JPH01202061A - Exchange system - Google Patents

Abstract

PURPOSE:To store a fault history and to effectively utilize the fault history for the succeeding maintenance by setting up an absolute area in which data rewriting is not executed at the time of restoring a program in a RAM and recording fault information in the absolute area at the time of generating a heavy fault. CONSTITUTION:When a fault is generated in an exchange system, a control part 4 recordes its fault information (e.g., a fault position, a fault factor, fault generation time, etc.), in the absolute area 8a of the RAM part 8. Since the absolute area 8a in which data rewriting is not executed even at the time of restoring a program in the RAM 8 storing program data is set up and fault information is recorded in the absolute area 8a at the time of generating a heavy fault, the fault information can be effectively stored. Consequently, the case of the fault is not lost even after the completion of restart processing and can be utilized for the succeeding maintenance or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention (Industrial Field of Application) The present invention operates by storing program data in a RAM, and when a serious failure occurs, data is stored in the RAM from a predetermined recording medium.
The present invention relates to an exchange system that restarts operation by reloading a program on top and executing a recovery process.

(Prior Art) In recent years, switching systems have been increasingly computerized, and the processing functions handled by switching systems are becoming increasingly diverse. Such electronic switching systems are generally configured to operate according to program data stored on RAM. When a failure occurs, information on the failure is recorded on the RAM as a failure history and displayed.

However, when a serious failure occurs, the switching system starts the failure recovery program in the ROM in terms of hardware, reloads the program from a predetermined recording medium such as a hard disk onto the RAM, and stores the reloaded program.
The restart operation is performed according to the data. For this reason, there are five problems when the failure history recorded on the RAM is initialized by the restart process activated by the occurrence of the above-mentioned serious failure and is lost.

(Problems to be Solved by the Invention) As described above, in the conventional electronic switching system, since the RAM is initialized by the restart process when a serious failure occurs,
There has been a problem that the failure history recorded in the RAM is lost, making it impossible to use the failure history for subsequent maintenance or the like.

The present invention was made in consideration of these circumstances, and its purpose is to protect the RAM even in the event of a serious failure.
It is an object of the present invention to provide a switching system in which the recorded failure history can be saved and used effectively for subsequent maintenance, etc.

[Configuration of the Invention (Means for Solving Problems) The present invention operates by storing program data on a RAM, and when a serious failure occurs, the program is reloaded from a predetermined recording medium onto the RAM. In the switching system that performs recovery processing, an absolute area is set in the RAM in which data will not be rewritten even when the program is reloaded in the event of a serious failure, and an absolute area is set in this absolute area. In addition to recording the fault information at the time of fault occurrence, the fault information written in this absolute area is recorded and saved as a fault history in a predetermined recording medium, and then, for example, the RA
This is characterized in that the absolute area is initialized after the program is re-introduced onto M.

(Operation) According to the present invention, the RA in which program data is stored
An absolute area is set on M where data will not be rewritten even if the program is restarted, and fault information when a serious fault occurs is recorded in this absolute area, so this fault information can be effectively saved. can. As a result, even after the restart process is completed, the cause of the failure will not be lost.
It becomes possible to use it for subsequent maintenance, etc.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram of an exchange system according to an embodiment of the present invention, in which 1 is an electronic exchange main body, 2a, 2b.

2n are a plurality of telephone terminals connected to the terminal control section 3 of the electronic exchange main body 1. In addition to the plurality of telephone terminals 2a, 2b, to 2n described above, outside lines and the like are connected to the electronic exchange main body 1.

The control section 4 of the exchange main body 1 is equipped with a memory 5, and executes the exchange operation according to the program data stored in the RAM section of the memory 5. In addition, 6
supplies predetermined program data to the memory 5,
It is also a recording medium such as a hard disk or a floppy disk that stores and saves predetermined data.

Here, the memory 5 includes a ROM section 7 that permanently stores a failure recovery program, etc., and a rewritable RAM.
This RAM section 8 is further divided into an absolute area l.
1la, a program section 8b, and a data section 8c. This program section 81) has the recording medium 6
The operation control program is loaded from the data section 8.
c is designed to store various data (such as status information of the telephone terminal) necessary for the exchange operation. The terminal control section 3 controls the plurality of telephone terminals 2a, 2b, -2 described above according to the program data stored in the RA k1 section 8.
Executes exchange (line connection) control, etc. between n.

