance with various information including various programs stored in a storage unit whose contents can be changed. A storage area for storing the information of the storage unit, and when the control unit receives information input from outside to change the memory contents of the storage unit, the control unit stores the input information in the storage unit of the storage unit. Upon receiving a temporary storage function for storing data in the area and a batch processing command for changing the memory content input from the outside, the memory content change of the storage unit based on the memory content change information stored in the storage area is performed. An electronic exchange system comprising: a batch execution function for executing the change processing collectively without causing a division.