When a fault occurs in the exchange system, the control section 4 records the fault information (for example, the location of the fault, the cause of the fault, the time of occurrence of the fault, etc.) in the absolute area 8a. In addition, if a particularly serious failure occurs, the control unit 4
According to the failure recovery program stored in the ROM unit 5, predetermined program data is read from the recording medium 6 using hardware, and the program unit 8b of the RAM unit 8.

and is re-entered into the data section 8c. By reloading this program and data, the RAM section 8 is initialized.
Failure recovery is now underway.

The above-mentioned absolute area 8a is a prefix whose recorded data is not rewritten even when the program data is reloaded from the recording medium 6 when this serious failure occurs. It is set as an area. By recording the above-mentioned failure information in such absolute area 8a, the failure information is recorded and saved even when the program data is re-inputted into the RAM section 8.

FIG. 2 shows the flow of the serious fault recovery processing procedure in this switching system, and this processing procedure is activated upon detecting the occurrence of a serious fault (step a). When the occurrence of a serious fault is detected, information about the serious fault is written into the absolute area 8a (step b). after that,
IPL is started according to the failure recovery program stored in the ROM section 7, and the program and data are reloaded from the storage medium 6 to the RAM section 8 (step C).
). When the completion of re-inputting the program data into the RAM section 8 is detected (step d), the next process is to read out the serious failure information written in the absolute area 8a as a continuation of the process (step e), This is displayed as a failure message on a predetermined display device (for example, a display or a printer) (step f).

After that, in step g), the two consecutive pieces of serious fault information are recorded and saved as a fault history in the recording medium 6, etc., and the absolute area 8a is brightened to prepare for recording the next serious fault information (step h). . After carrying out the above processing procedure, the exchange returns to its normal control operation according to the program data re-loaded into the RAM section 8 (step i).

According to this system configured in this manner, an absolute area 8a is set in the RAM section 8, which is the memory area of the control section 4, and failure information is recorded in this absolute area 8a. , when a serious failure occurs, the RAM section 8
Even if the program/data is reintroduced to the system, the above failure information will not be lost. As a result, it becomes possible to improve serviceability by effectively storing fault information and effectively using it for subsequent maintenance and the like.

Furthermore, the above-mentioned setting of the absolute area 8a in the RAM section 8 can be achieved by dividing the addresses in the memory space and limiting the address space that the control section 4 can access during exchange operations and failure recovery, which facilitates address management. There are also effects such as being able to save failure information under the following conditions.

Note that the present invention is not limited to the embodiments described above, and can be implemented with various modifications without departing from the gist thereof.

[Effects of the Invention] As explained above, according to the present invention, even when a serious fault occurs and the program data is reinserted into the RAM to recover from the fault, the fault information recorded in the RAM can be used. Since the fault information can be stored, maintenance work based on the fault information can be facilitated and serviceability can be improved, which has great practical effects.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an exchange system according to an embodiment of the present invention, and FIG. 2 is a diagram showing the flow of recovery processing procedures when a serious failure occurs in the embodiment system. ■...Electronic exchange main body, 2a, 2b, ~20...
telephone terminal, 3... terminal control section, 4... control section, 5.
...Memory, 6..Storage medium, 7..ROM section, ..RAM section, 8a..Absolute area. Applicant's agent Patent attorney Takehiko Suzue

Claims (3)

[Claims] (1) In a switching system that operates by storing programs and data on a RAM, and when a serious failure occurs, the program is reloaded from a predetermined recording medium to the RAM to execute recovery processing, wherein the program is stored on the RAM. A switching system characterized in that an absolute area is set in which data will not be rewritten when the switch is re-introduced, and fault information in the event of a serious fault is recorded in this absolute area. (2) The absolute area is initialized after the failure information written in this absolute area at the time of occurrence of a serious failure is recorded and saved as a failure history.Claim 1
Switching system described in Section. (3) Recording and storage of failure information written in the absolute area is
3. The switching system according to claim 2, wherein when the program is reloaded onto the RAM, the fault history is transferred and written to a predetermined recording medium.